11 years agolibata: make reset related methods proper port operations
Tejun Heo [Tue, 25 Mar 2008 03:22:50 +0000]
libata: make reset related methods proper port operations

Currently reset methods are not specified directly in the
ata_port_operations table.  If a LLD wants to use custom reset
methods, it should construct and use a error_handler which uses those
reset methods.  It's done this way for two reasons.

First, the ops table already contained too many methods and adding
four more of them would noticeably increase the amount of necessary
boilerplate code all over low level drivers.

Second, as ->error_handler uses those reset methods, it can get
confusing.  ie. By overriding ->error_handler, those reset ops can be
made useless making layering a bit hazy.

Now that ops table uses inheritance, the first problem doesn't exist
anymore.  The second isn't completely solved but is relieved by
providing default values - most drivers can just override what it has
implemented and don't have to concern itself about higher level
callbacks.  In fact, there currently is no driver which actually
modifies error handling behavior.  Drivers which override
->error_handler just wraps the standard error handler only to prepare
the controller for EH.  I don't think making ops layering strict has
any noticeable benefit.

This patch makes ->prereset, ->softreset, ->hardreset, ->postreset and
their PMP counterparts propoer ops.  Default ops are provided in the
base ops tables and drivers are converted to override individual reset
methods instead of creating custom error_handler.

* ata_std_error_handler() doesn't use sata_std_hardreset() if SCRs
  aren't accessible.  sata_promise doesn't need to use separate
  error_handlers for PATA and SATA anymore.

* softreset is broken for sata_inic162x and sata_sx4.  As libata now
  always prefers hardreset, this doesn't really matter but the ops are
  forced to NULL using ATA_OP_NULL for documentation purpose.

* pata_hpt374 needs to use different prereset for the first and second
  PCI functions.  This used to be done by branching from
  hpt374_error_handler().  The proper way to do this is to use
  separate ops and port_info tables for each function.  Converted.

Signed-off-by: Tejun Heo <htejun@gmail.com>

11 years agolibata: kill port_info->sht and ->irq_handler
Tejun Heo [Tue, 25 Mar 2008 03:22:49 +0000]
libata: kill port_info->sht and ->irq_handler

libata core layer doesn't care about sht or ->irq_handler.  Those are
only of interest to the LLD during initialization.  This is confusing
and has caused several drivers to have duplicate unused initializers
for these fields.

Currently only sata_nv uses these fields.  Make sata_nv use
->private_data, which is supposed to carry LLD-specific information,
instead and kill ->sht and ->irq_handler.  nv_pi_priv structure is
defined and struct literals are used to initialize private_data.
Notational overhead is negligible.

Signed-off-by: Tejun Heo <htejun@gmail.com>

11 years agolibata: stop overloading port_info->private_data
Tejun Heo [Tue, 25 Mar 2008 03:22:49 +0000]
libata: stop overloading port_info->private_data

port_info->private_data is currently used for two purposes - to record
private data about the port_info or to specify host->private_data to
use when allocating ata_host.

This overloading is confusing and counter-intuitive in that
port_info->private_data becomes host->private_data instead of
port->private_data.  In addition, port_info and host don't correspond
to each other 1-to-1.  Currently, the first non-NULL
port_info->private_data is used.

This patch makes port_info->private_data just be what it is -
private_data for the port_info where LLD can jot down extra info.
libata no longer sets host->private_data to the first non-NULL
port_info->private_data, @host_priv argument is added to
ata_pci_init_one() instead.  LLDs which use ata_pci_init_one() can use
this argument to pass in pointer to host private data.  LLDs which
don't should use init-register model anyway and can initialize
host->private_data directly.

Adding @host_priv instead of using init-register model for LLDs which
use ata_pci_init_one() is suggested by Alan Cox.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>

11 years agolibata: make ata_pci_init_one() not use ops->irq_handler and pi->sht
Tejun Heo [Tue, 25 Mar 2008 03:22:49 +0000]
libata: make ata_pci_init_one() not use ops->irq_handler and pi->sht

ata_pci_init_one() is the only function which uses ops->irq_handler
and pi->sht.  Other initialization functions take the same information
as arguments.  This causes confusion and duplicate unused entries in
structures.

Make ata_pci_init_one() take sht as an argument and use ata_interrupt
implicitly.  All current users use ata_interrupt and if different irq
handler is necessary open coding ata_pci_init_one() using
ata_prepare_sff_host() and ata_activate_sff_host can be done under ten
lines including error handling and driver which requires custom
interrupt handler is likely to require custom initialization anyway.

As ata_pci_init_one() was the last user of ops->irq_handler, this
patch also kills the field.

Signed-off-by: Tejun Heo <htejun@gmail.com>

11 years agolibata: implement and use ops inheritance
Tejun Heo [Tue, 25 Mar 2008 03:22:49 +0000]
libata: implement and use ops inheritance

libata lets low level drivers build ata_port_operations table and
register it with libata core layer.  This allows low level drivers
high level of flexibility but also burdens them with lots of
boilerplate entries.

This becomes worse for drivers which support related similar
controllers which differ slightly.  They share most of the operations
except for a few.  However, the driver still needs to list all
operations for each variant.  This results in large number of
duplicate entries, which is not only inefficient but also error-prone
as it becomes very difficult to tell what the actual differences are.

This duplicate boilerplates all over the low level drivers also make
updating the core layer exteremely difficult and error-prone.  When
compounded with multi-branched development model, it ends up
accumulating inconsistencies over time.  Some of those inconsistencies
cause immediate problems and fixed.  Others just remain there dormant
making maintenance increasingly difficult.

To rectify the problem, this patch implements ata_port_operations
inheritance.  To allow LLDs to easily re-use their own ops tables
overriding only specific methods, this patch implements poor man's
class inheritance.  An ops table has ->inherits field which can be set
to any ops table as long as it doesn't create a loop.  When the host
is started, the inheritance chain is followed and any operation which
isn't specified is taken from the nearest ancestor which has it
specified.  This operation is called finalization and done only once
per an ops table and the LLD doesn't have to do anything special about
it other than making the ops table non-const such that libata can
update it.

libata provides four base ops tables lower drivers can inherit from -
base, sata, pmp, sff and bmdma.  To avoid overriding these ops
accidentaly, these ops are declared const and LLDs should always
inherit these instead of using them directly.

After finalization, all the ops table are identical before and after
the patch except for setting .irq_handler to ata_interrupt in drivers
which didn't use to.  The .irq_handler doesn't have any actual effect
and the field will soon be removed by later patch.

* sata_sx4 is still using old style EH and currently doesn't take
  advantage of ops inheritance.

Signed-off-by: Tejun Heo <htejun@gmail.com>

11 years agolibata: implement and use SHT initializers
Tejun Heo [Tue, 25 Mar 2008 03:22:49 +0000]
libata: implement and use SHT initializers

libata lets low level drivers build scsi_host_template and register it
to the SCSI layer.  This allows low level drivers high level of
flexibility but also burdens them with lots of boilerplate entries.

This patch implements SHT initializers which can be used to initialize
all the boilerplate entries in a sht.  Three variants of them are
implemented - BASE, BMDMA and NCQ - for different types of drivers.
Note that entries can be overriden by putting individual initializers
after the helper macro.

All sht tables are identical before and after this patch.

Signed-off-by: Tejun Heo <htejun@gmail.com>

11 years agolibata: normalize port_info, port_operations and sht tables
Tejun Heo [Tue, 25 Mar 2008 03:22:48 +0000]
libata: normalize port_info, port_operations and sht tables

Over the time, port info, ops and sht structures developed quite a bit
of inconsistencies.  This patch updates drivers.

* Enable/disable_pm callbacks added to all ahci ops tables.

* Every driver for SFF controllers now uses ata_sff_port_start()
  instead of ata_port_start() unless the driver has custom
  implementation.

* Every driver for SFF controllers now uses ata_pci_default_filter()
  unless the driver has custom implementation.

* Removed an odd port_info->sht initialization from ata_piix.c.
  Likely a merge byproduct.

* A port which has ATA_FLAG_SATA set doesn't need to set cable_detect
  to ata_cable_sata().  Remove it from via and mv port ops.

* Some drivers had unnecessary .max_sectors initialization which is
  ignored and was missing .slave_destroy callback.  Fixed.

* Removed unnecessary sht initializations port_info's.

* Removed onsolete scsi device suspend/resume callbacks from
  pata_bf54x.

* No reason to set ata_pci_default_filter() and bmdma functions for
  PIO-only drivers.  Remove those callbacks and replace
  ata_bmdma_irq_clear with ata_noop_irq_clear.

* pata_platform sets port_start to ata_dummy_ret0.  port_start can
  just be set to NULL.

* sata_fsl supports NCQ but was missing qc_defer.  Fixed.

* pata_rb600_cf implements dummy port_start.  Removed.

Signed-off-by: Tejun Heo <htejun@gmail.com>

11 years agolibata: implement and use ata_noop_irq_clear()
Tejun Heo [Tue, 25 Mar 2008 03:22:47 +0000]
libata: implement and use ata_noop_irq_clear()

->irq_clear() is used to clear IRQ bit of a SFF controller and isn't
useful for drivers which don't use libata SFF HSM implementation.
However, it's a required callback and many drivers implement their own
noop version as placeholder.  This patch implements ata_noop_irq_clear
and use it to replace those custom placeholders.

Also, SFF drivers which don't support BMDMA don't need to use
ata_bmdma_irq_clear().  It becomes noop if BMDMA address isn't
initialized.  Convert them to use ata_noop_irq_clear().

Signed-off-by: Tejun Heo <htejun@gmail.com>

11 years agolibata: reorganize ata_port_operations
Tejun Heo [Tue, 25 Mar 2008 03:22:47 +0000]
libata: reorganize ata_port_operations

Over the time, ops in ata_port_operations has become a bit confusing.
Reorganize.  SFF/BMDMA ops are separated into separate a group as they
will be taken out of ata_port_operations later.

Signed-off-by: Tejun Heo <htejun@gmail.com>

11 years agolibata: PCI device should be powered up before being accessed
Tejun Heo [Tue, 25 Mar 2008 03:22:47 +0000]
libata: PCI device should be powered up before being accessed

PCI device should be powered up or powered up before its PCI regsiters
are accessed.  Although PCI configuration register access is allowed
in D3hot, PCI device is free to reset its status when transiting from
D3hot to D0 causing configuration data to change.

Many libata SFF drivers which use ata_pci_init_one() read and update
configuration registers before calling ata_pci_init_one() which
enables the PCI device.  Also, in resume paths, some drivers access
registers without resuming the PCI device.

This patch adds a call to pcim_enable_device() in init path if
register is accessed before calling ata_pci_init_one() and make resume
paths first resume PCI devices, access PCI configuration regiters then
resume ATA host.

While at it...

* cmd640 was strange in that it set ->resume even when CONFIG_PM is
  not.  This is by-product of minimal build fix.  Updated.

* In cs5530, Don't BUG() on reinit failure.  Just whine and fail
  resume.

Signed-off-by: Tejun Heo <htejun@gmail.com>

11 years agolibata: kill ata_ehi_schedule_probe()
Tejun Heo [Wed, 23 Jan 2008 15:05:14 +0000]
libata: kill ata_ehi_schedule_probe()

ata_ehi_schedule_probe() was created to hide details of link-resuming
reset magic.  Now that all the softreset workarounds are gone,
scheduling probe is very simple - set probe_mask and request RESET.
Kill ata_ehi_schedule_probe() and open code it.  This also increases
consistency as ata_ehi_schedule_probe() couldn't cover individual
device probings so they were open-coded even when the helper existed.

While at it, define ATA_ALL_DEVICES as mask of all possible devices on
a link and always use it when requesting probe on link level for
simplicity and consistency.  Setting extra bits in the probe_mask
doesn't hurt anybody.

Signed-off-by: Tejun Heo <htejun@gmail.com>

11 years agolibata: kill ATA_LFLAG_SKIP_D2H_BSY
Tejun Heo [Wed, 23 Jan 2008 15:05:14 +0000]
libata: kill ATA_LFLAG_SKIP_D2H_BSY

Some controllers can't reliably record the initial D2H FIS after SATA
link is brought online for whatever reason.  Advanced controllers
which don't have traditional TF register based interface often have
this problem as they don't really have the TF registers to update
while the controller and link are being initialized.

SKIP_D2H_BSY works around the problem by skipping the wait for device
readiness before issuing SRST, so for such controllers libata issues
SRST blindly and hopes for the best.

Now that libata defaults to hardreset, this workaround is no longer
necessary.  For controllers which have support for hardreset, SRST is
never issued by itself.  It is only issued as follow-up SRST for
device classification and PMP initialization, so there's no need to
wait for it from prereset.

Kill ATA_LFLAG_SKIP_D2H_BSY.

Signed-off-by: Tejun Heo <htejun@gmail.com>

11 years agolibata: kill ATA_EHI_RESUME_LINK
Tejun Heo [Wed, 23 Jan 2008 15:05:14 +0000]
libata: kill ATA_EHI_RESUME_LINK

ATA_EHI_RESUME_LINK has two functions - promote reset to hardreset if
ATA_LFLAG_HRST_TO_RESUME is set and preventing EH from shortcutting
reset action when probing is requested.  The former is gone now and
the latter can easily be achieved by making EH to perform at least one
reset if reset is requested, which also makes more sense than
depending on RESUME_LINK flag.

As ATA_EHI_RESUME_LINK was the only EHI reset modifier, this also
kills reset modifier handling.

Signed-off-by: Tejun Heo <htejun@gmail.com>

11 years agolibata: kill ATA_LFLAG_HRST_TO_RESUME
Tejun Heo [Wed, 23 Jan 2008 15:05:14 +0000]
libata: kill ATA_LFLAG_HRST_TO_RESUME

Now that hardreset is the preferred method of resetting, there's no
need for ATA_LFLAG_HRST_TO_RESUME flag.  Kill it.

Signed-off-by: Tejun Heo <htejun@gmail.com>

11 years agolibata: prefer hardreset
Tejun Heo [Wed, 23 Jan 2008 15:05:14 +0000]
libata: prefer hardreset

When both soft and hard resets are available, libata preferred
softreset till now.  The logic behind it was to be softer to devices;
however, this doesn't really help much.  Rationales for the change:

* BIOS may freeze lock certain things during boot and softreset can't
  unlock those.  This by itself is okay but during operation PHY event
  or other error conditions can trigger hardreset and the device may
  end up with different configuration.

  For example, after a hardreset, previously unlockable HPA can be
  unlocked resulting in different device size and thus revalidation
  failure.  Similar condition can occur during or after resume.

* Certain ATAPI devices require hardreset to recover after certain
  error conditions.  On PATA, this is done by issuing the DEVICE RESET
  command.  On SATA, COMRESET has equivalent effect.  The problem is
  that DEVICE RESET needs its own execution protocol.

  For SFF controllers with bare TF access, it can be easily
  implemented but more advanced controllers (e.g. ahci and sata_sil24)
  require specialized implementations.  Simply using hardreset solves
  the problem nicely.

* COMRESET initialization sequence is the norm in SATA land and many
  SATA devices don't work properly if only SRST is used.  For example,
  some PMPs behave this way and libata works around by always issuing
  hardreset if the host supports PMP.

  Like the above example, libata has developed a number of mechanisms
  aiming to promote softreset to hardreset if softreset is not going
  to work.  This approach is time consuming and error prone.

  Also, note that, dependingon how you read the specs, it could be
  argued that PMP fan-out ports require COMRESET to start operation.
  In fact, all the PMPs on the market except one don't work properly
  if COMRESET is not issued to fan-out ports after PMP reset.

* COMRESET is an integral part of SATA connection and any working
  device should be able to handle COMRESET properly.  After all, it's
  the way to signal hardreset during reboot.  This is the most used
  and recommended (at least by the ahci spec) method of resetting
  devices.

So, this patch makes libata prefer hardreset over softreset by making
the following changes.

* Rename ATA_EH_RESET_MASK to ATA_EH_RESET and use it whereever
  ATA_EH_{SOFT|HARD}RESET used to be used.  ATA_EH_{SOFT|HARD}RESET is
  now only used to tell prereset whether soft or hard reset will be
  issued.

* Strip out now unneeded promote-to-hardreset logics from
  ata_eh_reset(), ata_std_prereset(), sata_pmp_std_prereset() and
  other places.

Signed-off-by: Tejun Heo <htejun@gmail.com>

11 years agoLinux 2.6.25
Linus Torvalds [Thu, 17 Apr 2008 02:49:44 +0000]
Linux 2.6.25

11 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6
Linus Torvalds [Thu, 17 Apr 2008 01:58:37 +0000]
Merge git://git./linux/kernel/git/bart/ide-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6:
  it821x: do not describe noraid parameter with its value
  Pb1200/DBAu1200: fix bad IDE resource size
  Au1200: IDE driver build fix
  Au1200: kill IDE driver function prototypes
  avr32 mustn't select HAVE_IDE

11 years agoit821x: do not describe noraid parameter with its value
Paul Bolle [Wed, 16 Apr 2008 23:14:33 +0000]
it821x: do not describe noraid parameter with its value

Describe noraid parameter with its name (and not its value).

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

11 years agoPb1200/DBAu1200: fix bad IDE resource size
Sergei Shtylyov [Wed, 16 Apr 2008 23:14:33 +0000]
Pb1200/DBAu1200: fix bad IDE resource size

The header files for the Pb1200/DBAu1200 boards have wrong definition for the
IDE interface's decoded range length -- it should be 512 bytes according to
what the IDE driver does.  In addition, the IDE platform device claims 1 byte
too many for its memory resource -- fix the platform code and the IDE driver
in accordance.

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

11 years agoAu1200: IDE driver build fix
Sergei Shtylyov [Wed, 16 Apr 2008 23:14:33 +0000]
Au1200: IDE driver build fix

The driver fails to compile with CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA enabled:

drivers/ide/mips/au1xxx-ide.c: In function `auide_build_dmatable':
drivers/ide/mips/au1xxx-ide.c:256: error: implicit declaration of function
`sg_virt'
drivers/ide/mips/au1xxx-ide.c:275: error: implicit declaration of function
`sg_next'
drivers/ide/mips/au1xxx-ide.c:275: warning: assignment makes pointer from
integer without a cast

Fix this by including <linux/scatterlist.h>. While at it, remove the #include's
without which the driver happily builds.

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

11 years agoAu1200: kill IDE driver function prototypes
Sergei Shtylyov [Wed, 16 Apr 2008 23:14:33 +0000]
Au1200: kill IDE driver function prototypes

Fix these warnings emitted when compiling drivers/ide/mips/au1xxx-ide.c:

include/asm/mach-au1x00/au1xxx_ide.h:137: warning: 'auide_tune_drive' declared
`static' but never defined
include/asm/mach-au1x00/au1xxx_ide.h:138: warning: 'auide_tune_chipset' declared
 `static' but never defined

by wiping out the whole "function prototyping" section from the header file
<asm-mips/mach-au1x00/au1xxx_ide.h> as it mostly declared functions that are
already dead in the IDE driver; move the only useful prototype into the driver.

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

11 years agoavr32 mustn't select HAVE_IDE
Adrian Bunk [Wed, 16 Apr 2008 23:14:32 +0000]
avr32 mustn't select HAVE_IDE

There's a libata based PATA driver for avr32, but no support for
drivers/ide/ on avr32.

This patch fixes the following compile error:

<--  snip  -->

...
CC [M] drivers/ide/ide-cd.o
In file included from /home/bunk/linux/kernel-2.6/git/linux-2.6/drivers/ide/ide-cd.c:37:
/home/bunk/linux/kernel-2.6/git/linux-2.6/include/linux/ide.h:209:21: error: asm/ide.h: No such file or directory
make[3]: *** [drivers/ide/ide-cd.o] Error 1

<--  snip  -->

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Cc: Haavard Skinnemoen <hskinnemoen@atmel.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

11 years agoMerge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
Linus Torvalds [Wed, 16 Apr 2008 14:45:45 +0000]
Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block

* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
  block: update git url for blktrace
  io context: increment task attachment count in ioc_task_link()

11 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6
Linus Torvalds [Wed, 16 Apr 2008 14:45:05 +0000]
Merge git://git./linux/kernel/git/gregkh/usb-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6:
  USB: remove broken usb-serial num_endpoints check
  USB: option: Add new vendor ID and device ID for AMOI HSDPA modem
  USB: support more Huawei data card product IDs
  USB: option.c: add more device IDs
  USB: Obscure Maxon BP3-USB Device Support 16d8:6280 for option driver

11 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
Linus Torvalds [Wed, 16 Apr 2008 14:44:27 +0000]
Merge git://git./linux/kernel/git/davem/net-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
  [TCP]: Add return value indication to tcp_prune_ofo_queue().
  PS3: gelic: fix the oops on the broken IE returned from the hypervisor
  b43legacy: fix DMA mapping leakage
  mac80211: remove message on receiving unexpected unencrypted frames
  Update rt2x00 MAINTAINERS entry
  Add rfkill to MAINTAINERS file
  rfkill: Fix device type check when toggling states
  b43legacy: Fix usage of struct device used for DMAing
  ssb: Fix usage of struct device used for DMAing
  MAINTAINERS: move to generic repository for iwlwifi
  b43legacy: fix initvals loading on bcm4303
  rtl8187: Add missing priv->vif assignments
  netconsole: only set CON_PRINTBUFFER if the user specifies a netconsole
  [CAN]: Update documentation of struct sockaddr_can
  MAINTAINERS: isdn4linux@listserv.isdn4linux.de is subscribers-only
  [TCP]: Fix never pruned tcp out-of-order queue.
  [NET_SCHED] sch_api: fix qdisc_tree_decrease_qlen() loop

11 years agoAFS: Do not describe debug parameters with their value
Paul Bolle [Wed, 16 Apr 2008 10:08:22 +0000]
AFS: Do not describe debug parameters with their value

Describe debug parameters with their names (and not their values).

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

11 years agoUSB: remove broken usb-serial num_endpoints check
Greg Kroah-Hartman [Mon, 14 Apr 2008 21:17:29 +0000]
USB: remove broken usb-serial num_endpoints check

The num_interrupt_in, num_bulk_in, and other checks in the usb-serial
code are just wrong, there are too many different devices out there with
different numbers of endpoints.  We need to just be sticking with the
device ids instead of trying to catch this kind of thing.  It broke too
many different devices.

This fixes a large number of usb-serial devices to get them working
properly again.

Cc: Oliver Neukum <oliver@neukum.org>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

11 years agoUSB: option: Add new vendor ID and device ID for AMOI HSDPA modem
tang kai [Mon, 14 Apr 2008 02:06:35 +0000]
USB: option: Add new vendor ID and device ID for AMOI HSDPA modem

This patch add new vendor ID and device ID  for AMOI HSDPA modem.

From: tang kai <tangk73@hotmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

11 years agoUSB: support more Huawei data card product IDs
fangxiaozhi [Thu, 10 Apr 2008 06:51:06 +0000]
USB: support more Huawei data card product IDs

 - declare the unusal device for Huawei data card devices in
   unusual_devs.h
 - disable the product ID matching for Huawei data card devices in
   usb_match_device function of driver.c
 - declare the product IDs in option.c.

Signed-off-by: fangxiaozhi <huananhu@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

11 years agoUSB: option.c: add more device IDs
Matthias Urlichs [Thu, 10 Apr 2008 08:13:32 +0000]
USB: option.c: add more device IDs

Add devices by AMOI and NovatelWireless.

Signed-Off-By: Matthias Urlichs <matthias@urlichs.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

11 years agoUSB: Obscure Maxon BP3-USB Device Support 16d8:6280 for option driver
James Cameron [Wed, 9 Apr 2008 08:59:13 +0000]
USB: Obscure Maxon BP3-USB Device Support 16d8:6280 for option driver

The modem was detected, the ttyUSB{0,1,2} appeared, a call could be
made, and the expected data rate was achieved.  Tested for an hour or
two, total of 100Mb.  I shall do more testing.

Signed-off-by: James Cameron <quozl@laptop.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

11 years ago[TCP]: Add return value indication to tcp_prune_ofo_queue().
Vitaliy Gusev [Wed, 16 Apr 2008 03:26:34 +0000]
[TCP]: Add return value indication to tcp_prune_ofo_queue().

Returns non-zero if tp->out_of_order_queue was seen non-empty.
This allows tcp_try_rmem_schedule() to return early.

Signed-off-by: Vitaliy Gusev <vgusev@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

11 years agoacpi: unneccessary to scan the PCI bus already scanned
yakui.zhao@intel.com [Tue, 15 Apr 2008 21:34:49 +0000]
acpi: unneccessary to scan the PCI bus already scanned

http://bugzilla.kernel.org/show_bug.cgi?id=10124

this change:

      commit 08f1c192c3c32797068bfe97738babb3295bbf42
      Author: Muli Ben-Yehuda <muli@il.ibm.com>
      Date:   Sun Jul 22 00:23:39 2007 +0300

         x86-64: introduce struct pci_sysdata to facilitate sharing of ->sysdata

         This patch introduces struct pci_sysdata to x86 and x86-64, and
         converts the existing two users (NUMA, Calgary) to use it.

         This lays the groundwork for having other users of sysdata, such as
         the PCI domains work.

         The Calgary bits are tested, the NUMA bits just look ok.

replaces pcibios_scan_root by pci_scan_bus_parented...

but in pcibios_scan_root we have a check about scanned busses.

Cc: <yakui.zhao@intel.com>
Cc: Stian Jordet <stian@jordet.net>
Cc: Len Brown <lenb@kernel.org>
Cc: Greg KH <greg@kroah.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: "Yinghai Lu" <yhlu.kernel@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

11 years agoacpi thermal trip points increased to 12
Krzysztof Helt [Tue, 15 Apr 2008 21:34:47 +0000]
acpi thermal trip points increased to 12

The THERMAL_MAX_TRIPS value is set to 10.  It is too few for the Compaq AP550
machine which has 12 trip points.

Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl>
Cc: Len Brown <lenb@kernel.org>
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

11 years agoacpi: bus: check once more for an empty list after locking it
Chuck Ebbert [Tue, 15 Apr 2008 21:34:47 +0000]
acpi: bus: check once more for an empty list after locking it

List could have become empty after the unlocked check that was made earlier,
so check again inside the lock.

Should fix https://bugzilla.redhat.com/show_bug.cgi?id=427765

Signed-off-by: Chuck Ebbert <cebbert@redhat.com>
Cc: <stable@kernel.org>
Cc: Len Brown <lenb@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

11 years agospi: spi_s3c24xx must initialize num_chipselect
Ben Dooks [Tue, 15 Apr 2008 21:34:46 +0000]
spi: spi_s3c24xx must initialize num_chipselect

The SPI core now expects num_chipselect to be set correctly as due to added
checks on the chip being selected before an transfer is allowed.  This patch
adds a num_cs field to the platform data which needs to be set correctly
before adding the SPI platform device.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

11 years agospi: spi_s3c24xx must initialize bus_num
Ben Dooks [Tue, 15 Apr 2008 21:34:45 +0000]
spi: spi_s3c24xx must initialize bus_num

Pass the bus number we expect the S3C24XX SPI driver to attach to via the
platform data.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

11 years agospi: spi_s3c24xx driver must init completion
Ben Dooks [Tue, 15 Apr 2008 21:34:44 +0000]
spi: spi_s3c24xx driver must init completion

The s3c24xx_spi_txrx() function should initialise the completion each time
before using it, otherwise we end up with the possibility of returning success
before the interrupt handler has processed all the data.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

11 years agovfs: fix possible deadlock in ext2, ext3, ext4 when using xattrs
Jan Kara [Tue, 15 Apr 2008 21:34:43 +0000]
vfs: fix possible deadlock in ext2, ext3, ext4 when using xattrs

mb_cache_entry_alloc() was allocating cache entries with GFP_KERNEL.  But
filesystems are calling this function while holding xattr_sem so possible
recursion into the fs violates locking ordering of xattr_sem and transaction
start / i_mutex for ext2-4.  Change mb_cache_entry_alloc() so that filesystems
can specify desired gfp mask and use GFP_NOFS from all of them.

Signed-off-by: Jan Kara <jack@suse.cz>
Reported-by: Dave Jones <davej@redhat.com>
Cc: <linux-ext4@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

11 years agoDocumentation: correct overcommit caveat in hugetlbpage.txt
Nishanth Aravamudan [Tue, 15 Apr 2008 21:34:43 +0000]
Documentation: correct overcommit caveat in hugetlbpage.txt

As shown by Gurudas Pai recently, we can put hugepages into the surplus
state (by echo 0 > /proc/sys/vm/nr_hugepages), even when
/proc/sys/vm/nr_overcommit_hugepages is 0. This is actually correct, to
allow the original goal (shrink the static pool to 0) to succeed (we are
converting hugepages to surplus because they are in use). However, the
documentation does not accurately reflect this case. Update it.

Signed-off-by: Nishanth Aravamudan <nacc@us.ibm.com>
Acked-by: Andy Whitcroft <apw@shadowen.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

11 years agoadd "Isolate" migratetype name to /proc/pagetypeinfo
KOSAKI Motohiro [Tue, 15 Apr 2008 21:34:42 +0000]
add "Isolate" migratetype name to /proc/pagetypeinfo

In a5d76b54a3f3a40385d7f76069a2feac9f1bad63 (memory unplug: page isolation by
KAMEZAWA Hiroyuki), "isolate" migratetype added.  but unfortunately, it
doesn't treat /proc/pagetypeinfo display logic.

this patch add "Isolate" to pagetype name field.

/proc/pagetype
before:
------------------------------------------------------------------------------------------------------------------------
Free pages count per migrate type at order       0      1      2      3      4      5      6      7      8      9     10
Node    0, zone      DMA, type    Unmovable      1      2      2      2      1      2      2      1      1      0      0
Node    0, zone      DMA, type  Reclaimable      0      0      0      0      0      0      0      0      0      0      0
Node    0, zone      DMA, type      Movable      2      3      3      1      3      3      2      0      0      0      0
Node    0, zone      DMA, type      Reserve      0      0      0      0      0      0      0      0      0      0      1
Node    0, zone      DMA, type       <NULL>      0      0      0      0      0      0      0      0      0      0      0
Node    0, zone   Normal, type    Unmovable      1      9      7      4      1      1      1      1      0      0      0
Node    0, zone   Normal, type  Reclaimable      5      2      0      0      1      1      0      0      0      1      0
Node    0, zone   Normal, type      Movable      0      1      1      0      0      0      1      0      0      1     60
Node    0, zone   Normal, type      Reserve      0      0      0      0      0      0      0      0      0      0      1
Node    0, zone   Normal, type       <NULL>      0      0      0      0      0      0      0      0      0      0      0
Node    0, zone  HighMem, type    Unmovable      0      0      1      1      1      0      1      1      2      2      0
Node    0, zone  HighMem, type  Reclaimable      0      0      0      0      0      0      0      0      0      0      0
Node    0, zone  HighMem, type      Movable    236     62      6      2      2      1      1      0      1      1     16
Node    0, zone  HighMem, type      Reserve      0      0      0      0      0      0      0      0      0      0      1
Node    0, zone  HighMem, type       <NULL>      0      0      0      0      0      0      0      0      0      0      0

Number of blocks type     Unmovable  Reclaimable      Movable      Reserve       <NULL>
Node 0, zone      DMA            1            0            2       1            0
Node 0, zone   Normal           10           40          169       1            0
Node 0, zone  HighMem            2            0          283       1            0

after:
------------------------------------------------------------------------------------------------------------------------
Free pages count per migrate type at order       0      1      2      3      4      5      6      7      8      9     10
Node    0, zone      DMA, type    Unmovable      1      2      2      2      1      2      2      1      1      0      0
Node    0, zone      DMA, type  Reclaimable      0      0      0      0      0      0      0      0      0      0      0
Node    0, zone      DMA, type      Movable      2      3      3      1      3      3      2      0      0      0      0
Node    0, zone      DMA, type      Reserve      0      0      0      0      0      0      0      0      0      0      1
Node    0, zone      DMA, type      Isolate      0      0      0      0      0      0      0      0      0      0      0
Node    0, zone   Normal, type    Unmovable      0      2      1      1      0      1      0      0      0      0      0
Node    0, zone   Normal, type  Reclaimable      1      1      1      1      1      0      1      1      1      0      0
Node    0, zone   Normal, type      Movable      0      1      1      1      0      1      0      1      0      0    196
Node    0, zone   Normal, type      Reserve      0      0      0      0      0      0      0      0      0      0      1
Node    0, zone   Normal, type      Isolate      0      0      0      0      0      0      0      0      0      0      0
Node    0, zone  HighMem, type    Unmovable      0      1      0      0      0      1      1      1      2      2      0
Node    0, zone  HighMem, type  Reclaimable      0      0      0      0      0      0      0      0      0      0      0
Node    0, zone  HighMem, type      Movable      1      0      1      1      0      0      0      0      1      0    200
Node    0, zone  HighMem, type      Reserve      0      0      0      0      0      0      0      0      0      0      1
Node    0, zone  HighMem, type      Isolate      0      0      0      0      0      0      0      0      0      0      0

Number of blocks type     Unmovable  Reclaimable      Movable      Reserve      Isolate
Node 0, zone      DMA            1            0            2       1            0
Node 0, zone   Normal            8            4          207       1            0
Node 0, zone  HighMem            2            0          283       1            0

Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: Mel Gorman <mel@csn.ul.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

11 years agoFix typos in Documentation/filesystems/seq_file.txt
Dmitri Vorobiev [Tue, 15 Apr 2008 21:34:40 +0000]
Fix typos in Documentation/filesystems/seq_file.txt

A couple of typos crept into the newly added document about the seq_file
interface.  This patch corrects those typos and simultaneously deletes
unnecessary trailing spaces.

Signed-off-by: Dmitri Vorobiev <dmitri.vorobiev@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

11 years agouml: compile error fix
WANG Cong [Tue, 15 Apr 2008 21:34:38 +0000]
uml: compile error fix

This patch fixes this error:

In file included from /home/wangcong/projects/linux-2.6/arch/um/kernel/smp.c:9:
include2/asm/tlb.h: In function `tlb_remove_page':
include2/asm/tlb.h:101: error: implicit declaration of function `page_cache_release'

And since including <linux/pagemap.h> in <linux/swap.h> will break sparc,
we add this #include in uml's own header.

Acked-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: WANG Cong <wangcong@zeuux.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

11 years agomemcg: fix oops in oom handling
Li Zefan [Tue, 15 Apr 2008 21:34:37 +0000]
memcg: fix oops in oom handling

When I used a test program to fork mass processes and immediately move them to
a cgroup where the memory limit is low enough to trigger oom kill, I got oops:

BUG: unable to handle kernel NULL pointer dereference at 0000000000000808
IP: [<ffffffff8045c47f>] _spin_lock_irqsave+0x8/0x18
PGD 4c95f067 PUD 4406c067 PMD 0
Oops: 0002 [1] SMP
CPU 2
Modules linked in:

Pid: 11973, comm: a.out Not tainted 2.6.25-rc7 #5
RIP: 0010:[<ffffffff8045c47f>]  [<ffffffff8045c47f>] _spin_lock_irqsave+0x8/0x18
RSP: 0018:ffff8100448c7c30  EFLAGS: 00010002
RAX: 0000000000000202 RBX: 0000000000000009 RCX: 000000000001c9f3
RDX: 0000000000000100 RSI: 0000000000000001 RDI: 0000000000000808
RBP: ffff81007e444080 R08: 0000000000000000 R09: ffff8100448c7900
R10: ffff81000105f480 R11: 00000100ffffffff R12: ffff810067c84140
R13: 0000000000000001 R14: ffff8100441d0018 R15: ffff81007da56200
FS:  00007f70eb1856f0(0000) GS:ffff81007fbad3c0(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 0000000000000808 CR3: 000000004498a000 CR4: 00000000000006e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process a.out (pid: 11973, threadinfo ffff8100448c6000, task ffff81007da533e0)
Stack:  ffffffff8023ef5a 00000000000000d0 ffffffff80548dc0 00000000000000d0
 ffff810067c84140 ffff81007e444080 ffffffff8026cef9 00000000000000d0
 ffff8100441d0000 00000000000000d0 ffff8100441d0000 ffff8100505445c0
Call Trace:
 [<ffffffff8023ef5a>] ? force_sig_info+0x25/0xb9
 [<ffffffff8026cef9>] ? oom_kill_task+0x77/0xe2
 [<ffffffff8026d696>] ? mem_cgroup_out_of_memory+0x55/0x67
 [<ffffffff802910ad>] ? mem_cgroup_charge_common+0xec/0x202
 [<ffffffff8027997b>] ? handle_mm_fault+0x24e/0x77f
 [<ffffffff8022c4af>] ? default_wake_function+0x0/0xe
 [<ffffffff8027a17a>] ? get_user_pages+0x2ce/0x3af
 [<ffffffff80290fee>] ? mem_cgroup_charge_common+0x2d/0x202
 [<ffffffff8027a441>] ? make_pages_present+0x8e/0xa4
 [<ffffffff8027d1ab>] ? mmap_region+0x373/0x429
 [<ffffffff8027d7eb>] ? do_mmap_pgoff+0x2ff/0x364
 [<ffffffff80210471>] ? sys_mmap+0xe5/0x111
 [<ffffffff8020bfc9>] ? tracesys+0xdc/0xe1

Code: 00 00 01 48 8b 3c 24 e9 46 d4 dd ff f0 ff 07 48 8b 3c 24 e9 3a d4 dd ff fe 07 48 8b 3c 24 e9 2f d4 dd ff 9c 58 fa ba 00 01 00 00 <f0> 66 0f c1 17 38 f2 74 06 f3 90 8a 17 eb f6 c3 fa b8 00 01 00
RIP  [<ffffffff8045c47f>] _spin_lock_irqsave+0x8/0x18
 RSP <ffff8100448c7c30>
CR2: 0000000000000808
---[ end trace c3702fa668021ea4 ]---

It's reproducable in a x86_64 box, but doesn't happen in x86_32.

This is because tsk->sighand is not guarded by RCU, so we have to
hold tasklist_lock, just as what out_of_memory() does.

Signed-off-by: Li Zefan <lizf@cn.fujitsu>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: Balbir Singh <balbir@linux.vnet.ibm.com>
Cc: Pavel Emelianov <xemul@openvz.org>
Cc: Paul Menage <menage@google.com>
Cc: Oleg Nesterov <oleg@tv-sign.ru>
Cc: David Rientjes <rientjes@cs.washington.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

11 years agoserial: fix platform driver hotplug/coldplug
Kay Sievers [Tue, 15 Apr 2008 21:34:35 +0000]
serial: fix platform driver hotplug/coldplug

Since 43cc71eed1250755986da4c0f9898f9a635cb3bf, the platform modalias is
prefixed with "platform:".  Add MODULE_ALIAS() to the hotpluggable serial
platform drivers, to re-enable auto loading.

NOTE that Kconfig for some of these drivers doesn't allow modular builds, and
thus doesn't match the driver source's unload support.  Presumably their
unload code is buggy and/or weakly tested...

[dbrownell@users.sourceforge.net: more drivers, registration fixes]
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Acked-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

11 years agopcmcia: fix platform driver hotplug/coldplug
Kay Sievers [Tue, 15 Apr 2008 21:34:34 +0000]
pcmcia: fix platform driver hotplug/coldplug

Since 43cc71eed1250755986da4c0f9898f9a635cb3bf, the platform modalias is
prefixed with "platform:".  Add MODULE_ALIAS() to the hotpluggable PCMCIA
platform drivers, to re-enable auto loading.

[dbrownell@users.sourceforge.net: registration fixes]
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

11 years agomisc: fix platform driver hotplug/coldplug
Kay Sievers [Tue, 15 Apr 2008 21:34:33 +0000]
misc: fix platform driver hotplug/coldplug

Since 43cc71eed1250755986da4c0f9898f9a635cb3bf, the platform modalias is
prefixed with "platform:".  Add MODULE_ALIAS() to the hotpluggable 'misc'
platform drivers, to re-enable auto loading.

[dbrownell@users.sourceforge.net:  bugfix, registration fixes]
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

11 years agofbdev: fix /proc/fb oops after module removal
Alexey Dobriyan [Tue, 15 Apr 2008 21:34:33 +0000]
fbdev: fix /proc/fb oops after module removal

/proc/fb is not removed during rmmod.

Steps to reproduce:

modprobe fb
rmmod fb
ls /proc

BUG: unable to handle kernel paging request at ffffffffa0094370
IP: [<ffffffff802b92a1>] proc_get_inode+0x101/0x130
PGD 203067 PUD 207063 PMD 17e758067 PTE 0
Oops: 0000 [1] SMP
last sysfs file: /sys/devices/pci0000:00/0000:00:1e.0/0000:05:02.0/resource
CPU 1
Modules linked in: nf_conntrack_irc xt_state iptable_filter ipt_MASQUERADE iptable_nat nf_nat nf_conntrack_ipv4 nf_conntrack ip_tables x_tables vfat fat usbhid ehci_hcd uhci_hcd usbcore sr_mod cdrom [last unloaded: fb]
Pid: 21205, comm: ls Not tainted 2.6.25-rc8-mm2 #14
RIP: 0010:[<ffffffff802b92a1>]  [<ffffffff802b92a1>] proc_get_inode+0x101/0x130
RSP: 0018:ffff81017c4bfc78  EFLAGS: 00010246
RAX: 0000000000008000 RBX: ffff8101787f5470 RCX: 0000000048011ccc
RDX: ffffffffa0094320 RSI: ffff810006ad43b0 RDI: ffff81017fc2cc00
RBP: ffff81017e450300 R08: 0000000000000002 R09: ffff81017c5d1000
R10: 0000000000000000 R11: 0000000000000246 R12: ffff81016b903a28
R13: ffff81017f822020 R14: ffff81017c4bfd58 R15: ffff81017f822020
FS:  00007f08e71696f0(0000) GS:ffff81017fc06480(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: ffffffffa0094370 CR3: 000000017e54a000 CR4: 00000000000006e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process ls (pid: 21205, threadinfo ffff81017c4be000, task ffff81017de48770)
Stack:  ffff81017c5d1000 00000000ffffffea ffff81017e450300 ffffffff802bdd1e
 ffff81017f802258 ffff81017c4bfe48 ffff81016b903a28 ffff81017f822020
 ffff81017c4bfd48 ffffffff802b9ba0 ffff81016b903a28 ffff81017f802258
Call Trace:
 [<ffffffff802bdd1e>] ? proc_lookup_de+0x8e/0x100
 [<ffffffff802b9ba0>] ? proc_root_lookup+0x20/0x60
 [<ffffffff802882a7>] ? do_lookup+0x1b7/0x210
 [<ffffffff8028883d>] ? __link_path_walk+0x53d/0x7f0
 [<ffffffff80295eb8>] ? mntput_no_expire+0x28/0x130
 [<ffffffff80288b4a>] ? path_walk+0x5a/0xc0
 [<ffffffff80288dd3>] ? do_path_lookup+0x83/0x1c0
 [<ffffffff80287785>] ? getname+0xe5/0x210
 [<ffffffff80289adb>] ? __user_walk_fd+0x4b/0x80
 [<ffffffff8028236c>] ? vfs_lstat_fd+0x2c/0x70
 [<ffffffff8028bf1e>] ? filldir+0xae/0xf0
 [<ffffffff802b92e9>] ? de_put+0x9/0x50
 [<ffffffff8029633d>] ? mnt_want_write+0x2d/0x80
 [<ffffffff8029339f>] ? touch_atime+0x1f/0x170
 [<ffffffff802b9b1d>] ? proc_root_readdir+0x7d/0xa0
 [<ffffffff802825e7>] ? sys_newlstat+0x27/0x50
 [<ffffffff8028bffb>] ? vfs_readdir+0x9b/0xd0
 [<ffffffff8028c0fe>] ? sys_getdents+0xce/0xe0
 [<ffffffff8020b39b>] ? system_call_after_swapgs+0x7b/0x80

Code: b7 83 b2 00 00 00 25 00 f0 00 00 3d 00 80 00 00 74 19 48 89 93 f0 00 00 00 48 89 df e8 39 9a fd ff 48 89 d8 48 83 c4 08 5b 5d c3 <48> 83 7a 50 00 48 c7 c0 60 16 45 80 48 c7 c2 40 17 45 80 48 0f
RIP  [<ffffffff802b92a1>] proc_get_inode+0x101/0x130
 RSP <ffff81017c4bfc78>
CR2: ffffffffa0094370
---[ end trace c71hiarjan8ab739 ]---

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
"Antonino A. Daplas" <adaplas@pol.net>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

11 years agoleds: fix platform driver hotplug/coldplug
Kay Sievers [Tue, 15 Apr 2008 21:34:30 +0000]
leds: fix platform driver hotplug/coldplug

Since 43cc71eed1250755986da4c0f9898f9a635cb3bf, the platform
modalias is prefixed with "platform:". Add MODULE_ALIAS() to the
hotpluggable platform LED drivers, to re-enable auto loading.

[dbrownell@users.sourceforge.net: more drivers, registration fixes]
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Acked-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

11 years agortc: fix the error in the function of cmos_set_alarm
Zhao Yakui [Tue, 15 Apr 2008 21:34:29 +0000]
rtc: fix the error in the function of cmos_set_alarm

There is a bug in the function of cmos_set_alarm.  RTC alarm time for October
can't be set correctly.

For October: 0x0A will be written into the RTC region (MONTH_ALARM) in current
kernel.  But in fact 0x10 should be written.  Wildcards are also not handled
correctly.

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

11 years agommc: fix platform driver hotplug/coldplug
Kay Sievers [Tue, 15 Apr 2008 21:34:28 +0000]
mmc: fix platform driver hotplug/coldplug

Since 43cc71eed1250755986da4c0f9898f9a635cb3bf, the platform modalias is
prefixed with "platform:".  Add MODULE_ALIAS() to the hotpluggable MMC host
platform drivers, to re-enable auto loading.

Also, add missing owner declarations in driver init.

[dbrownell@users.sourceforge.net: registration fixes]
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Acked-by: Pierre Ossman <drzeus@drzeus.cx>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

11 years agomm: sparsemem memory_present() fix
Ingo Molnar [Tue, 15 Apr 2008 23:40:00 +0000]
mm: sparsemem memory_present() fix

Fix memory corruption and crash on 32-bit x86 systems.

If a !PAE x86 kernel is booted on a 32-bit system with more than 4GB of
RAM, then we call memory_present() with a start/end that goes outside
the scope of MAX_PHYSMEM_BITS.

That causes this loop to happily walk over the limit of the sparse
memory section map:

    for (pfn = start; pfn < end; pfn += PAGES_PER_SECTION) {
                unsigned long section = pfn_to_section_nr(pfn);
                struct mem_section *ms;

                sparse_index_init(section, nid);
                set_section_nid(section, nid);

                ms = __nr_to_section(section);
                if (!ms->section_mem_map)
                        ms->section_mem_map = sparse_encode_early_nid(nid) |
                                SECTION_MARKED_PRESENT;

'ms' will be out of bounds and we'll corrupt a small amount of memory by
encoding the node ID and writing SECTION_MARKED_PRESENT (==0x1) over it.

The corruption might happen when encoding a non-zero node ID, or due to
the SECTION_MARKED_PRESENT which is 0x1:

mmzone.h:#define SECTION_MARKED_PRESENT (1UL<<0)

The fix is to sanity check anything the architecture passes to
sparsemem.

This bug seems to be rather old (as old as sparsemem support itself),
but the exact incarnation depended on random details like configs, which
made this bug more prominent in v2.6.25-to-be.

An additional enhancement might be to print a warning about ignored or
trimmed memory ranges.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Tested-by: Christoph Lameter <clameter@sgi.com>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Nick Piggin <npiggin@suse.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Yinghai Lu <Yinghai.Lu@sun.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

11 years agoMerge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/linville/wireles...
David S. Miller [Wed, 16 Apr 2008 02:15:00 +0000]
Merge branch 'master' of /linux/kernel/git/linville/wireless-2.6

11 years ago[PARISC] fix signal trampoline cache flushing
Kyle McMartin [Tue, 15 Apr 2008 22:36:38 +0000]
[PARISC] fix signal trampoline cache flushing

The signal trampolines were accidently flushing the kernel I$ instead of
the users.  Fix that up, and also add a missing user D$ flush while
we're at it.

Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

11 years agoFix locking bug in "acquire_console_semaphore_for_printk()"
Linus Torvalds [Tue, 15 Apr 2008 20:09:54 +0000]
Fix locking bug in "acquire_console_semaphore_for_printk()"

When I cleaned up printk() and split up the printk locking logic in
commit 266c2e0abeca649fa6667a1a427ad1da507c6375 ("Make printk() console
semaphore accesses sensible") I had incorrectly moved the call to
have_callable_console() outside of the console semaphore.

That was buggy.  The console semaphore protects the console_drivers list
that is used by have_callable_console().

Thanks go to Bongani Hlope who saw this as a hang on shutdown and reboot
and bisected the bug to the right commit, and tested this patch. See

http://lkml.org/lkml/2008/4/11/315

Bisected-and-tested-by: Bongani Hlope <bonganilinux@mweb.co.za>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

11 years agoPS3: gelic: fix the oops on the broken IE returned from the hypervisor
Masakazu Mokuno [Mon, 14 Apr 2008 09:07:21 +0000]
PS3: gelic: fix the oops on the broken IE returned from the hypervisor

This fixes the bug that the driver would try to over-scan the memory
if the sum of the length field of every IEs does not match the length
returned from the hypervisor.

Signed-off-by: Masakazu Mokuno <mokuno@sm.sony.co.jp>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

11 years agob43legacy: fix DMA mapping leakage
Stefano Brivio [Sun, 13 Apr 2008 22:59:49 +0000]
b43legacy: fix DMA mapping leakage

This fixes a DMA mapping leakage in the case where we reject a DMA buffer
because of its address.
The patch by Michael Buesch has been ported to b43legacy.

Signed-off-by: Stefano Brivio <stefano.brivio@polimi.it>
Cc: Christian Casteyde <casteyde.christian@free.fr>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

11 years agomac80211: remove message on receiving unexpected unencrypted frames
Johannes Berg [Sun, 13 Apr 2008 08:12:47 +0000]
mac80211: remove message on receiving unexpected unencrypted frames

Some people are getting this message a lot, and we have traced it to
broken access points that much too often send completely empty frames
(all bytes zeroed, which they shouldn't do at all.)

Since we cannot do anything about such frames in any case except the
special case where we're debugging an AP, just remove the message.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

11 years agoUpdate rt2x00 MAINTAINERS entry
Ivo van Doorn [Sat, 12 Apr 2008 17:25:00 +0000]
Update rt2x00 MAINTAINERS entry

Add the tree entry for rt2x00 to inform people about the
rt2x00.git tree.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

11 years agoAdd rfkill to MAINTAINERS file
Ivo van Doorn [Sat, 12 Apr 2008 17:23:55 +0000]
Add rfkill to MAINTAINERS file

I have been acting as the maintainer since the rfkill introduction,
so lets make it official by adding a rfkill entry in the MAINTAINERS file.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

11 years agorfkill: Fix device type check when toggling states
Carlos Corbacho [Sat, 12 Apr 2008 15:39:47 +0000]
rfkill: Fix device type check when toggling states

rfkill_switch_all() is supposed to only switch all the interfaces of a
given type, but does not actually do this; instead, it just switches
everything currently in the same state.

Add the necessary type check in.

(This fixes a bug I've been seeing while developing an rfkill laptop
driver, with both bluetooth and wireless simultaneously changing state
after only pressing either KEY_WLAN or KEY_BLUETOOTH).

Signed-off-by: Carlos Corbacho <carlos@strangeworlds.co.uk>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

11 years agob43legacy: Fix usage of struct device used for DMAing
Michael Buesch [Fri, 11 Apr 2008 10:16:36 +0000]
b43legacy: Fix usage of struct device used for DMAing

This fixes b43legacy for the SSB DMA API change.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Cc: Stefano Brivio <stefano.brivio@polimi.it>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

11 years agossb: Fix usage of struct device used for DMAing
Michael Buesch [Fri, 11 Apr 2008 09:59:00 +0000]
ssb: Fix usage of struct device used for DMAing

This fixes DMA on architectures where DMA is nontrivial, like PPC64.
We must use the host-device's (PCI) struct device for any DMA
operation instead of the SSB device. For this we add a new
struct device pointer to the SSB device structure that will always
point to the right device for DMAing.

Without this patch b43 and b44 drivers won't work on complex-DMA
architectures, that for example need dev->archdata for DMA operations.

Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

11 years agoMAINTAINERS: move to generic repository for iwlwifi
Reinette Chatre [Thu, 10 Apr 2008 20:16:27 +0000]
MAINTAINERS: move to generic repository for iwlwifi

Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

11 years agob43legacy: fix initvals loading on bcm4303
Stefano Brivio [Sun, 6 Apr 2008 15:10:53 +0000]
b43legacy: fix initvals loading on bcm4303

This allows for the correct initial values to be uploaded to bcm4303
devices. It should be correct, but I can't reliably test this as I suspect
there's something going wrong with an hardware rfkill switch on my laptop.
Please test.

Signed-off-by: Stefano Brivio <stefano.brivio@polimi.it>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

11 years agortl8187: Add missing priv->vif assignments
Herton Ronaldo Krzesinski [Wed, 9 Apr 2008 19:38:31 +0000]
rtl8187: Add missing priv->vif assignments

This adds missing priv->vif assignments after "mac80211: don't use
interface indices in drivers" change. As rtl8180, rtl8187 also needs
priv->vif to be set, as without this an oops can happen in rtl8187_tx
function (priv->vif is passed to ieee80211_rts_duration).

Signed-off-by: Herton Ronaldo Krzesinski <herton@mandriva.com.br>
Acked-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

11 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6.25
Linus Torvalds [Tue, 15 Apr 2008 18:00:05 +0000]
Merge git://git./linux/kernel/git/lethal/sh-2.6.25

* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6.25:
  sh: export empty_zero_page
  sh: arch/sh/kernel/traps_32.c needs asm/fpu.h
  sh: fix compressed kernel build
  sh64: add missing #include <asm/fpu.h>'s

11 years agosh: export empty_zero_page
Andrew Morton [Tue, 15 Apr 2008 17:21:47 +0000]
sh: export empty_zero_page

ERROR: "empty_zero_page" [fs/ext4/ext4dev.ko] undefined!

Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

11 years agosh: arch/sh/kernel/traps_32.c needs asm/fpu.h
Andrew Morton [Tue, 15 Apr 2008 17:03:51 +0000]
sh: arch/sh/kernel/traps_32.c needs asm/fpu.h

arch/sh/kernel/traps_32.c: In function `do_reserved_inst':
arch/sh/kernel/traps_32.c:667: error: implicit declaration of function `do_fpu_inst'

Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

11 years agosh: fix compressed kernel build
Manuel Lauss [Tue, 15 Apr 2008 17:01:55 +0000]
sh: fix compressed kernel build

commit 54a015104136974262afa4b8ddd943ea70dec8a2 broke zImage build on sh arch:

 LD      vmlinux
  SYSMAP  System.map
  SYSMAP  .tmp_System.map
  AS      arch/sh/boot/compressed/head_32.o
In file included from /k/arch/sh/boot/compressed/head_32.S:11:
/k/include/linux/linkage.h:34: error: syntax error in macro parameter list

Fix it for both sh and sh64.

Signed-off-by: Manuel Lauss <mano@roarinelk.homelinux.net>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

11 years agosh64: add missing #include <asm/fpu.h>'s
Adrian Bunk [Sun, 13 Apr 2008 18:15:38 +0000]
sh64: add missing #include <asm/fpu.h>'s

This patch fixes some compile errors due to missing save_fpu()
prototypes on sh64 caused by
commit 9bbafce2eec190ef7e44b0eb1095ba17ce6ad3af
(sh: Fix occasional FPU register corruption under preempt).

Signed-off-by: Adrian Bunk <adrian.bunk@movial.fi>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

11 years agoblock: update git url for blktrace
Jens Axboe [Tue, 15 Apr 2008 08:23:35 +0000]
block: update git url for blktrace

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

11 years agonetconsole: only set CON_PRINTBUFFER if the user specifies a netconsole
Michael Ellerman [Tue, 15 Apr 2008 07:49:04 +0000]
netconsole: only set CON_PRINTBUFFER if the user specifies a netconsole

Since 0bcc1816188e570bde1d56a208996660f2633ae0 (netconsole: Support
dynamic reconfiguration using configfs), the netconsole is always
registered, regardless of whether the user actually specified a
netconsole configuration on the command line.

However because netconsole has CON_PRINTBUFFER set, when it is
registered it causes the printk buffer to be replayed to all consoles.
When there is no netconsole configured this is a) pointless, and b)
somewhat annoying for the user of the existing console.

So instead we should only set CON_PRINTBUFFER if there is a netconsole
configuration found on the command line. This retains the existing
behaviour if a netconsole is setup by the user, and avoids spamming
other consoles when we're only registering for the dynamic
netconsole case.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

11 years ago[CAN]: Update documentation of struct sockaddr_can
Oliver Hartkopp [Tue, 15 Apr 2008 07:46:38 +0000]
[CAN]: Update documentation of struct sockaddr_can

The struct sockaddr_can has been simplified in the code review
process.  This patch updates this simplification also in the
associated documentation in can.txt .

Signed-off-by: Oliver Hartkopp <oliver@hartkopp.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

11 years agoMAINTAINERS: isdn4linux@listserv.isdn4linux.de is subscribers-only
Paul Bolle [Tue, 15 Apr 2008 07:40:48 +0000]
MAINTAINERS: isdn4linux@listserv.isdn4linux.de is subscribers-only

https://www.isdn4linux.de/mailman/listinfo/isdn4linux: "To prevent spamming,
you have to subscribe first. Mails from non-members are silently ignored!"

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: David S. Miller <davem@davemloft.net>

11 years ago[TCP]: Fix never pruned tcp out-of-order queue.
Vitaliy Gusev [Tue, 15 Apr 2008 07:33:38 +0000]
[TCP]: Fix never pruned tcp out-of-order queue.

tcp_prune_queue() doesn't prune an out-of-order queue at all.
Therefore sk_rmem_schedule() can fail but the out-of-order queue isn't
pruned . This can lead to tcp deadlock state if the next two
conditions are held:

1. There are a sequence hole between last received in
   order segment and segments enqueued to the out-of-order queue.

2. Size of all segments in the out-of-order queue is more than tcp_mem[2].

Signed-off-by: Vitaliy Gusev <vgusev@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

11 years agoio context: increment task attachment count in ioc_task_link()
Jens Axboe [Tue, 15 Apr 2008 07:25:33 +0000]
io context: increment task attachment count in ioc_task_link()

Thanks to Nikanth Karthikesan <knikanth@suse.de> for reporting this.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

11 years agoJFFS2 Fix of panics caused by wrong condition for hole frag creation in write_begin
Alexey Korolev [Mon, 14 Apr 2008 19:45:06 +0000]
JFFS2 Fix of panics caused by wrong condition for hole frag creation in write_begin

This fixes a regression introduced in commit
205c109a7a96d9a3d8ffe64c4068b70811fef5e8 when switching to
write_begin/write_end operations in JFFS2.

The page offset is miscalculated, leading to corruption of the fragment
lists and subsequently to memory corruption and panics.

[ Side note: the bug is a fairly direct result of the naming.  Nick was
  likely misled by the use of "offs", since we tend to use the notion of
  "offset" not as an absolute position, but as an offset _within_ a page
  or allocation.

  Alternatively, a "pgoff_t" is a page index, but not a byte offset -
  our VM naming can be a bit confusing.

  So in this case, a VM person would likely have called this a "pos",
  not an "offs", or perhaps talked about byte offsets rather than page
  offsets (since it's counted in bytes, not pages).    - Linus ]

Signed-off-by: Alexey Korolev <akorolev@infradead.org>
Signed-off-by: Vasiliy Leonenko <vasiliy.leonenko@mail.ru>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

11 years ago[NET_SCHED] sch_api: fix qdisc_tree_decrease_qlen() loop
Jarek Poplawski [Mon, 14 Apr 2008 22:10:42 +0000]
[NET_SCHED] sch_api: fix qdisc_tree_decrease_qlen() loop

TC_H_MAJ(parentid) for root classes is the same as for ingress, and if
ingress qdisc is created qdisc_lookup() returns its pointer (without
ingress NULL is returned). After this all qdisc_lookups give the same,
and we get endless loop. (I don't know how this could hide for so long
- it should trigger with every leaf class deleted if it's qdisc isn't
empty.)

After this fix qdisc_lookup() is omitted both for ingress and root
parents, but looking for root is only wasting a little time here...
Many thanks to Enrico Demarin for finding a test for catching this
bug, which probably bothered quite a lot of admins.

Reported-by: Enrico Demarin <enrico@superclick.com>,
Signed-off-by: Jarek Poplawski <jarkao2@gmail.com>
Acked-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

11 years agolocks: fix possible infinite loop in fcntl(F_SETLKW) over nfs
J. Bruce Fields [Mon, 14 Apr 2008 19:03:02 +0000]
locks: fix possible infinite loop in fcntl(F_SETLKW) over nfs

Miklos Szeredi found the bug:

"Basically what happens is that on the server nlm_fopen() calls
nfsd_open() which returns -EACCES, to which nlm_fopen() returns
NLM_LCK_DENIED.

"On the client this will turn into a -EAGAIN (nlm_stat_to_errno()),
which in will cause fcntl_setlk() to retry forever."

So, for example, opening a file on an nfs filesystem, changing
permissions to forbid further access, then trying to lock the file,
could result in an infinite loop.

And Trond Myklebust identified the culprit, from Marc Eshel and I:

7723ec9777d9832849b76475b1a21a2872a40d20 "locks: factor out
generic/filesystem switch from setlock code"

That commit claimed to just be reshuffling code, but actually introduced
a behavioral change by calling the lock method repeatedly as long as it
returned -EAGAIN.

We assumed this would be safe, since we assumed a lock of type SETLKW
would only return with either success or an error other than -EAGAIN.
However, nfs does can in fact return -EAGAIN in this situation, and
independently of whether that behavior is correct or not, we don't
actually need this change, and it seems far safer not to depend on such
assumptions about the filesystem's ->lock method.

Therefore, revert the problematic part of the original commit.  This
leaves vfs_lock_file() and its other callers unchanged, while returning
fcntl_setlk and fcntl_setlk64 to their former behavior.

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Tested-by: Miklos Szeredi <mszeredi@suse.cz>
Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
Cc: Marc Eshel <eshel@almaden.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

11 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux...
Linus Torvalds [Mon, 14 Apr 2008 15:10:27 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/mingo/linux-2.6-sched-devel

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched-devel:
  revert "sched: fix fair sleepers"

11 years agoMerge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzi...
Linus Torvalds [Mon, 14 Apr 2008 14:57:07 +0000]
Merge branch 'upstream-linus' of git://git./linux/kernel/git/jgarzik/libata-dev

* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev:
  [libata] make ali_atapi_dma static
  [libata] sata_svw: fix reversed port count

11 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
Linus Torvalds [Mon, 14 Apr 2008 14:56:24 +0000]
Merge git://git./linux/kernel/git/davem/net-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (31 commits)
  [BRIDGE]: Fix crash in __ip_route_output_key with bridge netfilter
  [NETFILTER]: ipt_CLUSTERIP: fix race between clusterip_config_find_get and _entry_put
  [IPV6] ADDRCONF: Don't generate temporary address for ip6-ip6 interface.
  [IPV6] ADDRCONF: Ensure disabling multicast RS even if privacy extensions are disabled.
  [IPV6]: Use appropriate sock tclass setting for routing lookup.
  [IPV6]: IPv6 extension header structures need to be packed.
  [IPV6]: Fix ipv6 address fetching in raw6_icmp_error().
  [NET]: Return more appropriate error from eth_validate_addr().
  [ISDN]: Do not validate ISDN net device address prior to interface-up
  [NET]: Fix kernel-doc for skb_segment
  [SOCK] sk_stamp: should be initialized to ktime_set(-1L, 0)
  net: check for underlength tap writes
  net: make struct tun_struct private to tun.c
  [SCTP]: IPv4 vs IPv6 addresses mess in sctp_inet[6]addr_event.
  [SCTP]: Fix compiler warning about const qualifiers
  [SCTP]: Fix protocol violation when receiving an error lenght INIT-ACK
  [SCTP]: Add check for hmac_algo parameter in sctp_verify_param()
  [NET_SCHED] cls_u32: refcounting fix for u32_delete()
  [DCCP]: Fix skb->cb conflicts with IP
  [AX25]: Potential ax25_uid_assoc-s leaks on module unload.
  ...

11 years agoFRV: Correctly determine the address of an illegal instruction
David Howells [Mon, 14 Apr 2008 10:20:59 +0000]
FRV: Correctly determine the address of an illegal instruction

Correctly determine the address of an illegal instruction.  The EPCR0 register
holds this value (masked by EPCR0_PC) if the validity bit is set (masked by
EPCR0_V).  So the test as to whether the contents of the register are usable
should be involve checking the _V bit, not the _PC bits.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

11 years agorevert "sched: fix fair sleepers"
Ingo Molnar [Mon, 14 Apr 2008 06:50:02 +0000]
revert "sched: fix fair sleepers"

revert "sched: fix fair sleepers" (e22ecef1d2658ba54ed7d3fdb5d60829fb434c23),
because it is causing audio skipping, see:

   http://bugzilla.kernel.org/show_bug.cgi?id=10428

the patch is correct and the real cause of the skipping is not
understood (tracing makes it go away), but time has run out so we'll
revert it and re-try in 2.6.26.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

11 years ago[BRIDGE]: Fix crash in __ip_route_output_key with bridge netfilter
Patrick McHardy [Mon, 14 Apr 2008 07:46:01 +0000]
[BRIDGE]: Fix crash in __ip_route_output_key with bridge netfilter

The bridge netfilter code attaches a fake dst_entry with a pointer to a
fake net_device structure to skbs it passes up to IPv4 netfilter. This
leads to crashes when the skb is passed to __ip_route_output_key when
dereferencing the namespace pointer.

Since bridging can currently only operate in the init_net namespace,
the easiest fix for now is to initialize the nd_net pointer of the
fake net_device struct to &init_net.

Should fix bugzilla 10323: http://bugzilla.kernel.org/show_bug.cgi?id=10323

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

11 years ago[NETFILTER]: ipt_CLUSTERIP: fix race between clusterip_config_find_get and _entry_put
Pavel Emelyanov [Mon, 14 Apr 2008 07:44:52 +0000]
[NETFILTER]: ipt_CLUSTERIP: fix race between clusterip_config_find_get and _entry_put

Consider we are putting a clusterip_config entry with the "entries"
count == 1, and on the other CPU there's a clusterip_config_find_get
in progress:

CPU1: CPU2:
clusterip_config_entry_put: clusterip_config_find_get:
if (atomic_dec_and_test(&c->entries)) {
/* true */
read_lock_bh(&clusterip_lock);
c = __clusterip_config_find(clusterip);
/* found - it's still in list */
...
atomic_inc(&c->entries);
read_unlock_bh(&clusterip_lock);

write_lock_bh(&clusterip_lock);
list_del(&c->list);
write_unlock_bh(&clusterip_lock);
...
dev_put(c->dev);

Oops! We have an entry returned by the clusterip_config_find_get,
which is a) not in list b) has a stale dev pointer.

The problems will happen when the CPU2 will release the entry - it
will remove it from the list for the 2nd time, thus spoiling it, and
will put a stale dev pointer.

The fix is to make atomic_dec_and_test under the clusterip_lock.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: Patrick McHardy <kaber@trash.net>

11 years ago[IPV6] ADDRCONF: Don't generate temporary address for ip6-ip6 interface.
YOSHIFUJI Hideaki [Mon, 14 Apr 2008 06:47:11 +0000]
[IPV6] ADDRCONF: Don't generate temporary address for ip6-ip6 interface.

As far as I can remember, I was going to disable privacy extensions
on all "tunnel" interfaces.  Disable it on ip6-ip6 interface as well.

Also, just remove ifdefs for SIT for simplicity.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

11 years ago[IPV6] ADDRCONF: Ensure disabling multicast RS even if privacy extensions are disabled.
YOSHIFUJI Hideaki [Mon, 14 Apr 2008 06:42:18 +0000]
[IPV6] ADDRCONF: Ensure disabling multicast RS even if privacy extensions are disabled.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

11 years ago[IPV6]: Use appropriate sock tclass setting for routing lookup.
YOSHIFUJI Hideaki [Mon, 14 Apr 2008 06:40:51 +0000]
[IPV6]: Use appropriate sock tclass setting for routing lookup.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

11 years ago[IPV6]: IPv6 extension header structures need to be packed.
YOSHIFUJI Hideaki [Mon, 14 Apr 2008 06:33:52 +0000]
[IPV6]: IPv6 extension header structures need to be packed.

struct ipv6_opt_hdr is the common structure for IPv6 extension
headers, and it is common to increment the pointer to get
the real content.  On the other hand, since the structure
consists only of 1-byte next-header field and 1-byte length
field, size of that structure depends on architecture; 2 or 4.
Add "packed" attribute to get 2.

Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

11 years ago[IPV6]: Fix ipv6 address fetching in raw6_icmp_error().
David S. Miller [Mon, 14 Apr 2008 06:14:15 +0000]
[IPV6]: Fix ipv6 address fetching in raw6_icmp_error().

Fixes kernel bugzilla 10437

Based almost entirely upon a patch by Dmitry Butskoy.

When deciding what raw sockets to deliver the ICMPv6
to, we should use the addresses in the ICMPv6 quoted
IPV6 header, not the top-level one.

Signed-off-by: David S. Miller <davem@davemloft.net>

11 years ago[NET]: Return more appropriate error from eth_validate_addr().
Patrick McHardy [Mon, 14 Apr 2008 05:45:40 +0000]
[NET]: Return more appropriate error from eth_validate_addr().

Paul Bolle wrote:
> http://bugzilla.kernel.org/show_bug.cgi?id=9923 would have been much easier to
> track down if eth_validate_addr() would somehow complain aloud if an address
> is invalid. Shouldn't it make at least some noise?

I guess it should return -EADDRNOTAVAIL similar to eth_mac_addr()
when validation fails.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

11 years ago[ISDN]: Do not validate ISDN net device address prior to interface-up
Paul Bolle [Mon, 14 Apr 2008 05:44:20 +0000]
[ISDN]: Do not validate ISDN net device address prior to interface-up

Commit bada339 (Validate device addr prior to interface-up) caused a regression
in the ISDN network code, see: http://bugzilla.kernel.org/show_bug.cgi?id=9923
The trivial fix is to remove the pointer to eth_validate_addr() in the
net_device struct in isdn_net_init().

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: David S. Miller <davem@davemloft.net>

11 years ago[NET]: Fix kernel-doc for skb_segment
Ben Hutchings [Mon, 14 Apr 2008 04:52:48 +0000]
[NET]: Fix kernel-doc for skb_segment

The kernel-doc comment for skb_segment is clearly wrong.  This states
what it actually does.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

11 years ago[SOCK] sk_stamp: should be initialized to ktime_set(-1L, 0)
Eric Dumazet [Mon, 14 Apr 2008 04:39:26 +0000]
[SOCK] sk_stamp: should be initialized to ktime_set(-1L, 0)

Problem spotted by Andrew Brampton

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

11 years agonet: check for underlength tap writes
Rusty Russell [Sun, 13 Apr 2008 01:49:30 +0000]
net: check for underlength tap writes

If the user gives a packet under 14 bytes, we'll end up reading off the end
of the skb (not oopsing, just reading off the end).

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: Max Krasnyanskiy <maxk@qualcomm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

11 years agonet: make struct tun_struct private to tun.c
Rusty Russell [Sun, 13 Apr 2008 01:48:58 +0000]
net: make struct tun_struct private to tun.c

There's no reason for this to be in the header, and it just hurts
recompile time.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Acked-by: Max Krasnyanskiy <maxk@qualcomm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

11 years ago[SCTP]: IPv4 vs IPv6 addresses mess in sctp_inet[6]addr_event.
Pavel Emelyanov [Sun, 13 Apr 2008 01:40:38 +0000]
[SCTP]: IPv4 vs IPv6 addresses mess in sctp_inet[6]addr_event.

All IP addresses that are present in a system are duplicated on
struct sctp_sockaddr_entry. They are linked in the global list
called sctp_local_addr_list. And this struct unions IPv4 and IPv6
addresses.

So, there can be rare case, when a sockaddr_in.sin_addr coincides
with the corresponding part of the sockaddr_in6 and the notifier
for IPv4 will carry away an IPv6 entry.

The fix is to check the family before comparing the addresses.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

11 years ago[SCTP]: Fix compiler warning about const qualifiers
Vlad Yasevich [Sun, 13 Apr 2008 01:40:06 +0000]
[SCTP]: Fix compiler warning about const qualifiers

Fix 3 warnings about discarding const qualifiers:

net/sctp/ulpevent.c:862: warning: passing argument 1 of 'sctp_event2skb' discards qualifiers from pointer target type
net/sctp/sm_statefuns.c:4393: warning: passing argument 1 of 'SCTP_ASOC' discards qualifiers from pointer target type
net/sctp/socket.c:5874: warning: passing argument 1 of 'cmsg_nxthdr' discards qualifiers from pointer target type

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>