7 years agoThermal: Fix DEFAULT_THERMAL_GOVERNOR
Zhang Rui [Wed, 12 Dec 2012 07:31:37 +0000]
Thermal: Fix DEFAULT_THERMAL_GOVERNOR

Fix DEFAULT_THERMAL_GOVERNOR to be consistant with the
default governor selected in kernel config file.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>

7 years agoThermal: fix a NULL pointer dereference when generic thermal layer is built as a...
Zhang Rui [Wed, 12 Dec 2012 07:23:54 +0000]
Thermal: fix a NULL pointer dereference when generic thermal layer is built as a module

[   12.761956] BUG: unable to handle kernel NULL pointer dereference at 0000000000000018
[   12.762016] IP: [<ffffffffa0005277>] handle_thermal_trip+0x47/0x130 [thermal_sys]
[   12.762060] PGD 1fec74067 PUD 1fee5b067 PMD 0
[   12.762127] Oops: 0000 [#1] SMP
[   12.762177] Modules linked in: hid_generic crc32c_intel usbhid hid firewire_ohci(+) e1000e(+) firewire_core crc_itu_t xhci_hcd(+) thermal(+) fan thermal_sys hwmon
[   12.762423] CPU 1
[   12.762443] Pid: 187, comm: modprobe Tainted: G       A     3.7.0-thermal-module+ #25                  /DH77DF
[   12.762496] RIP: 0010:[<ffffffffa0005277>]  [<ffffffffa0005277>] handle_thermal_trip+0x47/0x130 [thermal_sys]
[   12.762682] RSP: 0018:ffff8801fe7ddc18  EFLAGS: 00010282
[   12.762704] RAX: 0000000000000000 RBX: ffff8801ff3e9c00 RCX: ffff8801fdc39800
[   12.762728] RDX: ffff8801fe7ddc24 RSI: 0000000000000001 RDI: ffff8801ff3e9c00
[   12.762764] RBP: ffff8801fe7ddc48 R08: 0000000004000000 R09: ffffffffa001f568
[   12.762797] R10: ffffffff81363083 R11: 0000000000000001 R12: 0000000000000001
[   12.762832] R13: 0000000000000000 R14: 0000000000000001 R15: ffff8801fde73e68
[   12.762866] FS:  00007f5548516700(0000) GS:ffff88021f240000(0000) knlGS:0000000000000000
[   12.762912] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   12.762946] CR2: 0000000000000018 CR3: 00000001fefe2000 CR4: 00000000001407e0
[   12.762979] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   12.763014] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[   12.763048] Process modprobe (pid: 187, threadinfo ffff8801fe7dc000, task ffff8801fe5bdb40)
[   12.763095] Stack:
[   12.763122]  0000000000019640 00000000fdc39800 ffff8801fe7ddc48 ffff8801ff3e9c00
[   12.763225]  0000000000000002 0000000000000000 ffff8801fe7ddc78 ffffffffa00053e7
[   12.763338]  ffff8801ff3e9c00 0000000000006c98 ffffffffa0007480 ffff8801ff3e9c00
[   12.763440] Call Trace:
[   12.763470]  [<ffffffffa00053e7>] thermal_zone_device_update+0x77/0xa0 [thermal_sys]
[   12.763515]  [<ffffffffa0006d38>] thermal_zone_device_register+0x788/0xa88 [thermal_sys]
[   12.763562]  [<ffffffffa001f394>] acpi_thermal_add+0x360/0x4c8 [thermal]
[   12.763598]  [<ffffffff8133902a>] acpi_device_probe+0x50/0x190
[   12.763632]  [<ffffffff811bd793>] ? sysfs_create_link+0x13/0x20
[   12.763666]  [<ffffffff813cc41b>] driver_probe_device+0x7b/0x240
[   12.763699]  [<ffffffff813cc68b>] __driver_attach+0xab/0xb0
[   12.763732]  [<ffffffff813cc5e0>] ? driver_probe_device+0x240/0x240
[   12.763766]  [<ffffffff813ca836>] bus_for_each_dev+0x56/0x90
[   12.763799]  [<ffffffff813cbf4e>] driver_attach+0x1e/0x20
[   12.763831]  [<ffffffff813cbac0>] bus_add_driver+0x190/0x290
[   12.763864]  [<ffffffffa0022000>] ? 0xffffffffa0021fff
[   12.763896]  [<ffffffff813ccbea>] driver_register+0x7a/0x160
[   12.763928]  [<ffffffffa0022000>] ? 0xffffffffa0021fff
[   12.763960]  [<ffffffff813399fb>] acpi_bus_register_driver+0x43/0x45
[   12.763995]  [<ffffffffa002203a>] acpi_thermal_init+0x3a/0x42 [thermal]
[   12.764029]  [<ffffffff8100207f>] do_one_initcall+0x3f/0x170
[   12.764063]  [<ffffffff810b1a5f>] sys_init_module+0x8f/0x200
[   12.764097]  [<ffffffff815ff259>] system_call_fastpath+0x16/0x1b
[   12.764129] Code: 48 8b 87 c8 02 00 00 41 89 f4 48 8d 55 dc ff 50 28 44 8b 6d dc 41 8d 45 fe 83 f8 01 76 5e 48 8b 83 d8 02 00 00 44 89 e6 48 89 df <ff> 50 18 4c 8d a3 10 03 00 00 4c 89 e7 e8 87 f1 5e e1 8b 83 bc
[   12.765164] RIP  [<ffffffffa0005277>] handle_thermal_trip+0x47/0x130 [thermal_sys]
[   12.765223]  RSP <ffff8801fe7ddc18>
[   12.765252] CR2: 0000000000000018
[   12.765284] ---[ end trace 7723294cdfb00d2a ]---

This is because thermal_zone_device_update() is invoked before
any thermal governors being registered.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>

7 years agothermal: rcar: add rcar_zone_to_priv() macro
Kuninori Morimoto [Mon, 26 Nov 2012 02:32:20 +0000]
thermal: rcar: add rcar_zone_to_priv() macro

This patch adds rcar_zone_to_priv()
which is a helper macro for gettign private data.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>

7 years agothermal: rcar: fixup the unit of temperature
Kuninori Morimoto [Mon, 26 Nov 2012 02:32:06 +0000]
thermal: rcar: fixup the unit of temperature

The unit of temperature is Milli-Celsius.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>

7 years agothermal: cpu cooling: allow module builds
Eduardo Valentin [Wed, 14 Nov 2012 15:23:30 +0000]
thermal: cpu cooling: allow module builds

As thermal drivers can be built as modules and also
the thermal framework itself, building cpu cooling
only as built-in can cause linking errors. For instance:
* Generic Thermal sysfs driver
*
Generic Thermal sysfs driver (THERMAL) [M/n/y/?] m
  generic cpu cooling support (CPU_THERMAL) [N/y/?] (NEW) y

with the following drive:
CONFIG_OMAP_BANDGAP=m

generates:
ERROR: "cpufreq_cooling_unregister" [drivers/staging/omap-thermal/omap-thermal.ko] undefined!
ERROR: "cpufreq_cooling_register" [drivers/staging/omap-thermal/omap-thermal.ko] undefined!

This patch changes cpu cooling driver to allow it
to be built as module.

Reported-by: Enric Balletbo i Serra <eballetbo@gmail.com>
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Reviewed-by: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>

7 years agothermal: cpu cooling: use const parameter while registering
Eduardo Valentin [Mon, 12 Nov 2012 15:58:50 +0000]
thermal: cpu cooling: use const parameter while registering

There are predefined cpu_masks that are const data structures.
This patch changes the cpu cooling register function so that
those const cpu_masks can be used, without compilation warnings.

include/linux/cpumask.h

 * The following particular system cpumasks and operations manage
 * possible, present, active and online cpus.
 *
 *     cpu_possible_mask- has bit 'cpu' set iff cpu is populatable
 *     cpu_present_mask - has bit 'cpu' set iff cpu is populated
 *     cpu_online_mask  - has bit 'cpu' set iff cpu available to scheduler
 *     cpu_active_mask  - has bit 'cpu' set iff cpu available to migration
 *

Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>

7 years agoThermal: Add ST-Ericsson DB8500 thermal properties and platform data.
hongbo.zhang [Thu, 15 Nov 2012 10:56:43 +0000]
Thermal: Add ST-Ericsson DB8500 thermal properties and platform data.

This patch adds device tree properties for ST-Ericsson DB8500 thermal driver,
also adds the platform data to support the old fashion.

Signed-off-by: hongbo.zhang <hongbo.zhang@linaro.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>

7 years agoThermal: Add ST-Ericsson DB8500 thermal driver.
hongbo.zhang [Thu, 15 Nov 2012 10:56:42 +0000]
Thermal: Add ST-Ericsson DB8500 thermal driver.

This driver is based on the thermal management framework in thermal_sys.c. A
thermal zone device is created with the trip points to which cooling devices
can be bound, the current cooling device is cpufreq, e.g. CPU frequency is
clipped down to cool the CPU, and other cooling devices can be added and bound
to the trip points dynamically.  The platform specific PRCMU interrupts are
used to active thermal update when trip points are reached.

Signed-off-by: hongbo.zhang <hongbo.zhang@linaro.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Francesco Lavra <francescolavra.fl@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>

7 years agodrivers/thermal/Makefile refactor
Zhang Rui [Thu, 15 Nov 2012 08:07:46 +0000]
drivers/thermal/Makefile refactor

Signed-off-by: Zhang Rui <rui.zhang@intel.com>

7 years agoExynos: Add missing dependency
Zhang Rui [Thu, 15 Nov 2012 06:51:05 +0000]
Exynos: Add missing dependency

CPU_FREQ_TABLE depends on CPU_FREQ. Selecting CPU_FREQ_TABLE without checking
for dependencies gives the following compilation warnings:
warning: (ARCH_TEGRA_2x_SOC && ARCH_TEGRA_3x_SOC && UX500_SOC_DB8500 &&
CPU_THERMAL && EXYNOS_THERMAL) selects CPU_FREQ_TABLE which has unmet
direct dependencies (ARCH_HAS_CPUFREQ && CPU_FREQ)

Based-on-patch-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>

7 years agoRefactor drivers/thermal/Kconfig
Zhang Rui [Thu, 15 Nov 2012 01:16:20 +0000]
Refactor drivers/thermal/Kconfig

Signed-off-by: Zhang Rui <rui.zhang@intel.com>

7 years agothermal: cpu_cooling: Make 'notify_device' static
Sachin Kamat [Thu, 15 Nov 2012 06:49:44 +0000]
thermal: cpu_cooling: Make 'notify_device' static

Silences the following sparse warning:

drivers/thermal/cpu_cooling.c:67:31: warning:
symbol 'notify_device' was not declared. Should it be static?

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>

7 years agoThermal: Remove the cooling_cpufreq_list.
hongbo.zhang [Tue, 30 Oct 2012 16:48:59 +0000]
Thermal: Remove the cooling_cpufreq_list.

Problem of using this list is that the cpufreq_get_max_state callback will be
called when register cooling device by thermal_cooling_device_register, but
this list isn't ready at this moment. What's more, there is no need to maintain
such a list, we can get cpufreq_cooling_device instance by the private
thermal_cooling_device.devdata.

Signed-off-by: hongbo.zhang <hongbo.zhang@linaro.com>
Reviewed-by: Francesco Lavra <francescolavra.fl@gmail.com>
Reviewed-by: Amit Daniel Kachhap <amit.kachhap@linaro.org>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>

7 years agoThermal: fix bug of counting cpu frequencies.
hongbo.zhang [Tue, 30 Oct 2012 16:48:58 +0000]
Thermal: fix bug of counting cpu frequencies.

In the while loop for counting cpu frequencies, if table[i].frequency equals
CPUFREQ_ENTRY_INVALID, index i won't be increased, so this leads to an endless
loop, what's more the index i cannot be referred as cpu frequencies number if
there is CPUFREQ_ENTRY_INVALID case.

Signed-off-by: hongbo.zhang <hongbo.zhang@linaro.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Amit Daniel Kachhap <amit.kachhap@linaro.org>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>

7 years agoThermal: add indent for code alignment.
hongbo.zhang [Tue, 30 Oct 2012 16:48:57 +0000]
Thermal: add indent for code alignment.

The curly bracket should be aligned with corresponding if else statements.

Signed-off-by: hongbo.zhang <hongbo.zhang@linaro.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>

7 years agothermal: rcar_thermal: remove explicitly used devm_kfree/iounap()
Kuninori Morimoto [Wed, 3 Oct 2012 06:51:09 +0000]
thermal: rcar_thermal: remove explicitly used devm_kfree/iounap()

devm_kfree and devm_iounmap should not have to be explicitly used

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>

7 years agothermal: user_space: Add missing static storage class specifiers
Sachin Kamat [Thu, 27 Sep 2012 11:27:54 +0000]
thermal: user_space: Add missing static storage class specifiers

Fixes the following sparse warnings:
drivers/thermal/user_space.c:38:5: warning:
symbol 'notify_user_space' was not declared. Should it be static?
drivers/thermal/user_space.c:46:25: warning:
symbol 'thermal_gov_user_space' was not declared. Should it be static?

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Acked-by: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>

7 years agothermal: fair_share: Add missing static storage class specifiers
Sachin Kamat [Thu, 27 Sep 2012 11:27:53 +0000]
thermal: fair_share: Add missing static storage class specifiers

Fixes the following sparse warnings:
drivers/thermal/fair_share.c:80:5: warning:
symbol 'fair_share_throttle' was not declared. Should it be static?
drivers/thermal/fair_share.c:111:25: warning:
symbol 'thermal_gov_fair_share' was not declared. Should it be static?

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Acked-by: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>

7 years agothermal: step_wise: Add missing static storage class specifiers
Sachin Kamat [Thu, 27 Sep 2012 10:58:12 +0000]
thermal: step_wise: Add missing static storage class specifiers

Fixes the following sparse warnings:
drivers/thermal/step_wise.c:153:5: warning:
symbol 'step_wise_throttle' was not declared. Should it be static?
drivers/thermal/step_wise.c:172:25: warning:
symbol 'thermal_gov_step_wise' was not declared. Should it be static?

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Acked-by: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>

7 years agoThermal: Fix oops and unlocking in thermal_sys.c
Hugh Dickins [Thu, 27 Sep 2012 23:48:28 +0000]
Thermal: Fix oops and unlocking in thermal_sys.c

This patch fixes the following mutex and NULL pointer
problems in thermal_sys.c:

 * mutex_unlock fix in update_temperature function
 * mutex_unlock fix in bind_cdev function
 * Correct early return to continue in bind_cdev function
 * NULL check fix in bind_cdev function
 * NULL check fix in bind_tz function

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Reported-by: Sedat Dilek <sedat.dilek@gmail.com>
Reported-by: Hugh Dickins <hughd@google.com>
Signed-off-by: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Sedat Dilek <sedat.dilek@gmail.com>
Signed-off-by: Hugh Dickins <hughd@google.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>

7 years agoThermal: Provide option to choose default thermal governor
Durgadoss R [Fri, 21 Sep 2012 09:02:24 +0000]
Thermal: Provide option to choose default thermal governor

This patch provides option to choose the default thermal
governor. If no option is provided, the step_wise
governor is selected by default.

Signed-off-by: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>

7 years agoThermal: Add documentation for platform layer data
Durgadoss R [Tue, 18 Sep 2012 05:35:06 +0000]
Thermal: Add documentation for platform layer data

This patch adds documentation for thermal_bind_params
and thermal_zone_params structures. Also, adds details
on EXPORT_SYMBOL APIs.

Signed-off-by: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>

7 years agoThermal: Add a notification API
Durgadoss R [Tue, 18 Sep 2012 05:35:05 +0000]
Thermal: Add a notification API

This patch adds a notification API which the sensor drivers'
can use to notify the framework. The framework then takes
care of the throttling according to the configured policy.

Signed-off-by: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>

7 years agoThermal: Remove throttling logic out of thermal_sys.c
Durgadoss R [Tue, 18 Sep 2012 05:35:04 +0000]
Thermal: Remove throttling logic out of thermal_sys.c

This patch removes the throttling logic out of
thermal_sys.c; also refactors the code into smaller
functions so that are easy to read/maintain.
 * Seperates the handling of critical and non-critical trips
 * Re-arranges the set_polling and device_check methods, so
   that all related functions are arranged in one place.
 * Removes the 'do_update' and 'trip_update' method, as part
   of moving the throttling logic out of thermal_sys.c

Signed-off-by: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>

7 years agoThermal: Add a thermal notifier for user space
Durgadoss R [Tue, 18 Sep 2012 05:35:03 +0000]
Thermal: Add a thermal notifier for user space

This patch registers a governor which will let the
user land manage the platform thermals. Whenever a
trip happens, this governor just notifies the user
space using kobj_uevent().

Signed-off-by: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>

7 years agoThermal: Introduce a step_wise thermal governor
Durgadoss R [Fri, 21 Sep 2012 06:36:04 +0000]
Thermal: Introduce a step_wise thermal governor

This patch adds a simple step_wise governor to the
generic thermal layer. This algorithm throttles the
cooling devices in a linear fashion. If the 'trend'
is heating, it throttles by one step. And if the
thermal trend is cooling it de-throttles by one step.

This actually moves the throttling logic from thermal_sys.c
and puts inside step_wise.c, without any change.

Signed-off-by: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>

7 years agoThermal: Introduce fair_share thermal governor
Durgadoss R [Tue, 18 Sep 2012 05:35:01 +0000]
Thermal: Introduce fair_share thermal governor

This patch introduces a simple 'weight' based
governor named fair_share governor. Whenever the
thermal framework gets notified of the trip point
violation, this governor (if configured), throttles
the cooling devices associated with a thermal zone.

This mapping between a thermal zone and a cooling device
and the effectiveness of cooling are provided in the
platform layer.

Signed-off-by: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>

7 years agoThermal: Make thermal_cdev_update as a global function
Durgadoss R [Tue, 18 Sep 2012 05:35:00 +0000]
Thermal: Make thermal_cdev_update as a global function

This patch makes the thermal_cdev_update function as a
global one, so that other files can use it. This function
serves as a single arbitrator to set the state of a cooling
device.

Signed-off-by: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>

7 years agoThermal: Update binding logic based on platform data
Durgadoss R [Tue, 18 Sep 2012 05:34:59 +0000]
Thermal: Update binding logic based on platform data

This patch updates the binding logic in thermal_sys.c
It uses the platform layer data to bind a thermal zone
to a cdev for a particular trip point.

 * If we do not have platform data and do not have
   .bind defined, do not bind.
 * If we do not have platform data but .bind is
   defined, then use tz->ops->bind.
 * If we have platform data, use it to create binding.

The same logic sequence is followed for unbind also.

Signed-off-by: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>

7 years agoThermal: Add a policy sysfs attribute
Durgadoss R [Tue, 18 Sep 2012 05:34:58 +0000]
Thermal: Add a policy sysfs attribute

This patch adds a policy sysfs attribute to a thermal zone.
This attribute denotes the throttling governor used for the
zone. This is a RW attribute.

Signed-off-by: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>

7 years agoThermal: Add thermal governor registration APIs
Durgadoss R [Tue, 18 Sep 2012 05:34:57 +0000]
Thermal: Add thermal governor registration APIs

This patch creates a structure to hold platform
thermal governor information, and provides APIs
for individual thermal governors to register/unregister
with the Thermal framework.

Signed-off-by: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>

7 years agoThermal: Pass zone parameters as argument to tzd_register
Durgadoss R [Tue, 18 Sep 2012 05:34:56 +0000]
Thermal: Pass zone parameters as argument to tzd_register

This patch adds the thermal zone parameter as an argument to
the tzd_register() function call; and updates other drivers
using this function.

Signed-off-by: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>

7 years agoThermal: Add platform level information to thermal.h
Durgadoss R [Tue, 18 Sep 2012 05:34:55 +0000]
Thermal: Add platform level information to thermal.h

This patch adds platform level information to thermal.h
by introducing two structures to hold:
 * bind parameters for a thermal zone,
 * zone level platform parameters

Signed-off-by: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>

7 years agoThermal: Add get trend, get instance API's to thermal_sys
Durgadoss R [Tue, 18 Sep 2012 05:34:54 +0000]
Thermal: Add get trend, get instance API's to thermal_sys

This patch adds the following API's to thermal_sys.c, that
can be used by other Thermal drivers.
 * get_tz_trend: obtain the trend of the given thermal zone
 * get_thermal_instance: obtain the instance corresponding
   to the given tz, cdev and the trip point.

Signed-off-by: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>

7 years agoThermal: Move thermal_instance to thermal_core.h
Durgadoss R [Tue, 18 Sep 2012 05:34:53 +0000]
Thermal: Move thermal_instance to thermal_core.h

This patch creates a thermal_core.h file which can contain
all defines used by the core thermal framework files. For
now, move the thermal_instance structure to thermal_core.h
This structure is used by files under drivers/thermal/.

Signed-off-by: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>

7 years agoThermal: Refactor thermal.h file
Durgadoss R [Tue, 18 Sep 2012 05:34:52 +0000]
Thermal: Refactor thermal.h file

This patch rearranges the code in thermal.h file,
in the following order, so that it is easy to
read/maintain.
1. All #defines
2. All enums
3. All fops structures
4. All device structures
5. All function declarations

Signed-off-by: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>

7 years agoLinux 3.7-rc4
Linus Torvalds [Sun, 4 Nov 2012 19:07:39 +0000]
Linux 3.7-rc4

7 years agoMerge tag 'nfs-for-3.7-4' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Linus Torvalds [Sat, 3 Nov 2012 22:27:21 +0000]
Merge tag 'nfs-for-3.7-4' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

Pull NFS client bugfixes from Trond Myklebust:

 - Fix a bunch of deadlock situations:
   * State recovery can deadlock if we fail to release sequence ids
     before scheduling the recovery thread.
   * Calling deactivate_super() from an RPC workqueue thread can
     deadlock because of the call to rpc_shutdown_client.

 - Display the device name correctly in /proc/*/mounts

 - Fix a number of incorrect error return values:
   * When NFSv3 mounts fail due to a timeout.
   * On NFSv4.1 backchannel setup failure
   * On NFSv4 open access checks

 - pnfs_find_alloc_layout() must check the layout pointer for NULL

 - Fix a regression in the legacy DNS resolved

* tag 'nfs-for-3.7-4' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
  NFS4: nfs4_opendata_access should return errno
  NFSv4: Initialise the NFSv4.1 slot table highest_used_slotid correctly
  SUNRPC: return proper errno from backchannel_rqst
  NFS: add nfs_sb_deactive_async to avoid deadlock
  nfs: Show original device name verbatim in /proc/*/mount{s,info}
  nfsv3: Make v3 mounts fail with ETIMEDOUTs instead EIO on mountd timeouts
  nfs: Check whether a layout pointer is NULL before free it
  NFS: fix bug in legacy DNS resolver.
  NFSv4: nfs4_locku_done must release the sequence id
  NFSv4.1: We must release the sequence id when we fail to get a session slot
  NFS: Wait for session recovery to finish before returning

7 years agoMerge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux
Linus Torvalds [Sat, 3 Nov 2012 22:25:14 +0000]
Merge branch 'release' of git://git./linux/kernel/git/rzhang/linux

Pull thermal management & ACPI update from Zhang Rui,

Ho humm.  Normally these things go through Len.  But it's just three
small fixes, I guess I can pull directly too.

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux:
  exynos4_tmu_driver_ids should be exynos_tmu_driver_ids.
  ACPI video: Ignore errors after _DOD evaluation.
  thermal: solve compilation errors in rcar_thermal

7 years agoMerge branch 'i2c-embedded/for-current' of git://git.pengutronix.de/git/wsa/linux
Linus Torvalds [Sat, 3 Nov 2012 22:14:54 +0000]
Merge branch 'i2c-embedded/for-current' of git://git.pengutronix.de/git/wsa/linux

Pull i2c embedded fixes from Wolfram Sang:
 "Two patches are usual stuff.

  The bigger patch is needed to correct a wrong decision made in this
  merge window.  We hoped to get the PIOQUEUE mode in the mxs driver
  working with DMA, but it turned out to be too broken (leading to data
  loss), so we now think it is best to remove it entirely and work only
  with DMA now.  The patch should be in 3.7.  IMO, so users never get
  the chance to use both modes in parallel."

* 'i2c-embedded/for-current' of git://git.pengutronix.de/git/wsa/linux:
  i2c: tegra: set irq name as device name
  i2c-nomadik: Fixup clock handling
  i2c: mxs: remove broken PIOQUEUE support

7 years agoMerge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Linus Torvalds [Sat, 3 Nov 2012 22:13:49 +0000]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux

Pull drm fixes from Dave Airlie:
 "Scattered selection of fixes:

   - radeon: load detect fixes from SuSE/AMD
   - intel: misc i830, sdvo regression, vesafb kickoff ums fix
   - exynos: maintainers entry update + fixes
   - udl: fix stride scanout issue

  it's slightly bigger than I'd probably like, but nothing looked
  dangerous enough to hold off on."

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
  drm/udl: fix stride issues scanning out stride != width*bpp
  drm/radeon: add load detection support for ext DAC on R200 (v2)
  DRM/radeon: For single CRTC GPUs move handling of CRTC_CRT_ON to crtc_dpms().
  DRM/Radeon: Fix TV DAC Load Detection for single CRTC chips.
  DRM/Radeon: Clean up code in TV DAC load detection.
  drm/radeon: fix ATPX function documentation
  drivers/gpu/drm/radeon/evergreen_cs.c: Remove unnecessary semicolon
  DRM/Radeon: On DVI-I use Load Detection when EDID is bogus.
  DRM/Radeon: Fix primary DAC Load Detection for RV100 chips.
  DRM/Radeon: Fix Load Detection on legacy primary DAC.
  drm: exynos: removed warning due to missing typecast for mixer driver data
  drm/exynos: add support for ARCH_MULTIPLATFORM
  MAINTAINERS: Add git repository for Exynos DRM
  drm/exynos: fix display on issue
  drm/i915: Only kick out vesafb if we takeover the fbcon with KMS
  drm/i915: be less verbose about inability to provide vendor backlight
  drm/i915: clear the entire sdvo infoframe buffer
  drm/i915: VGA needs to be on pipe A on i830M
  drm/i915: fix overlay on i830M

7 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Sat, 3 Nov 2012 03:48:41 +0000]
Merge git://git./linux/kernel/git/davem/net

Pull networking fixes from David Miller:
 "First post-Sandy pull request"

 1) Fix antenna gain handling and initialization of chan->max_reg_power
    in wireless, from Felix Fietkau.

 2) Fix nexthop handling in H.232 conntrack helper, from Julian
    Anastasov.

 3) Only process 80211 mesh config header in certain kinds of frames,
    from Javier Cardona.

 4) 80211 management frame header length needs to be validated, from
    Johannes Berg.

 5) Don't access free'd SKBs in ath9k driver, from Felix Fietkay.

 6) Test for permanent state correctly in VXLAN driver, from Stephen
    Hemminger.

 7) BNX2X bug fixes from Yaniv Rosner and Dmitry Kravkov.

 8) Fix off by one errors in bonding, from Nikolay ALeksandrov.

 9) Fix divide by zero in TCP-Illinois congestion control.  From Jesper
    Dangaard Brouer.

10) TCP metrics code says "Yo dawg, I heard you like sizeof, so I did a
    sizeof of a sizeof, so you can size your size" Fix from Julian
    Anastasov.

11) Several drivers do mdiobus_free without first doing an
    mdiobus_unregister leading to stray pointer references.  Fix from
    Peter Senna Tschudin.

12) Fix OOPS in l2tp_eth_create() error path, it's another danling
    pointer kinda situation.  Fix from Tom Parkin.

13) Hardware driven by the vmxnet driver can't handle larger than 16K
    fragments, so split them up when necessary.  From Eric Dumazet.

14) Handle zero length data length in tcp_send_rcvq() properly.  Fix
    from Pavel Emelyanov.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (38 commits)
  tcp-repair: Handle zero-length data put in rcv queue
  vmxnet3: must split too big fragments
  l2tp: fix oops in l2tp_eth_create() error path
  cxgb4: Fix unable to get UP event from the LLD
  drivers/net/phy/mdio-bitbang.c: Call mdiobus_unregister before mdiobus_free
  drivers/net/ethernet/nxp/lpc_eth.c: Call mdiobus_unregister before mdiobus_free
  bnx2x: fix HW initialization using fw 7.8.x
  tcp: Fix double sizeof in new tcp_metrics code
  net: fix divide by zero in tcp algorithm illinois
  net: sctp: Fix typo in net/sctp
  bonding: fix second off-by-one error
  bonding: fix off-by-one error
  bnx2x: Disable FCoE for 57840 since not yet supported by FW
  bnx2x: Fix no link on 577xx 10G-baseT
  bnx2x: Fix unrecognized SFP+ module after driver is loaded
  bnx2x: Fix potential incorrect link speed provision
  bnx2x: Restore global registers back to default.
  bnx2x: Fix link down in 57712 following LFA
  bnx2x: Fix 57810 1G-KR link against certain switches.
  ixgbe: PTP get_ts_info missing software support
  ...

7 years agotcp-repair: Handle zero-length data put in rcv queue
Pavel Emelyanov [Mon, 29 Oct 2012 05:05:33 +0000]
tcp-repair: Handle zero-length data put in rcv queue

When sending data into a tcp socket in repair state we should check
for the amount of data being 0 explicitly. Otherwise we'll have an skb
with seq == end_seq in rcv queue, but tcp doesn't expect this to happen
(in particular a warn_on in tcp_recvmsg shoots).

Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Reported-by: Giorgos Mavrikas <gmavrikas@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

7 years agovmxnet3: must split too big fragments
Eric Dumazet [Mon, 29 Oct 2012 07:30:49 +0000]
vmxnet3: must split too big fragments

vmxnet3 has a 16Kbytes limit per tx descriptor, that happened to work
as long as we provided PAGE_SIZE fragments.

Our stack can now build larger fragments, so we need to split them to
the 16kbytes boundary.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: jongman heo <jongman.heo@samsung.com>
Tested-by: jongman heo <jongman.heo@samsung.com>
Cc: Shreyas Bhatewara <sbhatewara@vmware.com>
Reviewed-by: Bhavesh Davda <bhavesh@vmware.com>
Signed-off-by: Shreyas Bhatewara <sbhatewara@vmware.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

7 years agol2tp: fix oops in l2tp_eth_create() error path
Tom Parkin [Mon, 29 Oct 2012 23:41:48 +0000]
l2tp: fix oops in l2tp_eth_create() error path

When creating an L2TPv3 Ethernet session, if register_netdev() should fail for
any reason (for example, automatic naming for "l2tpeth%d" interfaces hits the
32k-interface limit), the netdev is freed in the error path.  However, the
l2tp_eth_sess structure's dev pointer is left uncleared, and this results in
l2tp_eth_delete() then attempting to unregister the same netdev later in the
session teardown.  This results in an oops.

To avoid this, clear the session dev pointer in the error path.

Signed-off-by: Tom Parkin <tparkin@katalix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

7 years agoexynos4_tmu_driver_ids should be exynos_tmu_driver_ids.
Jonghwan Choi [Tue, 23 Oct 2012 06:54:42 +0000]
exynos4_tmu_driver_ids should be exynos_tmu_driver_ids.

Signed-off-by: Jonghwan Choi <jhbird.choi@samsung.com>
Reviewed-by: Amit Daniel Kachhap <amit.kachhap@linaro.org>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>

7 years agoACPI video: Ignore errors after _DOD evaluation.
Igor Murzov [Sat, 13 Oct 2012 00:41:25 +0000]
ACPI video: Ignore errors after _DOD evaluation.

There are systems where video module known to work fine regardless
of broken _DOD and ignoring returned value here doesn't cause
any issues later. This should fix brightness controls on some laptops.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=47861

Signed-off-by: Igor Murzov <e-mail@date.by>
Reviewed-by: Sergey V <sftp.mtuci@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>

7 years agothermal: solve compilation errors in rcar_thermal
Devendra Naga [Wed, 31 Oct 2012 08:46:10 +0000]
thermal: solve compilation errors in rcar_thermal

following were the errors reported

drivers/thermal/rcar_thermal.c: In function ‘rcar_thermal_probe’:
drivers/thermal/rcar_thermal.c:214:10: warning: passing argument 3 of ‘thermal_zone_device_register’ makes integer from pointer without a cast [enabled by default]
include/linux/thermal.h:166:29: note: expected ‘int’ but argument is of type ‘struct rcar_thermal_priv *’
drivers/thermal/rcar_thermal.c:214:10: error: too few arguments to function ‘thermal_zone_device_register’
include/linux/thermal.h:166:29: note: declared here
make[1]: *** [drivers/thermal/rcar_thermal.o] Error 1
make: *** [drivers/thermal/rcar_thermal.o] Error 2

with gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5)

Signed-off-by: Devendra Naga <develkernel412222@gmail.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>

7 years agocxgb4: Fix unable to get UP event from the LLD
Vipul Pandya [Mon, 29 Oct 2012 02:02:36 +0000]
cxgb4: Fix unable to get UP event from the LLD

If T4 configuration file gets loaded from the /lib/firmware/cxgb4/ directory
then offload capabilities of the cards were getting disabled during
initialization. Hence ULDs do not get an UP event from the LLD.

Signed-off-by: Jay Hernandez <jay@chelsio.com>
Signed-off-by: Vipul Pandya <vipul@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

7 years agodrivers/net/phy/mdio-bitbang.c: Call mdiobus_unregister before mdiobus_free
Peter Senna Tschudin [Sun, 28 Oct 2012 06:12:01 +0000]
drivers/net/phy/mdio-bitbang.c: Call mdiobus_unregister before mdiobus_free

Based on commit b27393aecf66199f5ddad37c302d3e0cfadbe6c0

Calling mdiobus_free without calling mdiobus_unregister causes
BUG_ON(). This patch fixes the issue.

The semantic patch that found this issue(http://coccinelle.lip6.fr/):
// <smpl>
@@
expression E;
@@
  ... when != mdiobus_unregister(E);

+ mdiobus_unregister(E);
  mdiobus_free(E);
// </smpl>

Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

7 years agodrivers/net/ethernet/nxp/lpc_eth.c: Call mdiobus_unregister before mdiobus_free
Peter Senna Tschudin [Sun, 28 Oct 2012 06:12:00 +0000]
drivers/net/ethernet/nxp/lpc_eth.c: Call mdiobus_unregister before mdiobus_free

Based on commit b27393aecf66199f5ddad37c302d3e0cfadbe6c0

Calling mdiobus_free without calling mdiobus_unregister causes
BUG_ON(). This patch fixes the issue.

The semantic patch that found this issue(http://coccinelle.lip6.fr/):
// <smpl>
@@
expression E;
@@
  ... when != mdiobus_unregister(E);

+ mdiobus_unregister(E);
  mdiobus_free(E);
// </smpl>

Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
Tested-by: Roland Stigge <stigge@antcom.de>
Tested-by: Alexandre Pereira da Silva <aletes.xgr@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

7 years agobnx2x: fix HW initialization using fw 7.8.x
Dmitry Kravkov [Sun, 28 Oct 2012 21:59:04 +0000]
bnx2x: fix HW initialization using fw 7.8.x

Since commit 96bed4b9 (use FW 7.8.2) BRB HW block needs to be
initialized using fw values for all devices.
Otherwise ETS on 57712/578xx will not work.

Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: Ariel Elior <ariele@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

7 years agoMerge tag 'pm-for-3.7-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael...
Linus Torvalds [Fri, 2 Nov 2012 23:56:39 +0000]
Merge tag 'pm-for-3.7-rc4' of git://git./linux/kernel/git/rafael/linux-pm

Pull power management update from Rafael J. Wysocki:
 "Change the email address of the powernow-k8 maintainer."

* tag 'pm-for-3.7-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  cpufreq / powernow-k8: Change maintainer's email address

7 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Linus Torvalds [Fri, 2 Nov 2012 23:11:15 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/dtor/input

Pull input subsystem fixes from Dmitry Torokhov:
 "Just a few driver fixes."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: tsc40 - remove wrong announcement of pressure support
  Input: lpc32xx-keys - select INPUT_MATRIXKMAP
  Input: pxa27x_keypad - clear pending interrupts on keypad config
  Input: wacom - correct bad Cintiq 24HD check
  Input: wacom - add INPUT_PROP_DIRECT flag to Cintiq 24HD
  Input: egalax_ts - get gpio from devicetree

7 years agoNFS4: nfs4_opendata_access should return errno
Weston Andros Adamson [Fri, 2 Nov 2012 22:00:56 +0000]
NFS4: nfs4_opendata_access should return errno

Return errno - not an NFS4ERR_. This worked because NFS4ERR_ACCESS == EACCES.

Signed-off-by: Weston Andros Adamson <dros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

7 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending
Linus Torvalds [Fri, 2 Nov 2012 22:08:20 +0000]
Merge git://git./linux/kernel/git/nab/target-pending

Pull more scsi target fixes from Nicholas Bellinger:
 "This series is a second round of target fixes for v3.7-rc4 that have
  come into target-devel over the last days, and are important enough to
  be applied ASAP.

  All are being CC'ed to stable.  The most important two are:

   - target: Re-add explict zeroing of INQUIRY bounce buffer memory to
     fix a regression for handling zero-length payloads, a bug that went
     during v3.7-rc1, and hit >= v3.6.3 stable.  (nab + paolo)

   - iscsi-target: Fix a long-standing missed R2T wakeup race in TX
     thread processing when using a single queue slot.  (Roland)

  Thanks to Roland & PureStorage team for helping to track down this
  long standing race with iscsi-target single queue slot operation.

  Also, the tcm_fc(FCoE) regression bug that was observed recently with
  -rc2 code has also been resolved with the cancel_delayed_work() return
  bugfix (commit c0158ca64da5: "workqueue: cancel_delayed_work() should
  return %false if work item is idle") now in -rc3.  Thanks again to Yi
  Zou, MDR, Robert Love @ Intel for helping to track this down."

* git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending:
  target: Fix incorrect usage of nested IRQ spinlocks in ABORT_TASK path
  iscsi-target: Fix missed wakeup race in TX thread
  target: Avoid integer overflow in se_dev_align_max_sectors()
  target: Don't return success from module_init() if setup fails
  target: Re-add explict zeroing of INQUIRY bounce buffer memory

7 years agoMerge tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck...
Linus Torvalds [Fri, 2 Nov 2012 20:27:52 +0000]
Merge tag 'hwmon-for-linus' of git://git./linux/kernel/git/groeck/linux-staging

Pull hwmon fixes from Guenter Roeck:
 "An e-mail address update, and fix a compile error on SPARC"

* tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  hwmon: Only include of_match_table with CONFIG_OF_GPIO
  hwmon, fam15h_power: Change email address, MAINTAINERS entry

7 years agoMerge tag 'frv-fixes-20121102' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowe...
Linus Torvalds [Fri, 2 Nov 2012 20:27:01 +0000]
Merge tag 'frv-fixes-20121102' of git://git./linux/kernel/git/dhowells/linux-frv

Pull FRV fixes from David Howells:
 "A collection of small fixes for the FRV architecture."

* tag 'frv-fixes-20121102' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-frv:
  frv: fix the broken preempt
  frv: switch to saner kernel_execve() semantics
  FRV: Fix the new-style kernel_thread() stuff
  FRV: Fix the preemption handling
  FRV: gcc-4.1.2 also inlines weak functions
  FRV: Don't objcopy the GNU build_id note
  FRV: Add missing linux/export.h #inclusions

7 years agoMerge tag 'stable/for-linus-3.7-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 2 Nov 2012 20:26:11 +0000]
Merge tag 'stable/for-linus-3.7-rc4-tag' of git://git./linux/kernel/git/konrad/xen

Pull Xen bugfixes from Konrad Rzeszutek Wilk:
 - Use appropriate macros instead of hand-rolling our own (ARM).
 - Fixes if FB/KBD closed unexpectedly.
 - Fix memory leak in /dev/gntdev ioctl calls.
 - Fix overflow check in xenbus_file_write.
 - Document cleanup.
 - Performance optimization when migrating guests.

* tag 'stable/for-linus-3.7-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
  xen/mmu: Use Xen specific TLB flush instead of the generic one.
  xen/arm: use the __HVC macro
  xen/xenbus: fix overflow check in xenbus_file_write()
  xen-kbdfront: handle backend CLOSED without CLOSING
  xen-fbfront: handle backend CLOSED without CLOSING
  xen/gntdev: don't leak memory from IOCTL_GNTDEV_MAP_GRANT_REF
  x86: remove obsolete comment from asm/xen/hypervisor.h

7 years agohashtable: introduce a small and naive hashtable
Sasha Levin [Tue, 30 Oct 2012 18:45:57 +0000]
hashtable: introduce a small and naive hashtable

This hashtable implementation is using hlist buckets to provide a simple
hashtable to prevent it from getting reimplemented all over the kernel.

Signed-off-by: Sasha Levin <levinsasha928@gmail.com>
[ Merging this now, so that subsystems can start applying Sasha's
  patches that use this   - Linus ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

7 years agofrv: fix the broken preempt
Al Viro [Fri, 2 Nov 2012 16:05:44 +0000]
frv: fix the broken preempt

Just get %icc2 into the state we would have after local_irq_disable()
and physical IRQ having happened since then.  Then we can simply
use preempt_schedule_irq() and be done with the whole mess.

Acked-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

7 years agofrv: switch to saner kernel_execve() semantics
Al Viro [Mon, 15 Oct 2012 14:53:17 +0000]
frv: switch to saner kernel_execve() semantics

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

7 years agoFRV: Fix the new-style kernel_thread() stuff
David Howells [Fri, 2 Nov 2012 13:20:43 +0000]
FRV: Fix the new-style kernel_thread() stuff

The kernel_thread() changes for FRV don't work, and FRV fails to boot,
starting with:

commit 02ce496f152df87be081a64796498942c433a2fd
Author: Al Viro <viro@zeniv.linux.org.uk>
Date:   Tue Sep 18 22:18:51 2012 -0400
Subject: frv: split ret_from_fork, simplify kernel_thread() a lot

The problem is that the userspace registers are completely cleared when a
kernel thread is created and all subsequent user threads are then copied from
that.  Unfortunately, however, the TBR and PSR registers are restored from the
pt_regs and the values they should be set to are clobbered by the memset.

Instead, copy across the old user registers as normal, and then merely alter
GR8 and GR9 in it if we're going to execute a kernel thread.

Signed-off-by: David Howells <dhowells@redhat.com>

7 years agoFRV: Fix the preemption handling
David Howells [Fri, 2 Nov 2012 13:20:42 +0000]
FRV: Fix the preemption handling

Fix the preemption handling in FRV code where the PREEMPT_ACTIVE value is
incorrectly loaded into the threadinfo flags rather than the threadinfo
preemption count.

Unfortunately, the code cannot be simply converted to use
preempt_schedule_irq() as is because FRV uses virtual interrupt disablement to
cut down on the cost of actually disabling interrupts and thus
local_irq_enable() doesn't actually enable interrupts.

Reported-by: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Al Viro <viro@ZenIV.linux.org.uk>

7 years agoFRV: gcc-4.1.2 also inlines weak functions
David Howells [Fri, 2 Nov 2012 13:20:42 +0000]
FRV: gcc-4.1.2 also inlines weak functions

gcc-4.1.2 inlines weak functions, which causes FRV to fail when the dummy
thread_info_cache_init() gets inlined into start_kernel().

Signed-off-by: David Howells <dhowells@redhat.com>

7 years agoFRV: Don't objcopy the GNU build_id note
David Howells [Fri, 2 Nov 2012 13:20:42 +0000]
FRV: Don't objcopy the GNU build_id note

Don't let objcopy transfer the GNU build_id note into the loadable image as it
is located at address 0 and the image ends up >3G in size.

Signed-off-by: David Howells <dhowells@redhat.com>

7 years agoFRV: Add missing linux/export.h #inclusions
David Howells [Fri, 2 Nov 2012 13:20:42 +0000]
FRV: Add missing linux/export.h #inclusions

Add missing linux/export.h #inclusions to the FRV arch.

Signed-off-by: David Howells <dhowells@redhat.com>

7 years agoi2c: tegra: set irq name as device name
Laxman Dewangan [Thu, 1 Nov 2012 16:38:14 +0000]
i2c: tegra: set irq name as device name

When watching the irqs name of tegra i2c, all instances
irq name shows as tegra_i2c.

Passing the device name properly to have the irq names with
instance like tegra-i2c.0, tegra-i2c.1 etc.

Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>

7 years agoi2c-nomadik: Fixup clock handling
Philippe Begnic [Wed, 10 Oct 2012 11:02:26 +0000]
i2c-nomadik: Fixup clock handling

Make sure to clk_prepare as well as clk_enable.

Signed-off-by: Philippe Begnic <philippe.begnic@stericsson.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>

7 years agoi2c: mxs: remove broken PIOQUEUE support
Wolfram Sang [Fri, 12 Oct 2012 10:55:16 +0000]
i2c: mxs: remove broken PIOQUEUE support

This I2C master can do DMA and PIOQUEUE (PIO with FIFO). Originally,
only PIOQUEUE was supported and it had issues, then DMA support was added
this cycle. The original intention was to keep PIOQUEUE since it has
less overhead what is nice for small transfers. However, runtime
switching between PIOQEUE and DMA depending on the transfer size never
worked despite a lot of trying. Since PIOQUEUE mode itself was flaky
(polling at places where interrupts failed to work) and the
implementation also imposed a size limit for transfers, it is best to
remove the support, so users don't fall over its limitations. It also
makes the driver a lot cleaner and more robust. If somebody really wants
less overhead, plain PIO mode could still be implemented with the
addidtional advantage that this mode is also available on MX23, too.

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Reviewed-by: Marek Vasut <marex@denx.de>

7 years agoMerge tag 'xtensa-next-20121101' of git://github.com/czankel/xtensa-linux
Linus Torvalds [Fri, 2 Nov 2012 00:48:19 +0000]
Merge tag 'xtensa-next-20121101' of git://github.com/czankel/xtensa-linux

Pull Xtensa fixes from Chris Zankel:
 "Some important bug fixes.

  With the change to uapi, there was a bug introduced that results in an
  empty syscall table (mult-inclusion bug).  Switching to the generic
  thread/execve allowed us to fix a bug we had in vfork()."

* tag 'xtensa-next-20121101' of git://github.com/czankel/xtensa-linux:
  xtensa: switch to generic sys_execve()
  xtensa: switch to generic kernel_execve()
  xtensa: switch to generic kernel_thread()
  xtensa: reset windowbase/windowstart when cloning the VM
  xtensa: use physical addresses for bus addresses
  xtensa: allow multi-inclusion for uapi/unistd.h

7 years agodrm/udl: fix stride issues scanning out stride != width*bpp
Dave Airlie [Thu, 1 Nov 2012 03:47:09 +0000]
drm/udl: fix stride issues scanning out stride != width*bpp

When buffer sharing with the i915 and using a 1680x1050 monitor,
the i915 gives is a 6912 buffer for the 6720 width, the code doesn't
render this properly as it uses one value to set the base address for
reading from the vmap and for where to start on the device.

This fixes it by calculating the values correctly for the device and
for the pixmap. No idea how I haven't seen this before now.

Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>

7 years agohwmon: Only include of_match_table with CONFIG_OF_GPIO
Jamie Lentin [Thu, 1 Nov 2012 23:55:43 +0000]
hwmon: Only include of_match_table with CONFIG_OF_GPIO

The following fixes build errors on sparc. Without any DT support,
of_match_ptr is NULL and the below is a no-op. However, if just
CONFIG_OF is defined then so is of_match_ptr.

All useful parts of the gpio-fan DT support rely on CONFIG_OF_GPIO
anyway, so of_match_table should too.

Signed-off-by: Jamie Lentin <jm@lentin.co.uk>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

7 years agoMerge branch 'exynos-drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git...
Dave Airlie [Fri, 2 Nov 2012 00:30:37 +0000]
Merge branch 'exynos-drm-fixes' of git://git./linux/kernel/git/daeinki/drm-exynos into drm-fixes

Inki writes:
"As I posted before, we have added a new git repository for Exynos drm
to MAINTAINERS file so change it to new one like below,
   from git://git.infradead.org/users/kmpark/linux-samsung
   to git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos

And this pull request includes the following:
- fix display on issue when user requested dpms mode changing.
- add git repository for Exynos drm to MAINTAINERS file.
- add support for ARCH_MULTIPLATFORM.
- and code clean."

* 'exynos-drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos:
  drm: exynos: removed warning due to missing typecast for mixer driver data
  drm/exynos: add support for ARCH_MULTIPLATFORM
  MAINTAINERS: Add git repository for Exynos DRM
  drm/exynos: fix display on issue

7 years agoMerge branch 'drm-fixes-3.7' of git://people.freedesktop.org/~agd5f/linux into drm...
Dave Airlie [Fri, 2 Nov 2012 00:29:22 +0000]
Merge branch 'drm-fixes-3.7' of git://people.freedesktop.org/~agd5f/linux into drm-fixes

Alex writes:
"This request is mostly load detection fixes from Egbert and me."

* 'drm-fixes-3.7' of git://people.freedesktop.org/~agd5f/linux:
  drm/radeon: add load detection support for ext DAC on R200 (v2)
  DRM/radeon: For single CRTC GPUs move handling of CRTC_CRT_ON to crtc_dpms().
  DRM/Radeon: Fix TV DAC Load Detection for single CRTC chips.
  DRM/Radeon: Clean up code in TV DAC load detection.
  drm/radeon: fix ATPX function documentation
  drivers/gpu/drm/radeon/evergreen_cs.c: Remove unnecessary semicolon
  DRM/Radeon: On DVI-I use Load Detection when EDID is bogus.
  DRM/Radeon: Fix primary DAC Load Detection for RV100 chips.
  DRM/Radeon: Fix Load Detection on legacy primary DAC.

7 years agoMerge branch 'drm-intel-fixes' of git://people.freedesktop.org/~danvet/drm-intel...
Dave Airlie [Fri, 2 Nov 2012 00:26:03 +0000]
Merge branch 'drm-intel-fixes' of git://people.freedesktop.org/~danvet/drm-intel into drm-fixes

Daniel Vetter writes"
Nothing big at all for -fixes, just small stuff:
- Two patches to fix bugs on i830M
- ums regression fixer due to kicking firmeware fbs (Chris)
- tune down a too loud warning (Jani)
- be more careful with sdvo infoframes, which fixes a long-standing
  sdvo-hdmi regression"

* 'drm-intel-fixes' of git://people.freedesktop.org/~danvet/drm-intel:
  drm/i915: Only kick out vesafb if we takeover the fbcon with KMS
  drm/i915: be less verbose about inability to provide vendor backlight
  drm/i915: clear the entire sdvo infoframe buffer
  drm/i915: VGA needs to be on pipe A on i830M
  drm/i915: fix overlay on i830M

7 years agoNFSv4: Initialise the NFSv4.1 slot table highest_used_slotid correctly
Trond Myklebust [Mon, 29 Oct 2012 20:48:40 +0000]
NFSv4: Initialise the NFSv4.1 slot table highest_used_slotid correctly

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

7 years agotcp: Fix double sizeof in new tcp_metrics code
Julian Anastasov [Tue, 30 Oct 2012 12:03:09 +0000]
tcp: Fix double sizeof in new tcp_metrics code

Fix double sizeof when parsing IPv6 address from
user space because it breaks get/del by specific IPv6 address.

Problem noticed by David Binderman:

https://bugzilla.kernel.org/show_bug.cgi?id=49171

Signed-off-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: David S. Miller <davem@davemloft.net>

7 years agonet: fix divide by zero in tcp algorithm illinois
Jesper Dangaard Brouer [Wed, 31 Oct 2012 02:45:32 +0000]
net: fix divide by zero in tcp algorithm illinois

Reading TCP stats when using TCP Illinois congestion control algorithm
can cause a divide by zero kernel oops.

The division by zero occur in tcp_illinois_info() at:
 do_div(t, ca->cnt_rtt);
where ca->cnt_rtt can become zero (when rtt_reset is called)

Steps to Reproduce:
 1. Register tcp_illinois:
     # sysctl -w net.ipv4.tcp_congestion_control=illinois
 2. Monitor internal TCP information via command "ss -i"
     # watch -d ss -i
 3. Establish new TCP conn to machine

Either it fails at the initial conn, or else it needs to wait
for a loss or a reset.

This is only related to reading stats.  The function avg_delay() also
performs the same divide, but is guarded with a (ca->cnt_rtt > 0) at its
calling point in update_params().  Thus, simply fix tcp_illinois_info().

Function tcp_illinois_info() / get_info() is called without
socket lock.  Thus, eliminate any race condition on ca->cnt_rtt
by using a local stack variable.  Simply reuse info.tcpv_rttcnt,
as its already set to ca->cnt_rtt.
Function avg_delay() is not affected by this race condition, as
its called with the socket lock.

Cc: Petr Matousek <pmatouse@redhat.com>
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Acked-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

7 years agonet: sctp: Fix typo in net/sctp
Masanari Iida [Wed, 31 Oct 2012 05:48:19 +0000]
net: sctp: Fix typo in net/sctp

Correct spelling typo in net/sctp/socket.c

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

7 years agobonding: fix second off-by-one error
nikolay@redhat.com [Wed, 31 Oct 2012 06:03:52 +0000]
bonding: fix second off-by-one error

Fix off-by-one error because IFNAMSIZ == 16 and when this
code gets executed we stick a NULL byte where we should not.

How to reproduce:
 with CONFIG_CC_STACKPROTECTOR=y (otherwise it may pass by silently)
 modprobe bonding; echo 1 > /sys/class/net/bond0/bonding/mode;
 echo "AAAAAAAAAAAAAAAA" > /sys/class/net/bond0/bonding/active_slave;

Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com>

Note: Sorry for the second patch but I missed this one while checking
      the file. You can squash them into one patch.
Signed-off-by: David S. Miller <davem@davemloft.net>

7 years agobonding: fix off-by-one error
nikolay@redhat.com [Wed, 31 Oct 2012 04:42:51 +0000]
bonding: fix off-by-one error

Fix off-by-one error because IFNAMSIZ == 16 and when this
code gets executed we stick a NULL byte where we should not.

How to reproduce:
 with CONFIG_CC_STACKPROTECTOR=y (otherwise it may pass by silently)
 modprobe bonding; echo 1 > /sys/class/net/bond0/bonding/mode;
 echo "AAAAAAAAAAAAAAAA" > /sys/class/net/bond0/bonding/primary;

Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

7 years agoSUNRPC: return proper errno from backchannel_rqst
Weston Andros Adamson [Thu, 1 Nov 2012 15:21:53 +0000]
SUNRPC: return proper errno from backchannel_rqst

The one and only caller (in fs/nfs/nfs4client.c) uses the result
as an errno and would have interpreted an error as EPERM.

Signed-off-by: Weston Andros Adamson <dros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

7 years agobnx2x: Disable FCoE for 57840 since not yet supported by FW
Dmitry Kravkov [Wed, 31 Oct 2012 05:46:58 +0000]
bnx2x: Disable FCoE for 57840 since not yet supported by FW

Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

7 years agobnx2x: Fix no link on 577xx 10G-baseT
Yaniv Rosner [Wed, 31 Oct 2012 05:46:57 +0000]
bnx2x: Fix no link on 577xx 10G-baseT

Since the Warpcore supports various link types, need to set only the correct
supported modes for XFI which is the serdes interface for the 10G-baseT PHY.

Signed-off-by: Yaniv Rosner <yanivr@broadcom.com>
Signed-off-by: Barak Witkowski <barak@broadcom.com>
Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

7 years agobnx2x: Fix unrecognized SFP+ module after driver is loaded
Yaniv Rosner [Wed, 31 Oct 2012 05:46:56 +0000]
bnx2x: Fix unrecognized SFP+ module after driver is loaded

When SFP+ module is plugged in after driver is already loaded, it may not be
recognized, so set SFP module recognition time up to 300ms, without resetting
the module power in the middle.

Signed-off-by: Yaniv Rosner <yanivr@broadcom.com>
Signed-off-by: Barak Witkowski <barak@broadcom.com>
Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

7 years agobnx2x: Fix potential incorrect link speed provision
Yaniv Rosner [Wed, 31 Oct 2012 05:46:55 +0000]
bnx2x: Fix potential incorrect link speed provision

Fix possible incorrect link speed provision following rapid link speed change.
Clear link speed mask after each link change, and not only after link down.

Signed-off-by: Yaniv Rosner <yanivr@broadcom.com>
Signed-off-by: Barak Witkowski <barak@broadcom.com>
Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

7 years agobnx2x: Restore global registers back to default.
Yaniv Rosner [Wed, 31 Oct 2012 05:46:54 +0000]
bnx2x: Restore global registers back to default.

Several KR registers were not set correctly back to default after
loopback test, so set those global registers over the global WC lane (zero)
rather than the current lane.

Signed-off-by: Yaniv Rosner <yanivr@broadcom.com>
Signed-off-by: Barak Witkowski <barak@broadcom.com>
Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

7 years agobnx2x: Fix link down in 57712 following LFA
Yaniv Rosner [Wed, 31 Oct 2012 05:46:53 +0000]
bnx2x: Fix link down in 57712 following LFA

In case of link flap avoidance between PXE boot and bnx2x, set the appropriate
PHY DEVAD even if LFA kicks in.

Signed-off-by: Yaniv Rosner <yanivr@broadcom.com>
Signed-off-by: Barak Witkowski <barak@broadcom.com>
Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

7 years agobnx2x: Fix 57810 1G-KR link against certain switches.
Yaniv Rosner [Wed, 31 Oct 2012 05:46:52 +0000]
bnx2x: Fix 57810 1G-KR link against certain switches.

Fix 1G KR link by restoring CL72 misc control register to default value rather
than 0.

Signed-off-by: Yaniv Rosner <yanivr@broadcom.com>
Signed-off-by: Barak Witkowski <barak@broadcom.com>
Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

7 years agoMerge git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Thu, 1 Nov 2012 15:27:02 +0000]
Merge git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull KVM fix from Marcelo Tosatti.

* git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: x86: fix vcpu->mmio_fragments overflow

7 years agoixgbe: PTP get_ts_info missing software support
Jacob Keller [Wed, 31 Oct 2012 22:30:54 +0000]
ixgbe: PTP get_ts_info missing software support

This patch corrects the ethtool get_ts_info functon which did not state that
software timestamping was supported, even though it is.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
CC: Stable <stable@vger.kernel.org> [3.5]
Tested-by: Stephen Ko <stephen.s.ko@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

7 years agodrm/radeon: add load detection support for ext DAC on R200 (v2)
Alex Deucher [Wed, 31 Oct 2012 15:51:03 +0000]
drm/radeon: add load detection support for ext DAC on R200 (v2)

The R200 asics use an external DAC for the secondary DAC.
The current KMS code tries to use code for the integrated
TV DAC for R200 which leads to unpredictable results since
R200 does not have an integrated TV DAC. This patch ports
the external DAC load detection support from the UMS
driver to KMS.

v2: fix typo in loop break logic

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Egbert Eich <eich@suse.de>

7 years agoDRM/radeon: For single CRTC GPUs move handling of CRTC_CRT_ON to crtc_dpms().
Egbert Eich [Mon, 29 Oct 2012 12:46:48 +0000]
DRM/radeon: For single CRTC GPUs move handling of CRTC_CRT_ON to crtc_dpms().

On all dual CRTC GPUs the CRTC_CRT_ON in the RADEON_CRTC_EXT_CNTL register
 controls the CRTC of the primary DAC. Therefore it is set in the DAC DMPS
function.
This is different for GPU's with a single CRTC but a primary and a
TV DAC: here it controls the single CRTC no matter where it is routed.
Therefore we set it here. This avoids an elaborate on/off state tracking
since both primary_dac_dpms() and tv_dac_dpms() functions would have
to touch this bit.
On single CRTC GPUs with just one DAC it's irrelevant where this bit
is handled.

agd5f: fix warning

Signed-off-by: Egbert Eich <eich@suse.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

7 years agoDRM/Radeon: Fix TV DAC Load Detection for single CRTC chips.
Egbert Eich [Tue, 30 Oct 2012 16:42:27 +0000]
DRM/Radeon: Fix TV DAC Load Detection for single CRTC chips.

The RN50 has a TV DAC but only a single CRTC. For load detection this
DAC is controlled by the primary CRTC.

Signed-off-by: Egbert Eich <eich@suse.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

7 years agoDRM/Radeon: Clean up code in TV DAC load detection.
Egbert Eich [Tue, 30 Oct 2012 16:42:26 +0000]
DRM/Radeon: Clean up code in TV DAC load detection.

Signed-off-by: Egbert Eich <eich@suse.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

7 years agodrm/radeon: fix ATPX function documentation
Igor Murzov [Thu, 25 Oct 2012 13:09:00 +0000]
drm/radeon: fix ATPX function documentation

Fix a copy&pasted documentation.

Signed-off-by: Igor Murzov <e-mail@date.by>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

7 years agodrivers/gpu/drm/radeon/evergreen_cs.c: Remove unnecessary semicolon
Peter Senna Tschudin [Wed, 24 Oct 2012 14:42:26 +0000]
drivers/gpu/drm/radeon/evergreen_cs.c: Remove unnecessary semicolon

A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@r1@
statement S;
position p,p1;
@@
S@p1;@p

@script:python r2@
p << r1.p;
p1 << r1.p1;
@@
if p[0].line != p1[0].line_end:
        cocci.include_match(False)
@@
position r1.p;
@@
-;@p
// </smpl>

Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

7 years agoDRM/Radeon: On DVI-I use Load Detection when EDID is bogus.
Egbert Eich [Wed, 24 Oct 2012 16:32:52 +0000]
DRM/Radeon: On DVI-I use Load Detection when EDID is bogus.

The Radeon driver uses the analog/digital flag to determine if the
DAC or the TMDS encoder should be enabled on a DVI-I connector.
If the EDID is bogus this flag is no longer reliable. This fix
adds a fallback to DAC load detection to determine if anything
is connected to the DAC. If not and a (bogus) EDID is found it
assumes a digital display is connected.
This works around problems with some crappy IPMI devices using
Radeon ES1000.

Signed-off-by: Egbert Eich <eich@suse.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

7 years agoDRM/Radeon: Fix primary DAC Load Detection for RV100 chips.
Egbert Eich [Wed, 24 Oct 2012 16:31:19 +0000]
DRM/Radeon: Fix primary DAC Load Detection for RV100 chips.

For Radeon 7500 ATI recommends a DAC_FORCE value of 0x1ac. This value
works better on ES1000 (RV100) chips, too, as it doesn't produce any false
positives on any cards I have tested. Therefore let's assume that this
value is good for all RV100 and RV200 chipset generations.

Signed-off-by: Egbert Eich <eich@suse.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>