e1000e: disable ASPM L1 on 82573
authorBruce Allan <bruce.w.allan@intel.com>
Thu, 19 Aug 2010 22:48:30 +0000 (15:48 -0700)
committerDavid S. Miller <davem@davemloft.net>
Thu, 19 Aug 2010 22:48:30 +0000 (15:48 -0700)
commit19833b5dffe2f2e92a1b377f9aae9d5f32239512
tree4aa82c89c6e6035acd3f08f4a161fcd83cd7c596
parent8539992f6091eb8206c781421312157d0c282e6e
e1000e: disable ASPM L1 on 82573

On the e1000-devel mailing list, Nils Faerber reported latency issues with
the 82573 LOM on a ThinkPad X60.  It was found to be caused by ASPM L1;
disabling it resolves the latency.  The issue is present in kernels back
to 2.6.34 and possibly 2.6.33.

Reported-by: Nils Faerber <nils.faerber@kernelconcepts.de>
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Cc: stable@kernel.org
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/e1000e/82571.c