Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 19833b5d authored by Bruce Allan's avatar Bruce Allan Committed by David S. Miller
Browse files

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: default avatarNils Faerber <nils.faerber@kernelconcepts.de>
Signed-off-by: default avatarBruce Allan <bruce.w.allan@intel.com>
Cc: stable@kernel.org
Signed-off-by: default avatarJeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 8539992f

drivers/net/e1000e/82571.c

+1 −0
Original line number Diff line number Diff line
@@ -1833,6 +1833,7 @@ struct e1000_info e1000_82573_info = { 
				  | FLAG_HAS_SMART_POWER_DOWN

				  | FLAG_HAS_AMT

				  | FLAG_HAS_SWSM_ON_LOAD,

	.flags2			= FLAG2_DISABLE_ASPM_L1,

	.pba			= 20,

	.max_hw_frame_size	= ETH_FRAME_LEN + ETH_FCS_LEN,

	.get_variants		= e1000_get_variants_82571,