From 19833b5dffe2f2e92a1b377f9aae9d5f32239512 Mon Sep 17 00:00:00 2001 From: Bruce Allan Date: Thu, 19 Aug 2010 15:48:30 -0700 Subject: [PATCH] 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 Signed-off-by: Bruce Allan Cc: stable@kernel.org Signed-off-by: Jeff Kirsher Signed-off-by: David S. Miller --- drivers/net/e1000e/82571.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/e1000e/82571.c b/drivers/net/e1000e/82571.c index a4a0d2b..f844e6c 100644 --- a/drivers/net/e1000e/82571.c +++ b/drivers/net/e1000e/82571.c @@ -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, -- 2.7.4