Messages in this thread Patch in this message | | | Date | Tue, 24 Aug 2010 15:42:30 -0700 | From | Greg KH <> | Subject | [68/91] e1000e: disable ASPM L1 on 82573 |
| |
2.6.34-stable review patch. If anyone has any objections, please let us know.
------------------
From: Bruce Allan <bruce.w.allan@intel.com>
commit 19833b5dffe2f2e92a1b377f9aae9d5f32239512 upstream.
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> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
--- drivers/net/e1000e/82571.c | 1 + 1 file changed, 1 insertion(+)
--- a/drivers/net/e1000e/82571.c +++ b/drivers/net/e1000e/82571.c @@ -1826,6 +1826,7 @@ 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,
| |