[SRU] [F/G/Unstable/OEM-5.6] [PATCH 0/1] Fix broken e1000e device after S3

Kai-Heng Feng kai.heng.feng at canonical.com
Tue Sep 29 15:07:03 UTC 2020

BugLink: https://bugs.launchpad.net/bugs/1897755

Intel I219 ethernet on several HP workstations has a chance to stop
working after S3.

Increase polling timeout on MDIC ready bit so we wait a bit longer for
Intel ME.

Without the fix, the I219 ethernet breaks in 10 S3 cycle.
With the fix applied, the ethernet keeps working after 1000+ S3 stress

[Regression Potential]
If the firmware/hardware is _really_ broken, we'll waste a bit more time
to wait the device resume. Otherwise no functional change.

Kai-Heng Feng (1):
  e1000e: Increase polling timeout on MDIC ready bit

 drivers/net/ethernet/intel/e1000e/phy.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)


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