[PATCH 0/2][SRU][B/F/OEM-B/OEM-OSP1-B/OEM-5.6] Fix System stops responding while entering S3 with SD card installed
shane.lin at canonical.com
Fri Jul 10 08:53:39 UTC 2020
The system stops responding while entering S3, screen will be lit up
if touchpad is triggered by finger. Cursor could be seen with black background,
but system is not responding to any input.
Patchset for fix this issue currently landed in upstream,
so we backported them:
b3d71abd135e xhci: Poll for U0 after disabling USB2 LPM
f0c472a6da51 xhci: Return if xHCI doesn't support LPM
With the above patch applied, run:
sudo fwts --s3-sleep-delay=30 --s3-multiple=30 -p s3
Can passed 30 times.
Low, the patch is just like a safeguard,
doesn't really change any behavior.
Kai-Heng Feng (2):
xhci: Return if xHCI doesn't support LPM
xhci: Poll for U0 after disabling USB2 LPM
drivers/usb/host/xhci.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
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