[SRU][Bionic/dell300x][PATCH 0/1] dell300x: rsi wifi and bluetooth crash after suspend and resume

[Hui Wang]

BugLink: https://bugs.launchpad.net/bugs/1940488

I tested the upstream stable kernel 4.19.191, also could reproduce
this issue, and reported this testing result to stable mail list.


[Impact]
On the Dell300x machine, after system suspend and resume, the wifi
and bluetooth can't work anymore.

[Fix]
Revert a patch which was applied to bionic kernel from stable update.

[Test]
Booting up with the patched kernel, run $sudo rtcwake -m freeze -s 10,
then check dmesg to make sure there is crashing log, and run 'nmcli d
wifi' and 'bluetoothctl, power on, scan on', all worked well.

[Where problems could occur]
After applying this SRU, the rsi wifi and bluetooth could have come
change, like wifi and bluetooth can't work well after resume, but this
possibility is very low, I already run '$sudo rtcwake -m freeze -s 10'
for 50 times, the wifi and bluetooth still worked well.


Hui Wang (1):
  Revert "rsi: Use resume_noirq for SDIO"

 drivers/net/wireless/rsi/rsi_91x_sdio.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

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2.25.1