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

[Tim Gardner]

Acked-by: Tim Gardner <tim.gardner at canonical.com>

Ack for mainline as well

On 8/18/21 10:05 PM, Hui Wang wrote:
> 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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Tim Gardner
Canonical, Inc