[PATCH 2/2] mt76: mt7921: reduce the mutex lock scope during reset

[AngeloGioacchino Del Regno]

Il 23/06/22 02:35, sean.wang at mediatek.com ha scritto:
> From: Sean Wang <sean.wang at mediatek.com>
> 
> Reduce the mutex lock scope for reset to get rid of possible task hung
> e.g wpa_supplicant and to allow the user-space process to keep running
> during we need more retries to complete the reset.
> 

To actually, effectively, reduce the chance to get a hung task, and also
to improve the general responsiveness, I think that the best way would be
to manage the locking inside of the reset callback(s) for each dev/bus.

This is especially because some of these reset functions (like the SDIO one)
may end up waiting for more than *two seconds*.

However, I get that this proposal requires way more effort, and this commit
will anyway improve the situation as it is... so, you get my:

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno at collabora.com>

> Suggested-by: YN Chen <YN.Chen at mediatek.com>
> Signed-off-by: Sean Wang <sean.wang at mediatek.com>