Re: WM8962 crashing on suspend

[Mark Brown <broonie@kernel.org>]

[-- Attachment #1: Type: text/plain, Size: 1044 bytes --]

On Tue, Apr 26, 2022 at 11:36:26AM -0500, Adam Ford wrote:
> I have an imx8m Mini with a wm8962 codec.  If I run a speaker test and
> suspend the board while the speaker test is running, I get the
> following upon wake:
> 
> wm8962 3-001a: ASoC: error at soc_component_read_no_lock on wm8962.3-001a: -16
> 
> This message repeats itself over and over again.  If I attempt to use
> any audio, it fails until I reboot the board.
> 
> If I run the audio test, then exit and suspend, the audio works upon
> resume, so it appears to be related to suspending while running.
> 
> I am hoping someone might have a suggestion as to what I might be able
> to do or try to allow this to successfully suspend and resume if the
> device is playing sound.

I do note that wm8962 doesn't have any system suspend code which is
possibly an issue if power is lost during suspend, it only has runtime
PM operations.  If the device was runtime idle before suspend those will
figure everything out, if the device was active they won't kick in.

[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 488 bytes --]