[bug report] ALSA: usb-audio: Add new quirk FIXED_RATE for JBL Quantum810 Wireless

[Jaroslav Kysela]

On 06. 01. 23 10:35, Dan Carpenter wrote:
> Hello Jaroslav Kysela,
> 
> The patch fd28941cff1c: "ALSA: usb-audio: Add new quirk FIXED_RATE
> for JBL Quantum810 Wireless" from Dec 15, 2022, leads to the
> following Smatch static checker warning:
> 
> 	sound/usb/pcm.c:543 snd_usb_hw_params()
> 	error: uninitialized symbol 'sync_fixed_rate'.

...

>      496         if (fmt->implicit_fb) {
>      497                 sync_fmt = snd_usb_find_implicit_fb_sync_format(chip, fmt,
>      498                                                                 hw_params,
>      499                                                                 !substream->stream,
>      500                                                                 &sync_fixed_rate);
> 
> "sync_fixed_rate" is uninitialized when we "Use the original audioformat
> as fallback for the shared altset" and find_matching_substream() returns
> NULL.

Thanks. The fix was sent:

https://lore.kernel.org/alsa-devel/20230109141133.335543-1-perex@perex.cz/

						Jaroslav

-- 
Jaroslav Kysela <perex at perex.cz>
Linux Sound Maintainer; ALSA Project; Red Hat, Inc.