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ALSA: usb-audio: Always initialize fixed_rate in snd_usb_find_implicit_fb_sync_format()

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Handle the fallback code path, too.

Fixes: fd28941cff ("ALSA: usb-audio: Add new quirk FIXED_RATE for JBL Quantum810 Wireless")
BugLink: https://lore.kernel.org/alsa-devel/Y7frf3N%2FxzvESEsN@kili/
Reported-by: Dan Carpenter <error27@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Link: https://lore.kernel.org/r/20230109141133.335543-1-perex@perex.cz
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Jaroslav Kysela 2023-01-09 15:11:33 +01:00 committed by Takashi Iwai
parent ae50e2ab12
commit 291e9da914
2 changed files with 4 additions and 1 deletions
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3
sound/usb/implicit.c
View File

@ -471,7 +471,7 @@ snd_usb_find_implicit_fb_sync_format(struct snd_usb_audio *chip,
subs = find_matching_substream(chip, stream, target->sync_ep,
target->fmt_type);
if (!subs)
return sync_fmt;
goto end;
high_score = 0;
list_for_each_entry(fp, &subs->fmt_list, list) {
@ -485,6 +485,7 @@ snd_usb_find_implicit_fb_sync_format(struct snd_usb_audio *chip,
}
}
end:
if (fixed_rate)
*fixed_rate = snd_usb_pcm_has_fixed_rate(subs);
return sync_fmt;

2
sound/usb/pcm.c
View File

@ -163,6 +163,8 @@ bool snd_usb_pcm_has_fixed_rate(struct snd_usb_substream *subs)
struct snd_usb_audio *chip = subs->stream->chip;
int rate = -1;
if (!subs)
return false;
if (!(chip->quirk_flags & QUIRK_FLAG_FIXED_RATE))
return false;
list_for_each_entry(fp, &subs->fmt_list, list) {