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ALSA: usb-audio: Configure sync endpoints before data

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commit 0e85a22d01 upstream.

Devices such as the TC-Helicon GoXLR require the sync endpoint to be
configured in advance of the data endpoint in order for sound output
to work.

This patch simply changes the ordering of EP configuration to resolve
this.

Fixes: bf6313a0ff ("ALSA: usb-audio: Refactor endpoint management")
BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=215079
Signed-off-by: Craig McLure <craig@mclure.net>
Reviewed-by: Jaroslav Kysela <perex@perex.cz>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20220524062115.25968-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Craig McLure 2022-05-24 08:21:15 +02:00 committed by Greg Kroah-Hartman
parent 8d1f715730
commit f18aa2fc00
1 changed files with 11 additions and 6 deletions
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17
sound/usb/pcm.c
View file

@ -439,16 +439,21 @@ static int configure_endpoints(struct snd_usb_audio *chip,
/* stop any running stream beforehand */
if (stop_endpoints(subs, false))
sync_pending_stops(subs);
if (subs->sync_endpoint) {
err = snd_usb_endpoint_configure(chip, subs->sync_endpoint);
if (err < 0)
return err;
}
err = snd_usb_endpoint_configure(chip, subs->data_endpoint);
if (err < 0)
return err;
snd_usb_set_format_quirk(subs, subs->cur_audiofmt);
}
if (subs->sync_endpoint) {
err = snd_usb_endpoint_configure(chip, subs->sync_endpoint);
if (err < 0)
return err;
} else {
if (subs->sync_endpoint) {
err = snd_usb_endpoint_configure(chip, subs->sync_endpoint);
if (err < 0)
return err;
}
}
return 0;