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ALSA: usb-audio: Drop superfluous error message after disconnection

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The error from snd_usb_lock_shutdown() indicates that the device is
disconnected, hence it makes no sense to show any further control
message error in get_ctl_value_v2().  Return the error directly
instead.

Tested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20211014130636.17860-3-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2021-10-14 15:06:35 +02:00
parent ac9b019d07
commit 509975c778
1 changed files with 2 additions and 4 deletions
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6
sound/usb/mixer.c
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@ -361,9 +361,8 @@ static int get_ctl_value_v2(struct usb_mixer_elem_info *cval, int request,
memset(buf, 0, sizeof(buf));
ret = snd_usb_lock_shutdown(chip) ? -EIO : 0;
if (ret)
goto error;
if (snd_usb_lock_shutdown(chip))
return -EIO;
idx = mixer_ctrl_intf(cval->head.mixer) | (cval->head.id << 8);
ret = snd_usb_ctl_msg(chip->dev, usb_rcvctrlpipe(chip->dev, 0), bRequest,
@ -372,7 +371,6 @@ static int get_ctl_value_v2(struct usb_mixer_elem_info *cval, int request,
snd_usb_unlock_shutdown(chip);
if (ret < 0) {
error:
usb_audio_dbg(chip,
"cannot get ctl value: req = %#x, wValue = %#x, wIndex = %#x, type = %d\n",
request, validx, idx, cval->val_type);