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[ALSA] usbaudio - Coping with short replies in usbmixer 

This patch makes sure that short USB replies are treated as an
error when requesting the value of a certain mixer control.

Signed-off-by: Thomas Reitmayr <thomas@devbase.at>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>
This commit is contained in:
Thomas Reitmayr 2007-05-15 11:47:48 +02:00 committed by Jaroslav Kysela
parent 8286c53e54
commit a04395ead6
1 changed files with 1 additions and 1 deletions
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2
sound/usb/usbmixer.c
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@ -360,7 +360,7 @@ static int get_ctl_value(struct usb_mixer_elem_info *cval, int request, int vali
request,
USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
validx, cval->mixer->ctrlif | (cval->id << 8),
buf, val_len, 100) >= 0) {
buf, val_len, 100) >= val_len) {
*value_ret = convert_signed_value(cval, snd_usb_combine_bytes(buf, val_len));
return 0;
}