Commit a04395ea authored May 15, 2007 by Thomas Reitmayr Committed by Jaroslav Kysela May 16, 2007

[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>

parent 8286c53e

sound/usb/usbmixer.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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;
		}