Commit a04395ea authored by Thomas Reitmayr's avatar Thomas Reitmayr Committed by Jaroslav Kysela

[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: default avatarThomas Reitmayr <thomas@devbase.at>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
Signed-off-by: default avatarJaroslav Kysela <perex@suse.cz>
parent 8286c53e
...@@ -360,7 +360,7 @@ static int get_ctl_value(struct usb_mixer_elem_info *cval, int request, int vali ...@@ -360,7 +360,7 @@ static int get_ctl_value(struct usb_mixer_elem_info *cval, int request, int vali
request, request,
USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN, USB_RECIP_INTERFACE | USB_TYPE_CLASS | USB_DIR_IN,
validx, cval->mixer->ctrlif | (cval->id << 8), 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)); *value_ret = convert_signed_value(cval, snd_usb_combine_bytes(buf, val_len));
return 0; return 0;
} }
......
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