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authorThomas Reitmayr <thomas@devbase.at>2007-05-15 11:47:48 +0200
committerJaroslav Kysela <perex@suse.cz>2007-05-16 12:23:20 +0200
commita04395ead6d17c83da64264b6fe78f852a648202 (patch)
tree74780939929e27939d2311c9ed64207435508e9a /sound/usb
parent8286c53e54b8b1b9489b4dd5d2d3a4f94b8c012e (diff)
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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>
Diffstat (limited to 'sound/usb')
-rw-r--r--sound/usb/usbmixer.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/sound/usb/usbmixer.c b/sound/usb/usbmixer.c
index 7b3bf35..325d4b6 100644
--- a/sound/usb/usbmixer.c
+++ b/sound/usb/usbmixer.c
@@ -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;
}