ALSA: xen-front: fix unsigned error check on return from to_sndif_format
The negative error return from the call to to_sndif_format is being
assigned to an unsigned 8 bit integer and hence the check for a negative
value is always going to be false. Fix this by using ret as the error
return and hence the negative error can be detected and assign
the u8 sndif_format to ret if there is no error.
Detected by CoverityScan, CID#1469385 ("Unsigned compared against 0")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Takashi Sakamoto <o-takashi@sakamoccchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/xen/xen_snd_front_alsa.c b/sound/xen/xen_snd_front_alsa.c
index 5041f83..5a2bd70 100644
--- a/sound/xen/xen_snd_front_alsa.c
+++ b/sound/xen/xen_snd_front_alsa.c
@@ -466,13 +466,14 @@
u8 sndif_format;
int ret;
- sndif_format = to_sndif_format(runtime->format);
- if (sndif_format < 0) {
+ ret = to_sndif_format(runtime->format);
+ if (ret < 0) {
dev_err(&stream->front_info->xb_dev->dev,
"Unsupported sample format: %d\n",
runtime->format);
- return sndif_format;
+ return ret;
}
+ sndif_format = ret;
ret = xen_snd_front_stream_prepare(&stream->evt_pair->req,
&stream->sh_buf,