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| author | Colin Ian King <colin.king@canonical.com> | 2018-05-28 00:32:19 +0300 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2018-05-28 12:30:33 +0300 |
| commit | 014cea591afac9b3dae61793446f83d5be634203 (patch) | |
| tree | 74f51d3aa884454b4c6d8dc3003ebd813d61c1c4 | |
| parent | 3d6246173798fc7a81a69ad3fd0dd55fa1779068 (diff) | |
| download | linux-014cea591afac9b3dae61793446f83d5be634203.tar.xz | |
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>
| -rw-r--r-- | sound/xen/xen_snd_front_alsa.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/sound/xen/xen_snd_front_alsa.c b/sound/xen/xen_snd_front_alsa.c index 5041f83e98d2..5a2bd70a2fa1 100644 --- a/sound/xen/xen_snd_front_alsa.c +++ b/sound/xen/xen_snd_front_alsa.c @@ -466,13 +466,14 @@ static int alsa_prepare(struct snd_pcm_substream *substream) 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, |