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| author |   Dan Carpenter <dan.carpenter@oracle.com> | 2011-10-28 09:46:01 +0300 |
|---|---|---|
| committer |   Takashi Iwai <tiwai@suse.de> | 2011-10-31 09:52:43 +0100 |
| commit | f7b2bb8549e352353427d0f8913c96914dd0baab (patch) | |
| tree | 33f5ae7bb40d02c9a552115a0dd587029f2e32f6 /sound/core/hwdep.c | |
| parent | Merge branch 'topic/hda' into for-linus (diff) | |
| download | linux-dev-f7b2bb8549e352353427d0f8913c96914dd0baab.tar.xz linux-dev-f7b2bb8549e352353427d0f8913c96914dd0baab.zip | |
ALSA: hwdep: silence integer overflow warning
Smatch complains that if device is INT_MAX then device + 1 can
overflow. It just means we would have an annoying loop while we
check all the devices from -2147483648 to SNDRV_MINOR_HWDEPS.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/core/hwdep.c')
| -rw-r--r-- | sound/core/hwdep.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/sound/core/hwdep.c b/sound/core/hwdep.c index a70ee7f1ed98..031e215b6dde 100644 --- a/sound/core/hwdep.c +++ b/sound/core/hwdep.c @@ -272,7 +272,14 @@ static int snd_hwdep_control_ioctl(struct snd_card *card, if (get_user(device, (int __user *)arg)) return -EFAULT; mutex_lock(®ister_mutex); - device = device < 0 ? 0 : device + 1; + + if (device < 0) + device = 0; + else if (device < SNDRV_MINOR_HWDEPS) + device++; + else + device = SNDRV_MINOR_HWDEPS; + while (device < SNDRV_MINOR_HWDEPS) { if (snd_hwdep_search(card, device)) break; |