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authorTakashi Iwai <tiwai@suse.de>2012-01-09 21:26:05 +0400
committerTakashi Iwai <tiwai@suse.de>2012-01-09 21:27:54 +0400
commit74eeb141d3bdf5a9a65c84dd637c41f12c40f41c (patch)
tree819cfbefd802e9e4c7daefd9055d59e632343228 /sound/pci/asihpi/asihpi.c
parent9badda0a0afffebbe1cb30565800896534a6c5bd (diff)
downloadlinux-74eeb141d3bdf5a9a65c84dd637c41f12c40f41c.tar.xz
ALSA: asihpi - Fix potential Oops in snd_asihpi_cmode_info()
Dan Carpenter reported that setting 0 to uinfo->value.enumerated.items in snd_asihpi_cmode_info() may lead to Oops. This function should return an error immediately in such a case instead. Cc: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/asihpi/asihpi.c')
-rw-r--r--sound/pci/asihpi/asihpi.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/sound/pci/asihpi/asihpi.c b/sound/pci/asihpi/asihpi.c
index fd3926fb0a08..e8de831f98bc 100644
--- a/sound/pci/asihpi/asihpi.c
+++ b/sound/pci/asihpi/asihpi.c
@@ -2259,6 +2259,9 @@ static int snd_asihpi_cmode_info(struct snd_kcontrol *kcontrol,
valid_modes++;
}
+ if (!valid_modes)
+ return -EINVAL;
+
uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
uinfo->count = 1;
uinfo->value.enumerated.items = valid_modes;