ALSA: emu10k1 - Fix memory corruption

patch 7583cb51a1e276591f57a2fae05489c878f8ef54 from mainline.

[ALSA] emu10k1 - Fix memory corruption

The number of mixer elements for SPDIF control don't match with the
actual array size (3).  This may result in a memory corruption that
overwrites the i2c_capture_source field (ALSA bug#3095).

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/sound/pci/emu10k1/emumixer.c b/sound/pci/emu10k1/emumixer.c
index 7b2c1dcc53376c76dbdd61928d2b8574043a51c4..5bff700e3d0c865b94198b09d2d47a1bd582ff5a 100644 (file)
--- a/sound/pci/emu10k1/emumixer.c
+++ b/sound/pci/emu10k1/emumixer.c
@@ -871,7 +871,7 @@ static struct snd_kcontrol_new snd_emu10k1_spdif_mask_control =
        .access =       SNDRV_CTL_ELEM_ACCESS_READ,
        .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
        .name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,MASK),
-       .count =        4,
+       .count =        3,
        .info =         snd_emu10k1_spdif_info,
        .get =          snd_emu10k1_spdif_get_mask
 };
@@ -880,7 +880,7 @@ static struct snd_kcontrol_new snd_emu10k1_spdif_control =
 {
        .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
        .name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),
-       .count =        4,
+       .count =        3,
        .info =         snd_emu10k1_spdif_info,
        .get =          snd_emu10k1_spdif_get,
        .put =          snd_emu10k1_spdif_put