[ALSA] pci - check value range in ctl callbacks

Check the value ranges in ctl put callbacks properly in the rest of
PCI drivers.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

1 files changed, 50 insertions, 21 deletions

diff --git a/sound/pci/pcxhr/pcxhr_mixer.c b/sound/pci/pcxhr/pcxhr_mixer.c
index 5f8d42633b0..4d8654575e1 100644
--- a/sound/pci/pcxhr/pcxhr_mixer.c
+++ b/sound/pci/pcxhr/pcxhr_mixer.c
@@ -120,8 +120,18 @@ static int pcxhr_analog_vol_put(struct snd_kcontrol *kcontrol,
         is_capture = (kcontrol->private_value != 0);
         for (i = 0; i < 2; i++) {
                 int  new_volume = ucontrol->value.integer.value[i];
-                int* stored_volume = is_capture ? &chip->analog_capture_volume[i] :
+                int *stored_volume = is_capture ?
+                        &chip->analog_capture_volume[i] :
                         &chip->analog_playback_volume[i];
+                if (is_capture) {
+                        if (new_volume < PCXHR_ANALOG_CAPTURE_LEVEL_MIN ||
+                            new_volume > PCXHR_ANALOG_CAPTURE_LEVEL_MAX)
+                                continue;
+                } else {
+                        if (new_volume < PCXHR_ANALOG_PLAYBACK_LEVEL_MIN ||
+                            new_volume > PCXHR_ANALOG_PLAYBACK_LEVEL_MAX)
+                                continue;
+                }
                 if (*stored_volume != new_volume) {
                         *stored_volume = new_volume;
                         changed = 1;
@@ -165,10 +175,13 @@ static int pcxhr_audio_sw_put(struct snd_kcontrol *kcontrol,
         int i, changed = 0;
         mutex_lock(&chip->mgr->mixer_mutex);
         for(i = 0; i < 2; i++) {
-                if (chip->analog_playback_active[i] != ucontrol->value.integer.value[i]) {
-                        chip->analog_playback_active[i] = ucontrol->value.integer.value[i];
+                if (chip->analog_playback_active[i] !=
+                    ucontrol->value.integer.value[i]) {
+                        chip->analog_playback_active[i] =
+                                !!ucontrol->value.integer.value[i];
                         changed = 1;
-                        pcxhr_update_analog_audio_level(chip, 0, i);    /* update playback levels */
+                        /* update playback levels */
+                        pcxhr_update_analog_audio_level(chip, 0, i);
                 }
         }
         mutex_unlock(&chip->mgr->mixer_mutex);
@@ -323,20 +336,24 @@ static int pcxhr_pcm_vol_put(struct snd_kcontrol *kcontrol,
         int i;
 
         mutex_lock(&chip->mgr->mixer_mutex);
-        if (is_capture)
-                stored_volume = chip->digital_capture_volume;           /* digital capture */
-        else
-                stored_volume = chip->digital_playback_volume[idx];     /* digital playback */
+        if (is_capture)         /* digital capture */
+                stored_volume = chip->digital_capture_volume;
+        else                    /* digital playback */
+                stored_volume = chip->digital_playback_volume[idx];
         for (i = 0; i < 2; i++) {
-                if (stored_volume[i] != ucontrol->value.integer.value[i]) {
-                        stored_volume[i] = ucontrol->value.integer.value[i];
+                int vol = ucontrol->value.integer.value[i];
+                if (vol < PCXHR_DIGITAL_LEVEL_MIN ||
+                    vol > PCXHR_DIGITAL_LEVEL_MAX)
+                        continue;
+                if (stored_volume[i] != vol) {
+                        stored_volume[i] = vol;
                         changed = 1;
                         if (is_capture) /* update capture volume */
                                 pcxhr_update_audio_pipe_level(chip, 1, i);
                 }
         }
-        if (! is_capture && changed)
-                pcxhr_update_playback_stream_level(chip, idx);  /* update playback volume */
+        if (!is_capture && changed)     /* update playback volume */
+                pcxhr_update_playback_stream_level(chip, idx);
         mutex_unlock(&chip->mgr->mixer_mutex);
         return changed;
 }
@@ -378,8 +395,10 @@ static int pcxhr_pcm_sw_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_v
         mutex_lock(&chip->mgr->mixer_mutex);
         j = idx;
         for (i = 0; i < 2; i++) {
-                if (chip->digital_playback_active[j][i] != ucontrol->value.integer.value[i]) {
-                        chip->digital_playback_active[j][i] = ucontrol->value.integer.value[i];
+                if (chip->digital_playback_active[j][i] !=
+                    ucontrol->value.integer.value[i]) {
+                        chip->digital_playback_active[j][i] =
+                                !!ucontrol->value.integer.value[i];
                         changed = 1;
                 }
         }
@@ -423,10 +442,13 @@ static int pcxhr_monitor_vol_put(struct snd_kcontrol *kcontrol,
 
         mutex_lock(&chip->mgr->mixer_mutex);
         for (i = 0; i < 2; i++) {
-                if (chip->monitoring_volume[i] != ucontrol->value.integer.value[i]) {
-                        chip->monitoring_volume[i] = ucontrol->value.integer.value[i];
-                        if(chip->monitoring_active[i])  /* do only when monitoring is unmuted */
+                if (chip->monitoring_volume[i] !=
+                    ucontrol->value.integer.value[i]) {
+                        chip->monitoring_volume[i] =
+                                !!ucontrol->value.integer.value[i];
+                        if(chip->monitoring_active[i])
                                 /* update monitoring volume and mute */
+                                /* do only when monitoring is unmuted */
                                 pcxhr_update_audio_pipe_level(chip, 0, i);
                         changed = 1;
                 }
@@ -470,15 +492,17 @@ static int pcxhr_monitor_sw_put(struct snd_kcontrol *kcontrol,
 
         mutex_lock(&chip->mgr->mixer_mutex);
         for (i = 0; i < 2; i++) {
-                if (chip->monitoring_active[i] != ucontrol->value.integer.value[i]) {
-                        chip->monitoring_active[i] = ucontrol->value.integer.value[i];
+                if (chip->monitoring_active[i] !=
+                    ucontrol->value.integer.value[i]) {
+                        chip->monitoring_active[i] =
+                                !!ucontrol->value.integer.value[i];
                         changed |= (1<<i); /* mask 0x01 and 0x02 */
                 }
         }
-        if(changed & 0x01)
+        if (changed & 0x01)
                 /* update left monitoring volume and mute */
                 pcxhr_update_audio_pipe_level(chip, 0, 0);
-        if(changed & 0x02)
+        if (changed & 0x02)
                 /* update right monitoring volume and mute */
                 pcxhr_update_audio_pipe_level(chip, 0, 1);
 
@@ -579,6 +603,8 @@ static int pcxhr_audio_src_put(struct snd_kcontrol *kcontrol,
         struct snd_pcxhr *chip = snd_kcontrol_chip(kcontrol);
         int ret = 0;
 
+        if (ucontrol->value.enumerated.item[0] >= 3)
+                return -EINVAL;
         mutex_lock(&chip->mgr->mixer_mutex);
         if (chip->audio_capture_source != ucontrol->value.enumerated.item[0]) {
                 chip->audio_capture_source = ucontrol->value.enumerated.item[0];
@@ -642,8 +668,11 @@ static int pcxhr_clock_type_put(struct snd_kcontrol *kcontrol,
                                 struct snd_ctl_elem_value *ucontrol)
 {
         struct pcxhr_mgr *mgr = snd_kcontrol_chip(kcontrol);
+        unsigned int clock_items = 3 + mgr->capture_chips;
         int rate, ret = 0;
 
+        if (ucontrol->value.enumerated.item[0] >= clock_items)
+                return -EINVAL;
         mutex_lock(&mgr->mixer_mutex);
         if (mgr->use_clock_type != ucontrol->value.enumerated.item[0]) {
                 mutex_lock(&mgr->setup_mutex);