[ALSA] powermac - Check value range in ctl callbacks

Check the value ranges in ctl put callbacks properly in snd-powermac
driver.

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

6 files changed, 79 insertions, 33 deletions

diff --git a/sound/ppc/awacs.c b/sound/ppc/awacs.c
index 05dabe454658..b15bfb6f7011 100644
--- a/sound/ppc/awacs.c
+++ b/sound/ppc/awacs.c
@@ -175,10 +175,12 @@ static int snd_pmac_awacs_put_volume(struct snd_kcontrol *kcontrol,
         int inverted = (kcontrol->private_value >> 16) & 1;
         int val, oldval;
         unsigned long flags;
-        int vol[2];
+        unsigned int vol[2];
 
         vol[0] = ucontrol->value.integer.value[0];
         vol[1] = ucontrol->value.integer.value[1];
+        if (vol[0] > 0x0f || vol[1] > 0x0f)
+                return -EINVAL;
         if (inverted) {
                 vol[0] = 0x0f - vol[0];
                 vol[1] = 0x0f - vol[1];
@@ -421,10 +423,14 @@ static int snd_pmac_awacs_put_tone_amp(struct snd_kcontrol *kcontrol,
         struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
         int index = kcontrol->private_value;
         struct awacs_amp *amp = chip->mixer_data;
+        unsigned int val;
         snd_assert(amp, return -EINVAL);
         snd_assert(index >= 0 && index <= 1, return -EINVAL);
-        if (ucontrol->value.integer.value[0] != amp->amp_tone[index]) {
-                amp->amp_tone[index] = ucontrol->value.integer.value[0];
+        val = ucontrol->value.integer.value[0];
+        if (val > 14)
+                return -EINVAL;
+        if (val != amp->amp_tone[index]) {
+                amp->amp_tone[index] = val;
                 awacs_amp_set_tone(amp, amp->amp_tone[0], amp->amp_tone[1]);
                 return 1;
         }
@@ -456,9 +462,13 @@ static int snd_pmac_awacs_put_master_amp(struct snd_kcontrol *kcontrol,
 {
         struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
         struct awacs_amp *amp = chip->mixer_data;
+        unsigned int val;
         snd_assert(amp, return -EINVAL);
-        if (ucontrol->value.integer.value[0] != amp->amp_master) {
-                amp->amp_master = ucontrol->value.integer.value[0];
+        val = ucontrol->value.integer.value[0];
+        if (val > 99)
+                return -EINVAL;
+        if (val != amp->amp_master) {
+                amp->amp_master = val;
                 awacs_amp_set_master(amp, amp->amp_master);
                 return 1;
         }
diff --git a/sound/ppc/beep.c b/sound/ppc/beep.c
index 566b5ab9d4e8..465dd0466b9f 100644
--- a/sound/ppc/beep.c
+++ b/sound/ppc/beep.c
@@ -195,10 +195,13 @@ static int snd_pmac_put_beep(struct snd_kcontrol *kcontrol,
                              struct snd_ctl_elem_value *ucontrol)
 {
         struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
-        int oval;
+        unsigned int oval, nval;
         snd_assert(chip->beep, return -ENXIO);
         oval = chip->beep->volume;
-        chip->beep->volume = ucontrol->value.integer.value[0];
+        nval = ucontrol->value.integer.value[0];
+        if (nval > 100)
+                return -EINVAL;
+        chip->beep->volume = nval;
         return oval != chip->beep->volume;
 }
 
diff --git a/sound/ppc/burgundy.c b/sound/ppc/burgundy.c
index e02263fe44dc..fec74e829743 100644
--- a/sound/ppc/burgundy.c
+++ b/sound/ppc/burgundy.c
@@ -136,6 +136,9 @@ snd_pmac_burgundy_write_volume(struct snd_pmac *chip, unsigned int address,
 {
         int hardvolume, lvolume, rvolume;
 
+        if (volume[0] < 0 || volume[0] > 100 ||
+            volume[1] < 0 || volume[1] > 100)
+                return; /* -EINVAL */
         lvolume = volume[0] ? volume[0] + BURGUNDY_VOLUME_OFFSET : 0;
         rvolume = volume[1] ? volume[1] + BURGUNDY_VOLUME_OFFSET : 0;
 
@@ -301,14 +304,14 @@ static int snd_pmac_burgundy_put_volume_out(struct snd_kcontrol *kcontrol,
         struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
         unsigned int addr = BASE2ADDR(kcontrol->private_value & 0xff);
         int stereo = (kcontrol->private_value >> 24) & 1;
-        int oval, val;
+        unsigned int oval, val;
 
         oval = ~snd_pmac_burgundy_rcb(chip, addr) & 0xff;
-        val = ucontrol->value.integer.value[0];
+        val = ucontrol->value.integer.value[0] & 15;
         if (stereo)
-                val |= ucontrol->value.integer.value[1] << 4;
+                val |= (ucontrol->value.integer.value[1] & 15) << 4;
         else
-                val |= ucontrol->value.integer.value[0] << 4;
+                val |= val << 4;
         val = ~val & 0xff;
         snd_pmac_burgundy_wcb(chip, addr, val);
         return val != oval;
diff --git a/sound/ppc/daca.c b/sound/ppc/daca.c
index c5a1f0be6a4d..0c8145792d54 100644
--- a/sound/ppc/daca.c
+++ b/sound/ppc/daca.c
@@ -115,7 +115,7 @@ static int daca_put_deemphasis(struct snd_kcontrol *kcontrol,
                 return -ENODEV;
         change = mix->deemphasis != ucontrol->value.integer.value[0];
         if (change) {
-                mix->deemphasis = ucontrol->value.integer.value[0];
+                mix->deemphasis = !!ucontrol->value.integer.value[0];
                 daca_set_volume(mix);
         }
         return change;
@@ -149,15 +149,20 @@ static int daca_put_volume(struct snd_kcontrol *kcontrol,
 {
         struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
         struct pmac_daca *mix;
+        unsigned int vol[2];
         int change;
 
         if (! (mix = chip->mixer_data))
                 return -ENODEV;
-        change = mix->left_vol != ucontrol->value.integer.value[0] ||
-                mix->right_vol != ucontrol->value.integer.value[1];
+        vol[0] = ucontrol->value.integer.value[0];
+        vol[1] = ucontrol->value.integer.value[1];
+        if (vol[0] > DACA_VOL_MAX || vol[1] > DACA_VOL_MAX)
+                return -EINVAL;
+        change = mix->left_vol != vol[0] ||
+                mix->right_vol != vol[1];
         if (change) {
-                mix->left_vol = ucontrol->value.integer.value[0];
-                mix->right_vol = ucontrol->value.integer.value[1];
+                mix->left_vol = vol[0];
+                mix->right_vol = vol[1];
                 daca_set_volume(mix);
         }
         return change;
@@ -188,7 +193,7 @@ static int daca_put_amp(struct snd_kcontrol *kcontrol,
                 return -ENODEV;
         change = mix->amp_on != ucontrol->value.integer.value[0];
         if (change) {
-                mix->amp_on = ucontrol->value.integer.value[0];
+                mix->amp_on = !!ucontrol->value.integer.value[0];
                 i2c_smbus_write_byte_data(mix->i2c.client, DACA_REG_GCFG,
                                           mix->amp_on ? 0x05 : 0x04);
         }
diff --git a/sound/ppc/pmac.c b/sound/ppc/pmac.c
index 4f9b19c90a43..8c47bebc77c8 100644
--- a/sound/ppc/pmac.c
+++ b/sound/ppc/pmac.c
@@ -1028,7 +1028,7 @@ static int pmac_auto_mute_put(struct snd_kcontrol *kcontrol,
 {
         struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
         if (ucontrol->value.integer.value[0] != chip->auto_mute) {
-                chip->auto_mute = ucontrol->value.integer.value[0];
+                chip->auto_mute = !!ucontrol->value.integer.value[0];
                 if (chip->update_automute)
                         chip->update_automute(chip, 1);
                 return 1;
diff --git a/sound/ppc/tumbler.c b/sound/ppc/tumbler.c
index 5821cdd0bec9..bacff3d1c189 100644
--- a/sound/ppc/tumbler.c
+++ b/sound/ppc/tumbler.c
@@ -275,14 +275,20 @@ static int tumbler_put_master_volume(struct snd_kcontrol *kcontrol,
 {
         struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
         struct pmac_tumbler *mix = chip->mixer_data;
+        unsigned int vol[2];
         int change;
 
         snd_assert(mix, return -ENODEV);
-        change = mix->master_vol[0] != ucontrol->value.integer.value[0] ||
-                mix->master_vol[1] != ucontrol->value.integer.value[1];
+        vol[0] = ucontrol->value.integer.value[0];
+        vol[1] = ucontrol->value.integer.value[1];
+        if (vol[0] >= ARRAY_SIZE(master_volume_table) ||
+            vol[1] >= ARRAY_SIZE(master_volume_table))
+                return -EINVAL;
+        change = mix->master_vol[0] != vol[0] ||
+                mix->master_vol[1] != vol[1];
         if (change) {
-                mix->master_vol[0] = ucontrol->value.integer.value[0];
-                mix->master_vol[1] = ucontrol->value.integer.value[1];
+                mix->master_vol[0] = vol[0];
+                mix->master_vol[1] = vol[1];
                 tumbler_set_master_volume(mix);
         }
         return change;
@@ -417,13 +423,22 @@ static int tumbler_put_drc_value(struct snd_kcontrol *kcontrol,
 {
         struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
         struct pmac_tumbler *mix;
+        unsigned int val;
         int change;
 
         if (! (mix = chip->mixer_data))
                 return -ENODEV;
-        change = mix->drc_range != ucontrol->value.integer.value[0];
+        val = ucontrol->value.integer.value[0];
+        if (chip->model == PMAC_TUMBLER) {
+                if (val > TAS3001_DRC_MAX)
+                        return -EINVAL;
+        } else {
+                if (val > TAS3004_DRC_MAX)
+                        return -EINVAL;
+        }
+        change = mix->drc_range != val;
         if (change) {
-                mix->drc_range = ucontrol->value.integer.value[0];
+                mix->drc_range = val;
                 if (chip->model == PMAC_TUMBLER)
                         tumbler_set_drc(mix);
                 else
@@ -530,13 +545,17 @@ static int tumbler_put_mono(struct snd_kcontrol *kcontrol,
         struct tumbler_mono_vol *info = (struct tumbler_mono_vol *)kcontrol->private_value;
         struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
         struct pmac_tumbler *mix;
+        unsigned int vol;
         int change;
 
         if (! (mix = chip->mixer_data))
                 return -ENODEV;
-        change = mix->mono_vol[info->index] != ucontrol->value.integer.value[0];
+        vol = ucontrol->value.integer.value[0];
+        if (vol >= info->max)
+                return -EINVAL;
+        change = mix->mono_vol[info->index] != vol;
         if (change) {
-                mix->mono_vol[info->index] = ucontrol->value.integer.value[0];
+                mix->mono_vol[info->index] = vol;
                 tumbler_set_mono_volume(mix, info);
         }
         return change;
@@ -672,15 +691,21 @@ static int snapper_put_mix(struct snd_kcontrol *kcontrol,
         int idx = (int)kcontrol->private_value;
         struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
         struct pmac_tumbler *mix;
+        unsigned int vol[2];
         int change;
 
         if (! (mix = chip->mixer_data))
                 return -ENODEV;
-        change = mix->mix_vol[idx][0] != ucontrol->value.integer.value[0] ||
-                mix->mix_vol[idx][1] != ucontrol->value.integer.value[1];
+        vol[0] = ucontrol->value.integer.value[0];
+        vol[1] = ucontrol->value.integer.value[1];
+        if (vol[0] >= ARRAY_SIZE(mixer_volume_table) ||
+            vol[1] >= ARRAY_SIZE(mixer_volume_table))
+                return -EINVAL;
+        change = mix->mix_vol[idx][0] != vol[0] ||
+                mix->mix_vol[idx][1] != vol[1];
         if (change) {
-                mix->mix_vol[idx][0] = ucontrol->value.integer.value[0];
-                mix->mix_vol[idx][1] = ucontrol->value.integer.value[1];
+                mix->mix_vol[idx][0] = vol[0];
+                mix->mix_vol[idx][1] = vol[1];
                 snapper_set_mix_vol(mix, idx);
         }
         return change;
@@ -784,7 +809,7 @@ static int snapper_get_capture_source(struct snd_kcontrol *kcontrol,
         struct pmac_tumbler *mix = chip->mixer_data;
 
         snd_assert(mix, return -ENODEV);
-        ucontrol->value.integer.value[0] = mix->capture_source;
+        ucontrol->value.enumerated.value[0] = mix->capture_source;
         return 0;
 }
 
@@ -796,9 +821,9 @@ static int snapper_put_capture_source(struct snd_kcontrol *kcontrol,
         int change;
 
         snd_assert(mix, return -ENODEV);
-        change = ucontrol->value.integer.value[0] != mix->capture_source;
+        change = ucontrol->value.enuemerated.item[0] != mix->capture_source;
         if (change) {
-                mix->capture_source = !!ucontrol->value.integer.value[0];
+                mix->capture_source = !!ucontrol->value.enumerated.item[0];
                 snapper_set_capture_source(mix);
         }
         return change;