diff options
Diffstat (limited to 'sound/i2c')
| -rw-r--r-- | sound/i2c/other/ak4xxx-adda.c | 45 |
1 files changed, 34 insertions, 11 deletions
diff --git a/sound/i2c/other/ak4xxx-adda.c b/sound/i2c/other/ak4xxx-adda.c index de03f689fa2e..39bb03add7e1 100644 --- a/sound/i2c/other/ak4xxx-adda.c +++ b/sound/i2c/other/ak4xxx-adda.c @@ -377,8 +377,11 @@ static int put_ak_reg(struct snd_kcontrol *kcontrol, int addr, static int snd_akm4xxx_volume_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { - return put_ak_reg(kcontrol, AK_GET_ADDR(kcontrol->private_value), - ucontrol->value.integer.value[0]); + unsigned int mask = AK_GET_MASK(kcontrol->private_value); + unsigned int val = ucontrol->value.integer.value[0]; + if (val > mask) + return -EINVAL; + return put_ak_reg(kcontrol, AK_GET_ADDR(kcontrol->private_value), val); } static int snd_akm4xxx_stereo_volume_info(struct snd_kcontrol *kcontrol, @@ -409,11 +412,16 @@ static int snd_akm4xxx_stereo_volume_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { int addr = AK_GET_ADDR(kcontrol->private_value); + unsigned int mask = AK_GET_MASK(kcontrol->private_value); + unsigned int val[2]; int change; - change = put_ak_reg(kcontrol, addr, ucontrol->value.integer.value[0]); - change |= put_ak_reg(kcontrol, addr + 1, - ucontrol->value.integer.value[1]); + val[0] = ucontrol->value.integer.value[0]; + val[1] = ucontrol->value.integer.value[1]; + if (val[0] > mask || val[1] > mask) + return -EINVAL; + change = put_ak_reg(kcontrol, addr, val[0]); + change |= put_ak_reg(kcontrol, addr + 1, val[1]); return change; } @@ -508,6 +516,18 @@ static int ak4xxx_switch_put(struct snd_kcontrol *kcontrol, #define AK5365_NUM_INPUTS 5 +static int ak4xxx_capture_num_inputs(struct snd_akm4xxx *ak, int mixer_ch) +{ + int num_names; + const char **input_names; + + input_names = ak->adc_info[mixer_ch].input_names; + num_names = 0; + while (num_names < AK5365_NUM_INPUTS && input_names[num_names]) + ++num_names; + return num_names; +} + static int ak4xxx_capture_source_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) { @@ -516,18 +536,16 @@ static int ak4xxx_capture_source_info(struct snd_kcontrol *kcontrol, const char **input_names; int num_names, idx; - input_names = ak->adc_info[mixer_ch].input_names; - - num_names = 0; - while (num_names < AK5365_NUM_INPUTS && input_names[num_names]) - ++num_names; - + num_names = ak4xxx_capture_num_inputs(ak, mixer_ch); + if (!num_names) + return -EINVAL; uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED; uinfo->count = 1; uinfo->value.enumerated.items = num_names; idx = uinfo->value.enumerated.item; if (idx >= num_names) return -EINVAL; + input_names = ak->adc_info[mixer_ch].input_names; strncpy(uinfo->value.enumerated.name, input_names[idx], sizeof(uinfo->value.enumerated.name)); return 0; @@ -551,10 +569,15 @@ static int ak4xxx_capture_source_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_akm4xxx *ak = snd_kcontrol_chip(kcontrol); + int mixer_ch = AK_GET_SHIFT(kcontrol->private_value); int chip = AK_GET_CHIP(kcontrol->private_value); int addr = AK_GET_ADDR(kcontrol->private_value); int mask = AK_GET_MASK(kcontrol->private_value); unsigned char oval, val; + int num_names = ak4xxx_capture_num_inputs(ak, mixer_ch); + + if (ucontrol->value.enumerated.item[0] >= num_names) + return -EINVAL; oval = snd_akm4xxx_get(ak, chip, addr); val = oval & ~mask; |