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[ALSA] ca0106 - Check value range in ctl callbacks 

Check the value ranges in ctl put callbacks properly.
Some callbacks may access a wrong pointer depending on the value passed.
Also, fixed the access to the wrong field for enum values, and fixed
some callbacks to return the proper error code.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Takashi Iwai 2007-11-15 14:42:34 +01:00 committed by Jaroslav Kysela
parent 7eba5c9dc3
commit 5fe619f983
1 changed files with 12 additions and 6 deletions
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18
sound/pci/ca0106/ca0106_mixer.c
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@ -86,7 +86,7 @@ static int snd_ca0106_shared_spdif_get(struct snd_kcontrol *kcontrol,
{
struct snd_ca0106 *emu = snd_kcontrol_chip(kcontrol);
ucontrol->value.enumerated.item[0] = emu->spdif_enable;
ucontrol->value.integer.value[0] = emu->spdif_enable;
return 0;
}
@ -98,11 +98,11 @@ static int snd_ca0106_shared_spdif_put(struct snd_kcontrol *kcontrol,
int change = 0;
u32 mask;
val = ucontrol->value.enumerated.item[0] ;
val = !!ucontrol->value.integer.value[0];
change = (emu->spdif_enable != val);
if (change) {
emu->spdif_enable = val;
if (val == 1) {
if (val) {
/* Digital */
snd_ca0106_ptr_write(emu, SPDIF_SELECT1, 0, 0xf);
snd_ca0106_ptr_write(emu, SPDIF_SELECT2, 0, 0x0b000000);
@ -159,6 +159,8 @@ static int snd_ca0106_capture_source_put(struct snd_kcontrol *kcontrol,
u32 source;
val = ucontrol->value.enumerated.item[0] ;
if (val >= 6)
return -EINVAL;
change = (emu->capture_source != val);
if (change) {
emu->capture_source = val;
@ -207,6 +209,8 @@ static int snd_ca0106_i2c_capture_source_put(struct snd_kcontrol *kcontrol,
* for the particular source.
*/
source_id = ucontrol->value.enumerated.item[0] ;
if (source_id >= 4)
return -EINVAL;
change = (emu->i2c_capture_source != source_id);
if (change) {
snd_ca0106_i2c_write(emu, ADC_MUX, 0); /* Mute input */
@ -271,6 +275,8 @@ static int snd_ca0106_capture_mic_line_in_put(struct snd_kcontrol *kcontrol,
u32 tmp;
val = ucontrol->value.enumerated.item[0] ;
if (val > 1)
return -EINVAL;
change = (emu->capture_mic_line_in != val);
if (change) {
emu->capture_mic_line_in = val;
@ -443,7 +449,7 @@ static int snd_ca0106_i2c_volume_put(struct snd_kcontrol *kcontrol,
ogain = emu->i2c_capture_volume[source_id][0]; /* Left */
ngain = ucontrol->value.integer.value[0];
if (ngain > 0xff)
return 0;
return -EINVAL;
if (ogain != ngain) {
if (emu->i2c_capture_source == source_id)
snd_ca0106_i2c_write(emu, ADC_ATTEN_ADCL, ((ngain) & 0xff) );
@ -453,7 +459,7 @@ static int snd_ca0106_i2c_volume_put(struct snd_kcontrol *kcontrol,
ogain = emu->i2c_capture_volume[source_id][1]; /* Right */
ngain = ucontrol->value.integer.value[1];
if (ngain > 0xff)
return 0;
return -EINVAL;
if (ogain != ngain) {
if (emu->i2c_capture_source == source_id)
snd_ca0106_i2c_write(emu, ADC_ATTEN_ADCR, ((ngain) & 0xff));
@ -497,7 +503,7 @@ static int spi_mute_put(struct snd_kcontrol *kcontrol,
}
ret = snd_ca0106_spi_write(emu, emu->spi_dac_reg[reg]);
return ret ? -1 : 1;
return ret ? -EINVAL : 1;
}
#define CA_VOLUME(xname,chid,reg) \