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ALSA: hda - Report errors when invalid values are passed to snd_hda_amp_*()

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The values should be in 8 bits.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2010-03-29 09:19:38 +02:00
parent 55440e4e37
commit 4671264608
1 changed files with 5 additions and 0 deletions
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5
sound/pci/hda/hda_codec.c
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@ -1461,6 +1461,8 @@ int snd_hda_codec_amp_update(struct hda_codec *codec, hda_nid_t nid, int ch,
info = get_alloc_amp_hash(codec, HDA_HASH_KEY(nid, direction, idx));
if (!info)
return 0;
if (snd_BUG_ON(mask & ~0xff))
mask &= 0xff;
val &= mask;
val |= get_vol_mute(codec, info, nid, ch, direction, idx) & ~mask;
if (info->vol[ch] == val)
@ -1486,6 +1488,9 @@ int snd_hda_codec_amp_stereo(struct hda_codec *codec, hda_nid_t nid,
int direction, int idx, int mask, int val)
{
int ch, ret = 0;
if (snd_BUG_ON(mask & ~0xff))
mask &= 0xff;
for (ch = 0; ch < 2; ch++)
ret |= snd_hda_codec_amp_update(codec, nid, ch, direction,
idx, mask, val);