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authorTakashi Iwai <tiwai@suse.de>2009-07-10 12:52:27 +0200
committerTakashi Iwai <tiwai@suse.de>2009-07-10 12:56:41 +0200
commit3c6aae4489e7c05f3685e9eaa538249be7c79ebe (patch)
tree95d1db12b1668da922684d45acd156fe308ca35f /sound/pci/hda/hda_codec.c
parent31909b83ea5b4035ce129bb0df622ec2d2fb3e96 (diff)
ALSA: hda - Check codec errors in snd_hda_get_connections()
The codec read errors in snd_hda_get_connections() are ignored so far, and it causes a problem like the bug in the commit 9d30937accf2c01e8b0bd59787409a7348cbbcb7 ALSA: hda_intel: more strict alc880_parse_auto_config dig_nid checking Better to check errors in the function and returns a proper error code rather than passing bogus NID values. Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/hda/hda_codec.c')
-rw-r--r--sound/pci/hda/hda_codec.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index 94d848e9871..ec352c6ae49 100644
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -316,6 +316,8 @@ int snd_hda_get_connections(struct hda_codec *codec, hda_nid_t nid,
/* single connection */
parm = snd_hda_codec_read(codec, nid, 0,
AC_VERB_GET_CONNECT_LIST, 0);
+ if (parm == -1 && codec->bus->rirb_error)
+ return -EIO;
conn_list[0] = parm & mask;
return 1;
}
@@ -327,9 +329,12 @@ int snd_hda_get_connections(struct hda_codec *codec, hda_nid_t nid,
int range_val;
hda_nid_t val, n;
- if (i % num_elems == 0)
+ if (i % num_elems == 0) {
parm = snd_hda_codec_read(codec, nid, 0,
AC_VERB_GET_CONNECT_LIST, i);
+ if (parm == -1 && codec->bus->rirb_error)
+ return -EIO;
+ }
range_val = !!(parm & (1 << (shift-1))); /* ranges */
val = parm & mask;
parm >>= shift;