diff options
| author | Jaroslav Kysela <perex@perex.cz> | 2009-07-22 16:20:40 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2009-07-22 16:30:03 +0200 |
| commit | 16a433d8b38720a816736d59a62e705c19e31600 (patch) | |
| tree | ec2efc9b071b2fc7b68d9a0278a9f64d997d7af1 /sound/pci/hda/hda_codec.c | |
| parent | 254da007f93f79ee773788cbb38f24dfab9590f5 (diff) | |
ALSA: hda-intel: Cleanups for widget connection list handling
This patch adds a check to snd_hda_get_connections() routine for
presence of AC_WCAP_CONN_LIST. Also, make sure that negative error
codes from noted route are handled on all places as errors.
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
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.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c index 3ecb45ddadf..aa554078611 100644 --- a/sound/pci/hda/hda_codec.c +++ b/sound/pci/hda/hda_codec.c @@ -306,6 +306,12 @@ int snd_hda_get_connections(struct hda_codec *codec, hda_nid_t nid, if (snd_BUG_ON(!conn_list || max_conns <= 0)) return -EINVAL; + if ((get_wcaps(codec, nid) & AC_WCAP_CONN_LIST) == 0) { + snd_printk(KERN_WARNING "hda_codec: " + "connection list not available for 0x%x\n", nid); + return -EINVAL; + } + parm = snd_hda_param_read(codec, nid, AC_PAR_CONNLIST_LEN); if (parm & AC_CLIST_LONG) { /* long form */ |