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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>
This commit is contained in:
Jaroslav Kysela 2009-07-22 16:20:40 +02:00 committed by Takashi Iwai
parent 254da007f9
commit 16a433d8b3
3 changed files with 11 additions and 9 deletions
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6
sound/pci/hda/hda_codec.c
View File

@ -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 */

6
sound/pci/hda/patch_realtek.c
View File

@ -4501,12 +4501,6 @@ static int alc880_parse_auto_config(struct hda_codec *codec)
&dig_nid, 1);
if (err < 0)
continue;
if (dig_nid > 0x7f) {
printk(KERN_ERR "alc880_auto: invalid dig_nid "
"connection 0x%x for NID 0x%x\n", dig_nid,
spec->autocfg.dig_out_pins[i]);
continue;
}
if (!i)
spec->multiout.dig_out_nid = dig_nid;
else {

8
sound/pci/hda/patch_sigmatel.c
View File

@ -3389,7 +3389,7 @@ static int stac92xx_auto_create_mono_output_ctls(struct hda_codec *codec)
spec->mono_nid,
con_lst,
HDA_MAX_NUM_INPUTS);
if (!num_cons || num_cons > ARRAY_SIZE(stac92xx_mono_labels))
if (num_cons <= 0 || num_cons > ARRAY_SIZE(stac92xx_mono_labels))
return -EINVAL;
for (i = 0; i < num_cons; i++) {
@ -3535,7 +3535,7 @@ static int stac92xx_auto_create_spdif_mux_ctls(struct hda_codec *codec)
spec->smux_nids[0],
con_lst,
HDA_MAX_NUM_INPUTS);
if (!num_cons)
if (num_cons <= 0)
return -EINVAL;
if (!labels)
@ -3742,7 +3742,7 @@ static int stac92xx_parse_auto_config(struct hda_codec *codec, hda_nid_t dig_out
if (snd_hda_get_connections(codec,
spec->autocfg.mono_out_pin, conn_list, 1) &&
snd_hda_get_connections(codec, conn_list[0],
conn_list, 1)) {
conn_list, 1) > 0) {
int wcaps = get_wcaps(codec, conn_list[0]);
int wid_type = (wcaps & AC_WCAP_TYPE)
@ -5169,6 +5169,8 @@ again:
num_dacs = snd_hda_get_connections(codec, nid,
conn, STAC92HD83_DAC_COUNT + 1) - 1;
if (num_dacs < 0)
num_dacs = STAC92HD83_DAC_COUNT;
/* set port X to select the last DAC
*/