ALSA: hda - Call snd_array_init() early and only once
This is a preliminary patch for introducing a protection to access
races of snd_array instances. Call snd_array_init() appropriately
at the initialization time and don't call it twice.
Also the allocations of codec-spec structs are cleaned up by helper
functions in patch_sigmatel.c and patch_analog.c.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c
index 1f6fd58..df13c0f 100644
--- a/sound/pci/hda/patch_sigmatel.c
+++ b/sound/pci/hda/patch_sigmatel.c
@@ -2811,7 +2811,6 @@
{
struct snd_kcontrol_new *knew;
- snd_array_init(&spec->kctls, sizeof(*knew), 32);
knew = snd_array_new(&spec->kctls);
if (!knew)
return NULL;
@@ -5159,20 +5158,34 @@
.reboot_notify = stac92xx_shutup,
};
+static int alloc_stac_spec(struct hda_codec *codec, int num_pins,
+ const hda_nid_t *pin_nids)
+{
+ struct sigmatel_spec *spec;
+
+ spec = kzalloc(sizeof(*spec), GFP_KERNEL);
+ if (!spec)
+ return -ENOMEM;
+ codec->spec = spec;
+ codec->no_trigger_sense = 1; /* seems common with STAC/IDT codecs */
+ spec->num_pins = num_pins;
+ spec->pin_nids = pin_nids;
+ snd_array_init(&spec->kctls, sizeof(struct snd_kcontrol_new), 32);
+ return 0;
+}
+
static int patch_stac9200(struct hda_codec *codec)
{
struct sigmatel_spec *spec;
int err;
- spec = kzalloc(sizeof(*spec), GFP_KERNEL);
- if (spec == NULL)
- return -ENOMEM;
+ err = alloc_stac_spec(codec, ARRAY_SIZE(stac9200_pin_nids),
+ stac9200_pin_nids);
+ if (err < 0)
+ return err;
- codec->no_trigger_sense = 1;
- codec->spec = spec;
+ spec = codec->spec;
spec->linear_tone_beep = 1;
- spec->num_pins = ARRAY_SIZE(stac9200_pin_nids);
- spec->pin_nids = stac9200_pin_nids;
spec->board_config = snd_hda_check_board_config(codec, STAC_9200_MODELS,
stac9200_models,
stac9200_cfg_tbl);
@@ -5228,15 +5241,13 @@
struct sigmatel_spec *spec;
int err;
- spec = kzalloc(sizeof(*spec), GFP_KERNEL);
- if (spec == NULL)
- return -ENOMEM;
+ err = alloc_stac_spec(codec, ARRAY_SIZE(stac925x_pin_nids),
+ stac925x_pin_nids);
+ if (err < 0)
+ return err;
- codec->no_trigger_sense = 1;
- codec->spec = spec;
+ spec = codec->spec;
spec->linear_tone_beep = 1;
- spec->num_pins = ARRAY_SIZE(stac925x_pin_nids);
- spec->pin_nids = stac925x_pin_nids;
/* Check first for codec ID */
spec->board_config = snd_hda_check_board_codec_sid_config(codec,
@@ -5311,19 +5322,17 @@
{
struct sigmatel_spec *spec;
hda_nid_t conn[STAC92HD73_DAC_COUNT + 2];
- int err = 0;
+ int err;
int num_dacs;
- spec = kzalloc(sizeof(*spec), GFP_KERNEL);
- if (spec == NULL)
- return -ENOMEM;
+ err = alloc_stac_spec(codec, ARRAY_SIZE(stac92hd73xx_pin_nids),
+ stac92hd73xx_pin_nids);
+ if (err < 0)
+ return err;
- codec->no_trigger_sense = 1;
- codec->spec = spec;
+ spec = codec->spec;
spec->linear_tone_beep = 0;
codec->slave_dig_outs = stac92hd73xx_slave_dig_outs;
- spec->num_pins = ARRAY_SIZE(stac92hd73xx_pin_nids);
- spec->pin_nids = stac92hd73xx_pin_nids;
spec->board_config = snd_hda_check_board_config(codec,
STAC_92HD73XX_MODELS,
stac92hd73xx_models,
@@ -5600,9 +5609,9 @@
int default_polarity = -1; /* no default cfg */
int err;
- spec = kzalloc(sizeof(*spec), GFP_KERNEL);
- if (spec == NULL)
- return -ENOMEM;
+ err = alloc_stac_spec(codec, 0, NULL); /* pins filled later */
+ if (err < 0)
+ return err;
if (hp_bnb2011_with_dock(codec)) {
snd_hda_codec_set_pincfg(codec, 0xa, 0x2101201f);
@@ -5610,11 +5619,9 @@
}
codec->epss = 0; /* longer delay needed for D3 */
- codec->no_trigger_sense = 1;
- codec->spec = spec;
-
stac92hd8x_fill_auto_spec(codec);
+ spec = codec->spec;
spec->linear_tone_beep = 0;
codec->slave_dig_outs = stac92hd83xxx_slave_dig_outs;
spec->digbeep_nid = 0x21;
@@ -5783,21 +5790,19 @@
struct sigmatel_spec *spec;
const struct hda_verb *unmute_init = stac92hd71bxx_unmute_core_init;
unsigned int pin_cfg;
- int err = 0;
+ int err;
- spec = kzalloc(sizeof(*spec), GFP_KERNEL);
- if (spec == NULL)
- return -ENOMEM;
+ err = alloc_stac_spec(codec, STAC92HD71BXX_NUM_PINS,
+ stac92hd71bxx_pin_nids_4port);
+ if (err < 0)
+ return err;
- codec->no_trigger_sense = 1;
- codec->spec = spec;
+ spec = codec->spec;
spec->linear_tone_beep = 0;
codec->patch_ops = stac92xx_patch_ops;
- spec->num_pins = STAC92HD71BXX_NUM_PINS;
switch (codec->vendor_id) {
case 0x111d76b6:
case 0x111d76b7:
- spec->pin_nids = stac92hd71bxx_pin_nids_4port;
break;
case 0x111d7603:
case 0x111d7608:
@@ -6028,15 +6033,13 @@
struct sigmatel_spec *spec;
int err;
- spec = kzalloc(sizeof(*spec), GFP_KERNEL);
- if (spec == NULL)
- return -ENOMEM;
+ err = alloc_stac_spec(codec, ARRAY_SIZE(stac922x_pin_nids),
+ stac922x_pin_nids);
+ if (err < 0)
+ return err;
- codec->no_trigger_sense = 1;
- codec->spec = spec;
+ spec = codec->spec;
spec->linear_tone_beep = 1;
- spec->num_pins = ARRAY_SIZE(stac922x_pin_nids);
- spec->pin_nids = stac922x_pin_nids;
spec->board_config = snd_hda_check_board_config(codec, STAC_922X_MODELS,
stac922x_models,
stac922x_cfg_tbl);
@@ -6133,16 +6136,14 @@
struct sigmatel_spec *spec;
int err;
- spec = kzalloc(sizeof(*spec), GFP_KERNEL);
- if (spec == NULL)
- return -ENOMEM;
+ err = alloc_stac_spec(codec, ARRAY_SIZE(stac927x_pin_nids),
+ stac927x_pin_nids);
+ if (err < 0)
+ return err;
- codec->no_trigger_sense = 1;
- codec->spec = spec;
+ spec = codec->spec;
spec->linear_tone_beep = 1;
codec->slave_dig_outs = stac927x_slave_dig_outs;
- spec->num_pins = ARRAY_SIZE(stac927x_pin_nids);
- spec->pin_nids = stac927x_pin_nids;
spec->board_config = snd_hda_check_board_config(codec, STAC_927X_MODELS,
stac927x_models,
stac927x_cfg_tbl);
@@ -6269,15 +6270,13 @@
struct sigmatel_spec *spec;
int err;
- spec = kzalloc(sizeof(*spec), GFP_KERNEL);
- if (spec == NULL)
- return -ENOMEM;
+ err = alloc_stac_spec(codec, ARRAY_SIZE(stac9205_pin_nids),
+ stac9205_pin_nids);
+ if (err < 0)
+ return err;
- codec->no_trigger_sense = 1;
- codec->spec = spec;
+ spec = codec->spec;
spec->linear_tone_beep = 1;
- spec->num_pins = ARRAY_SIZE(stac9205_pin_nids);
- spec->pin_nids = stac9205_pin_nids;
spec->board_config = snd_hda_check_board_config(codec, STAC_9205_MODELS,
stac9205_models,
stac9205_cfg_tbl);
@@ -6425,14 +6424,13 @@
struct sigmatel_spec *spec;
int err;
- spec = kzalloc(sizeof(*spec), GFP_KERNEL);
- if (spec == NULL)
- return -ENOMEM;
- codec->no_trigger_sense = 1;
- codec->spec = spec;
+ err = alloc_stac_spec(codec, ARRAY_SIZE(stac9872_pin_nids),
+ stac9872_pin_nids);
+ if (err < 0)
+ return err;
+
+ spec = codec->spec;
spec->linear_tone_beep = 1;
- spec->num_pins = ARRAY_SIZE(stac9872_pin_nids);
- spec->pin_nids = stac9872_pin_nids;
spec->board_config = snd_hda_check_board_config(codec, STAC_9872_MODELS,
stac9872_models,