diff options
author | Takashi Iwai <tiwai@suse.de> | 2012-05-09 14:35:27 +0200 |
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committer | Takashi Iwai <tiwai@suse.de> | 2012-11-28 09:03:39 +0100 |
commit | 361dab3ec2c59044f420cdf232523cd4af4e833e (patch) | |
tree | a15a6119c598e83bdb5ca45676907c6c0a3645cb /sound/pci/hda/patch_analog.c | |
parent | 04324ccc75f96b3ed7aad1c866d1b7925e977bdf (diff) | |
download | linux-361dab3ec2c59044f420cdf232523cd4af4e833e.tar.bz2 |
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>
Diffstat (limited to 'sound/pci/hda/patch_analog.c')
-rw-r--r-- | sound/pci/hda/patch_analog.c | 72 |
1 files changed, 38 insertions, 34 deletions
diff --git a/sound/pci/hda/patch_analog.c b/sound/pci/hda/patch_analog.c index eb5689df206a..89fc5030ec79 100644 --- a/sound/pci/hda/patch_analog.c +++ b/sound/pci/hda/patch_analog.c @@ -1246,16 +1246,27 @@ static int is_jack_available(struct hda_codec *codec, hda_nid_t nid) return get_defcfg_connect(conf) != AC_JACK_PORT_NONE; } -static int patch_ad1986a(struct hda_codec *codec) +static int alloc_ad_spec(struct hda_codec *codec) { struct ad198x_spec *spec; - int err, board_config; spec = kzalloc(sizeof(*spec), GFP_KERNEL); - if (spec == NULL) + if (!spec) return -ENOMEM; - codec->spec = spec; + snd_array_init(&spec->kctls, sizeof(struct snd_kcontrol_new), 32); + return 0; +} + +static int patch_ad1986a(struct hda_codec *codec) +{ + struct ad198x_spec *spec; + int err, board_config; + + err = alloc_ad_spec(codec); + if (err < 0) + return err; + spec = codec->spec; err = snd_hda_attach_beep_device(codec, 0x19); if (err < 0) { @@ -1548,11 +1559,10 @@ static int patch_ad1983(struct hda_codec *codec) struct ad198x_spec *spec; int err; - spec = kzalloc(sizeof(*spec), GFP_KERNEL); - if (spec == NULL) - return -ENOMEM; - - codec->spec = spec; + err = alloc_ad_spec(codec); + if (err < 0) + return err; + spec = codec->spec; err = snd_hda_attach_beep_device(codec, 0x10); if (err < 0) { @@ -1954,11 +1964,10 @@ static int patch_ad1981(struct hda_codec *codec) struct ad198x_spec *spec; int err, board_config; - spec = kzalloc(sizeof(*spec), GFP_KERNEL); - if (spec == NULL) + err = alloc_ad_spec(codec); + if (err < 0) return -ENOMEM; - - codec->spec = spec; + spec = codec->spec; err = snd_hda_attach_beep_device(codec, 0x10); if (err < 0) { @@ -2836,7 +2845,6 @@ static int add_control(struct ad198x_spec *spec, int type, const char *name, { struct snd_kcontrol_new *knew; - snd_array_init(&spec->kctls, sizeof(*knew), 32); knew = snd_array_new(&spec->kctls); if (!knew) return -ENOMEM; @@ -3254,11 +3262,10 @@ static int patch_ad1988(struct hda_codec *codec) struct ad198x_spec *spec; int err, board_config; - spec = kzalloc(sizeof(*spec), GFP_KERNEL); - if (spec == NULL) - return -ENOMEM; - - codec->spec = spec; + err = alloc_ad_spec(codec); + if (err < 0) + return err; + spec = codec->spec; if (is_rev2(codec)) snd_printk(KERN_INFO "patch_analog: AD1988A rev.2 is detected, enable workarounds\n"); @@ -3574,11 +3581,10 @@ static int patch_ad1884(struct hda_codec *codec) struct ad198x_spec *spec; int err; - spec = kzalloc(sizeof(*spec), GFP_KERNEL); - if (spec == NULL) - return -ENOMEM; - - codec->spec = spec; + err = alloc_ad_spec(codec); + if (err < 0) + return err; + spec = codec->spec; err = snd_hda_attach_beep_device(codec, 0x10); if (err < 0) { @@ -4574,11 +4580,10 @@ static int patch_ad1884a(struct hda_codec *codec) struct ad198x_spec *spec; int err, board_config; - spec = kzalloc(sizeof(*spec), GFP_KERNEL); - if (spec == NULL) - return -ENOMEM; - - codec->spec = spec; + err = alloc_ad_spec(codec); + if (err < 0) + return err; + spec = codec->spec; err = snd_hda_attach_beep_device(codec, 0x10); if (err < 0) { @@ -4987,11 +4992,10 @@ static int patch_ad1882(struct hda_codec *codec) struct ad198x_spec *spec; int err, board_config; - spec = kzalloc(sizeof(*spec), GFP_KERNEL); - if (spec == NULL) - return -ENOMEM; - - codec->spec = spec; + err = alloc_ad_spec(codec); + if (err < 0) + return err; + spec = codec->spec; err = snd_hda_attach_beep_device(codec, 0x10); if (err < 0) { |