xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

ALSA: hda - Build PCMs and controls at codec driver probe

Browse Source 
This makes the code flow easier -- instead of the controller driver
calling snd_hda_build_pcms() and snd_hda_build_controls() explicitly,
the codec driver itself builds PCMs and controls at probe time.  Then
the controller driver only needs to call snd_card_register().

Also, this allows us the full bind/unbind control, too.  Even when a
codec driver is bound later, it automatically registers the new PCM
and controls by itself.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai
2015-02-27 20:44:54 +01:00
parent 9a6246ff78
commit bcd96557bd
5 changed files with 17 additions and 94 deletions
Download Patch File Download Diff File Expand all files Collapse all files

22
sound/pci/hda/hda_bind.c
View File

@@ -106,16 +106,28 @@ static int hda_codec_driver_probe(struct device *dev)
}
err = codec->preset->patch(codec);
if (err < 0) {
module_put(owner);
goto error;
if (err < 0)
goto error_module;
err = snd_hda_codec_build_pcms(codec);
if (err < 0)
goto error_module;
err = snd_hda_codec_build_controls(codec);
if (err < 0)
goto error_module;
if (codec->card->registered) {
err = snd_card_register(codec->card);
if (err < 0)
goto error_module;
}
return 0;
error_module:
module_put(owner);
error:
codec->preset = NULL;
memset(&codec->patch_ops, 0, sizeof(codec->patch_ops));
snd_hda_codec_cleanup_for_unbind(codec);
return err;
}