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| author | Takashi Iwai <tiwai@suse.de> | 2015-10-01 17:59:43 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2015-10-15 14:05:28 +0200 |
| commit | ded255be2276d365a91af2de7c7f8e2c233d4fa2 (patch) | |
| tree | 4b12a3214ae05ccc3b1b31367c9cec53771cc251 /sound/hda/hdac_device.c | |
| parent | ALSA: hda - Enable widget power saving for Cirrus codecs (diff) | |
| download | linux-ded255be2276d365a91af2de7c7f8e2c233d4fa2.tar.xz linux-ded255be2276d365a91af2de7c7f8e2c233d4fa2.zip | |
ALSA: hda - consolidate chip rename functions
A few multiple codec drivers do renaming the chip_name string but all
these are open-coded and some of them have even no error check. Let's
make common helpers to do it properly.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/hda/hdac_device.c')
| -rw-r--r-- | sound/hda/hdac_device.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/sound/hda/hdac_device.c b/sound/hda/hdac_device.c index b3b0ad289df1..4b06b26cee06 100644 --- a/sound/hda/hdac_device.c +++ b/sound/hda/hdac_device.c @@ -164,6 +164,28 @@ void snd_hdac_device_unregister(struct hdac_device *codec) EXPORT_SYMBOL_GPL(snd_hdac_device_unregister); /** + * snd_hdac_device_set_chip_name - set/update the codec name + * @codec: the HDAC device + * @name: name string to set + * + * Returns 0 if the name is set or updated, or a negative error code. + */ +int snd_hdac_device_set_chip_name(struct hdac_device *codec, const char *name) +{ + char *newname; + + if (!name) + return 0; + newname = kstrdup(name, GFP_KERNEL); + if (!newname) + return -ENOMEM; + kfree(codec->chip_name); + codec->chip_name = newname; + return 0; +} +EXPORT_SYMBOL_GPL(snd_hdac_device_set_chip_name); + +/** * snd_hdac_make_cmd - compose a 32bit command word to be sent to the * HD-audio controller * @codec: the codec object |