diff options
| author |   José Pekkarinen <jose.pekkarinen@nokia.com> | 2016-04-11 10:41:07 +0300 |
|---|---|---|
| committer | José Pekkarinen <jose.pekkarinen@nokia.com> | 2016-04-13 08:17:18 +0300 |
| commit | e09b41010ba33a20a87472ee821fa407a5b8da36 (patch) | |
| tree | d10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/sound/soc/soc-ac97.c | |
| parent | f93b97fd65072de626c074dbe099a1fff05ce060 (diff) | |
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page.
During the rebasing, the following patch collided:
Force tick interrupt and get rid of softirq magic(I70131fb85).
Collisions have been removed because its logic was found on the
source already.
Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/sound/soc/soc-ac97.c')
| -rw-r--r-- | kernel/sound/soc/soc-ac97.c | 30 |
1 files changed, 25 insertions, 5 deletions
diff --git a/kernel/sound/soc/soc-ac97.c b/kernel/sound/soc/soc-ac97.c index 08d7259bb..d40efc9fe 100644 --- a/kernel/sound/soc/soc-ac97.c +++ b/kernel/sound/soc/soc-ac97.c @@ -85,10 +85,19 @@ EXPORT_SYMBOL(snd_soc_alloc_ac97_codec); /** * snd_soc_new_ac97_codec - initailise AC97 device * @codec: audio codec + * @id: The expected device ID + * @id_mask: Mask that is applied to the device ID before comparing with @id * * Initialises AC97 codec resources for use by ad-hoc devices only. + * + * If @id is not 0 this function will reset the device, then read the ID from + * the device and check if it matches the expected ID. If it doesn't match an + * error will be returned and device will not be registered. + * + * Returns: A PTR_ERR() on failure or a valid snd_ac97 struct on success. */ -struct snd_ac97 *snd_soc_new_ac97_codec(struct snd_soc_codec *codec) +struct snd_ac97 *snd_soc_new_ac97_codec(struct snd_soc_codec *codec, + unsigned int id, unsigned int id_mask) { struct snd_ac97 *ac97; int ret; @@ -97,13 +106,24 @@ struct snd_ac97 *snd_soc_new_ac97_codec(struct snd_soc_codec *codec) if (IS_ERR(ac97)) return ac97; - ret = device_add(&ac97->dev); - if (ret) { - put_device(&ac97->dev); - return ERR_PTR(ret); + if (id) { + ret = snd_ac97_reset(ac97, false, id, id_mask); + if (ret < 0) { + dev_err(codec->dev, "Failed to reset AC97 device: %d\n", + ret); + goto err_put_device; + } } + ret = device_add(&ac97->dev); + if (ret) + goto err_put_device; + return ac97; + +err_put_device: + put_device(&ac97->dev); + return ERR_PTR(ret); } EXPORT_SYMBOL_GPL(snd_soc_new_ac97_codec); |