ALSA: ac97: fix device initialization in the compat layer
ac97->dev is an object of 'struct device' type. It should be initialized
via device_initialize() or device_register().
Fixes: 74426fbff66e ("ALSA: ac97: add an ac97 bus")
Signed-off-by: Lihua Yao <ylhuajnu@163.com>
Tested-by: Robert Jarzmik <robert.jarzmik@free.fr>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/ac97/snd_ac97_compat.c b/sound/ac97/snd_ac97_compat.c
index 61544e0..8bab44f 100644
--- a/sound/ac97/snd_ac97_compat.c
+++ b/sound/ac97/snd_ac97_compat.c
@@ -15,6 +15,11 @@
#include "ac97_core.h"
+static void compat_ac97_release(struct device *dev)
+{
+ kfree(to_ac97_t(dev));
+}
+
static void compat_ac97_reset(struct snd_ac97 *ac97)
{
struct ac97_codec_device *adev = to_ac97_device(ac97->private_data);
@@ -65,21 +70,31 @@ static struct snd_ac97_bus compat_soc_ac97_bus = {
struct snd_ac97 *snd_ac97_compat_alloc(struct ac97_codec_device *adev)
{
struct snd_ac97 *ac97;
+ int ret;
ac97 = kzalloc(sizeof(struct snd_ac97), GFP_KERNEL);
if (ac97 == NULL)
return ERR_PTR(-ENOMEM);
- ac97->dev = adev->dev;
ac97->private_data = adev;
ac97->bus = &compat_soc_ac97_bus;
+
+ ac97->dev.parent = &adev->dev;
+ ac97->dev.release = compat_ac97_release;
+ dev_set_name(&ac97->dev, "%s-compat", dev_name(&adev->dev));
+ ret = device_register(&ac97->dev);
+ if (ret) {
+ put_device(&ac97->dev);
+ return ERR_PTR(ret);
+ }
+
return ac97;
}
EXPORT_SYMBOL_GPL(snd_ac97_compat_alloc);
void snd_ac97_compat_release(struct snd_ac97 *ac97)
{
- kfree(ac97);
+ device_unregister(&ac97->dev);
}
EXPORT_SYMBOL_GPL(snd_ac97_compat_release);
