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ALSA: add private_data to struct snd_jack 

Added private_data and private_free fields to struct snd_jack so that
the caller can assign the data.  It'll be helpful for avoiding the
double-free of the jack instance.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2009-04-14 16:13:58 +02:00
parent 577c9c456f
commit 9d59065cd6
2 changed files with 5 additions and 0 deletions
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2
include/sound/jack.h
View File

@ -50,6 +50,8 @@ struct snd_jack {
int type;
const char *id;
char name[100];
void *private_data;
void (*private_free)(struct snd_jack *);
};
#ifdef CONFIG_SND_JACK

3
sound/core/jack.c
View File

@ -35,6 +35,9 @@ static int snd_jack_dev_free(struct snd_device *device)
{
struct snd_jack *jack = device->device_data;
if (jack->private_free)
jack->private_free(jack);
/* If the input device is registered with the input subsystem
* then we need to use a different deallocator. */
if (jack->registered)