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[ALSA] Fix Oops of PCM OSS emulation 

Modules: PCM Midlevel,ALSA<-OSS emulation

Fix Oops of PCM OSS emulation occuring when multiple playback is used.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
hifive-unleashed-5.1
Takashi Iwai 2006-04-06 19:47:42 +02:00 committed by Jaroslav Kysela
parent bbdc1b7dbe
commit 1576274d30
3 changed files with 8 additions and 5 deletions
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2
include/sound/pcm.h
View File

@ -367,7 +367,7 @@ struct snd_pcm_substream {
struct snd_pcm_group self_group; /* fake group for non linked substream (with substream lock inside) */
struct snd_pcm_group *group; /* pointer to current group */
/* -- assigned files -- */
struct snd_pcm_file *file;
void *file;
struct file *ffile;
void (*pcm_release)(struct snd_pcm_substream *);
#if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE)

5
sound/core/oss/pcm_oss.c
View File

@ -1682,7 +1682,7 @@ static void snd_pcm_oss_init_substream(struct snd_pcm_substream *substream,
substream->oss.setup = *setup;
if (setup->nonblock)
substream->ffile->f_flags |= O_NONBLOCK;
else
else if (setup->block)
substream->ffile->f_flags &= ~O_NONBLOCK;
runtime = substream->runtime;
runtime->oss.params = 1;
@ -1757,6 +1757,7 @@ static int snd_pcm_oss_open_file(struct file *file,
}
pcm_oss_file->streams[idx] = substream;
substream->file = pcm_oss_file;
snd_pcm_oss_init_substream(substream, &setup[idx], minor);
}
@ -1809,7 +1810,7 @@ static int snd_pcm_oss_open(struct inode *inode, struct file *file)
err = -EFAULT;
goto __error;
}
memset(setup, 0, sizeof(*setup));
memset(setup, 0, sizeof(setup));
if (file->f_mode & FMODE_WRITE)
snd_pcm_oss_look_for_setup(pcm, SNDRV_PCM_STREAM_PLAYBACK,
task_name, &setup[0]);

6
sound/core/pcm_native.c
View File

@ -2007,14 +2007,16 @@ static void pcm_release_private(struct snd_pcm_substream *substream)
void snd_pcm_release_substream(struct snd_pcm_substream *substream)
{
snd_pcm_drop(substream);
if (substream->pcm_release)
substream->pcm_release(substream);
if (substream->hw_opened) {
if (substream->ops->hw_free != NULL)
substream->ops->hw_free(substream);
substream->ops->close(substream);
substream->hw_opened = 0;
}
if (substream->pcm_release) {
substream->pcm_release(substream);
substream->pcm_release = NULL;
}
snd_pcm_detach_substream(substream);
}