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authorTakashi Iwai <tiwai@suse.de>2006-04-28 17:13:41 +0400
committerJaroslav Kysela <perex@suse.cz>2006-06-22 23:33:14 +0400
commit9c323fcbc51493f79f9700cb20830d0857c72d99 (patch)
tree17e17046c0642f918b9516de8d9517914cabd0ad /include/sound/pcm.h
parent0df63e44c3e315ec0fe427ae62558231864108bd (diff)
downloadlinux-9c323fcbc51493f79f9700cb20830d0857c72d99.tar.xz
[ALSA] Fix mmap_count with O_APPEND opened streams
Move mmap_count to snd_pcm_substream instead of runtime struct so that multiplly opened substreams via O_APPEND can be handled correctly. Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'include/sound/pcm.h')
-rw-r--r--include/sound/pcm.h6
1 files changed, 3 insertions, 3 deletions
diff --git a/include/sound/pcm.h b/include/sound/pcm.h
index cebf0310a8dc..f84d84993a31 100644
--- a/include/sound/pcm.h
+++ b/include/sound/pcm.h
@@ -300,7 +300,6 @@ struct snd_pcm_runtime {
/* -- mmap -- */
volatile struct snd_pcm_mmap_status *status;
volatile struct snd_pcm_mmap_control *control;
- atomic_t mmap_count;
/* -- locking / scheduling -- */
wait_queue_head_t sleep;
@@ -369,6 +368,7 @@ struct snd_pcm_substream {
/* -- assigned files -- */
void *file;
int ref_count;
+ atomic_t mmap_count;
unsigned int f_flags;
void (*pcm_release)(struct snd_pcm_substream *);
#if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE)
@@ -972,13 +972,13 @@ struct page *snd_pcm_sgbuf_ops_page(struct snd_pcm_substream *substream, unsigne
static inline void snd_pcm_mmap_data_open(struct vm_area_struct *area)
{
struct snd_pcm_substream *substream = (struct snd_pcm_substream *)area->vm_private_data;
- atomic_inc(&substream->runtime->mmap_count);
+ atomic_inc(&substream->mmap_count);
}
static inline void snd_pcm_mmap_data_close(struct vm_area_struct *area)
{
struct snd_pcm_substream *substream = (struct snd_pcm_substream *)area->vm_private_data;
- atomic_dec(&substream->runtime->mmap_count);
+ atomic_dec(&substream->mmap_count);
}
/* mmap for io-memory area */