[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>
diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c
index 36d6765..a998f88 100644
--- a/sound/core/pcm_native.c
+++ b/sound/core/pcm_native.c
@@ -372,7 +372,7 @@
#if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE)
if (!substream->oss.oss)
#endif
- if (atomic_read(&runtime->mmap_count))
+ if (atomic_read(&substream->mmap_count))
return -EBADFD;
params->rmask = ~0U;
@@ -485,7 +485,7 @@
return -EBADFD;
}
snd_pcm_stream_unlock_irq(substream);
- if (atomic_read(&runtime->mmap_count))
+ if (atomic_read(&substream->mmap_count))
return -EBADFD;
if (substream->ops->hw_free)
result = substream->ops->hw_free(substream);
@@ -2207,7 +2207,7 @@
pcm_file = file->private_data;
substream = pcm_file->substream;
snd_assert(substream != NULL, return -ENXIO);
- snd_assert(!atomic_read(&substream->runtime->mmap_count), );
+ snd_assert(!atomic_read(&substream->mmap_count), );
pcm = substream->pcm;
fasync_helper(-1, file, 0, &substream->runtime->fasync);
mutex_lock(&pcm->open_mutex);
@@ -3178,7 +3178,7 @@
area->vm_ops = &snd_pcm_vm_ops_data;
area->vm_private_data = substream;
area->vm_flags |= VM_RESERVED;
- atomic_inc(&substream->runtime->mmap_count);
+ atomic_inc(&substream->mmap_count);
return 0;
}
@@ -3210,7 +3210,7 @@
(substream->runtime->dma_addr + offset) >> PAGE_SHIFT,
size, area->vm_page_prot))
return -EAGAIN;
- atomic_inc(&substream->runtime->mmap_count);
+ atomic_inc(&substream->mmap_count);
return 0;
}