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| author | Sage Weil <sage@inktank.com> | 2013-08-15 11:11:45 -0700 |
|---|---|---|
| committer | Sage Weil <sage@inktank.com> | 2013-08-15 11:11:45 -0700 |
| commit | ee3e542fec6e69bc9fb668698889a37d93950ddf (patch) | |
| tree | e74ee766a4764769ef1d3d45d266b4dea64101d3 /drivers/media/v4l2-core/videobuf-vmalloc.c | |
| parent | fe2a801b50c0bb8039d627e5ae1fec249d10ff39 (diff) | |
| parent | f1d6e17f540af37bb1891480143669ba7636c4cf (diff) | |
Merge remote-tracking branch 'linus/master' into testing
Diffstat (limited to 'drivers/media/v4l2-core/videobuf-vmalloc.c')
| -rw-r--r-- | drivers/media/v4l2-core/videobuf-vmalloc.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/drivers/media/v4l2-core/videobuf-vmalloc.c b/drivers/media/v4l2-core/videobuf-vmalloc.c index 2ff7fcc77b1..1365c651c17 100644 --- a/drivers/media/v4l2-core/videobuf-vmalloc.c +++ b/drivers/media/v4l2-core/videobuf-vmalloc.c @@ -54,11 +54,14 @@ MODULE_LICENSE("GPL"); static void videobuf_vm_open(struct vm_area_struct *vma) { struct videobuf_mapping *map = vma->vm_private_data; + struct videobuf_queue *q = map->q; dprintk(2, "vm_open %p [count=%u,vma=%08lx-%08lx]\n", map, map->count, vma->vm_start, vma->vm_end); + videobuf_queue_lock(q); map->count++; + videobuf_queue_unlock(q); } static void videobuf_vm_close(struct vm_area_struct *vma) @@ -70,12 +73,11 @@ static void videobuf_vm_close(struct vm_area_struct *vma) dprintk(2, "vm_close %p [count=%u,vma=%08lx-%08lx]\n", map, map->count, vma->vm_start, vma->vm_end); - map->count--; - if (0 == map->count) { + videobuf_queue_lock(q); + if (!--map->count) { struct videobuf_vmalloc_memory *mem; dprintk(1, "munmap %p q=%p\n", map, q); - videobuf_queue_lock(q); /* We need first to cancel streams, before unmapping */ if (q->streaming) @@ -114,8 +116,8 @@ static void videobuf_vm_close(struct vm_area_struct *vma) kfree(map); - videobuf_queue_unlock(q); } + videobuf_queue_unlock(q); return; } |