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| author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2012-03-09 10:55:17 -0800 |
|---|---|---|
| committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2012-03-09 10:55:17 -0800 |
| commit | b675b3667f6729dcd1036a2a129b35445947f905 (patch) | |
| tree | 0d58791e9063d3ca2c352da6f3e7df2bdb876f9d /drivers/media/video/videobuf2-dma-sg.c | |
| parent | 104a5f3cad8f2f27cadbdf0029400ecd9e17ccc0 (diff) | |
| parent | 192cfd58774b4d17b2fe8bdc77d89c2ef4e0591d (diff) | |
Merge commit 'v3.3-rc6' into next
Diffstat (limited to 'drivers/media/video/videobuf2-dma-sg.c')
| -rw-r--r-- | drivers/media/video/videobuf2-dma-sg.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/media/video/videobuf2-dma-sg.c b/drivers/media/video/videobuf2-dma-sg.c index 3bad8b105fe..25c3b360e1a 100644 --- a/drivers/media/video/videobuf2-dma-sg.c +++ b/drivers/media/video/videobuf2-dma-sg.c @@ -140,7 +140,6 @@ static void *vb2_dma_sg_get_userptr(void *alloc_ctx, unsigned long vaddr, if (!buf->pages) goto userptr_fail_pages_array_alloc; - down_read(¤t->mm->mmap_sem); num_pages_from_user = get_user_pages(current, current->mm, vaddr & PAGE_MASK, buf->sg_desc.num_pages, @@ -148,7 +147,7 @@ static void *vb2_dma_sg_get_userptr(void *alloc_ctx, unsigned long vaddr, 1, /* force */ buf->pages, NULL); - up_read(¤t->mm->mmap_sem); + if (num_pages_from_user != buf->sg_desc.num_pages) goto userptr_fail_get_user_pages; |