diff options
| author | H. Peter Anvin <hpa@linux.intel.com> | 2012-01-19 12:56:50 -0800 |
|---|---|---|
| committer | H. Peter Anvin <hpa@linux.intel.com> | 2012-01-19 12:56:50 -0800 |
| commit | 282f445a779ed76fca9884fe377bf56a3088b208 (patch) | |
| tree | d9abcf526baee0100672851e0a8894c19e762a39 /drivers/media/video/videobuf2-dma-sg.c | |
| parent | 68f30fbee19cc67849b9fa8e153ede70758afe81 (diff) | |
| parent | 90a4c0f51e8e44111a926be6f4c87af3938a79c3 (diff) | |
Merge remote-tracking branch 'linus/master' into x86/urgent
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; |