diff options
Diffstat (limited to 'drivers/media/v4l2-core/videobuf2-dma-sg.c')
| -rw-r--r-- | drivers/media/v4l2-core/videobuf2-dma-sg.c | 6 |
1 files changed, 0 insertions, 6 deletions
diff --git a/drivers/media/v4l2-core/videobuf2-dma-sg.c b/drivers/media/v4l2-core/videobuf2-dma-sg.c index d7bcb05c7058..7289b81bd7b7 100644 --- a/drivers/media/v4l2-core/videobuf2-dma-sg.c +++ b/drivers/media/v4l2-core/videobuf2-dma-sg.c @@ -264,7 +264,6 @@ static void *vb2_dma_sg_get_userptr(void *alloc_ctx, unsigned long vaddr, if (!buf->pages) goto userptr_fail_alloc_pages; - down_read(¤t->mm->mmap_sem); vma = find_vma(current->mm, vaddr); if (!vma) { dprintk(1, "no vma for address %lu\n", vaddr); @@ -303,7 +302,6 @@ 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->num_pages) goto userptr_fail_get_user_pages; @@ -333,10 +331,8 @@ userptr_fail_get_user_pages: if (!vma_is_io(buf->vma)) while (--num_pages_from_user >= 0) put_page(buf->pages[num_pages_from_user]); - down_read(¤t->mm->mmap_sem); vb2_put_vma(buf->vma); userptr_fail_find_vma: - up_read(¤t->mm->mmap_sem); kfree(buf->pages); userptr_fail_alloc_pages: kfree(buf); @@ -370,9 +366,7 @@ static void vb2_dma_sg_put_userptr(void *buf_priv) put_page(buf->pages[i]); } kfree(buf->pages); - down_read(¤t->mm->mmap_sem); vb2_put_vma(buf->vma); - up_read(¤t->mm->mmap_sem); kfree(buf); } |