diff options
Diffstat (limited to 'drivers/media/v4l2-core/videobuf-dma-sg.c')
| -rw-r--r-- | drivers/media/v4l2-core/videobuf-dma-sg.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/media/v4l2-core/videobuf-dma-sg.c b/drivers/media/v4l2-core/videobuf-dma-sg.c index 13b65ed9e74c..46ff19df9f53 100644 --- a/drivers/media/v4l2-core/videobuf-dma-sg.c +++ b/drivers/media/v4l2-core/videobuf-dma-sg.c @@ -21,13 +21,13 @@ #include <linux/sched/mm.h> #include <linux/slab.h> #include <linux/interrupt.h> +#include <linux/pgtable.h> #include <linux/dma-mapping.h> #include <linux/vmalloc.h> #include <linux/pagemap.h> #include <linux/scatterlist.h> #include <asm/page.h> -#include <asm/pgtable.h> #include <media/videobuf-dma-sg.h> @@ -200,9 +200,9 @@ static int videobuf_dma_init_user(struct videobuf_dmabuf *dma, int direction, { int ret; - down_read(¤t->mm->mmap_sem); + mmap_read_lock(current->mm); ret = videobuf_dma_init_user_locked(dma, direction, data, size); - up_read(¤t->mm->mmap_sem); + mmap_read_unlock(current->mm); return ret; } @@ -533,7 +533,7 @@ static int __videobuf_iolock(struct videobuf_queue *q, } else { /* NOTE: HACK: videobuf_iolock on V4L2_MEMORY_MMAP buffers can only be called from videobuf_qbuf - we take current->mm->mmap_sem there, to prevent + we take current->mm->mmap_lock there, to prevent locking inversion, so don't take it here */ err = videobuf_dma_init_user_locked(&mem->dma, |