X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=drivers%2Fmedia%2Fv4l2-core%2Fvideobuf2-core.c;h=4f59b7ec05d0fe7261312082d7ee2c2e17453b53;hb=06a660ada2064bbdcd09aeb8173f2ad128c71978;hp=f1022d810d2208f92057b3cf25eddabd5973aa90;hpb=d9b44fe30fb8637b23f804eab2e7afbce129d714;p=platform%2Fkernel%2Flinux-rpi.git

diff --git a/drivers/media/v4l2-core/videobuf2-core.c b/drivers/media/v4l2-core/videobuf2-core.c
index f1022d8..4f59b7e 100644
--- a/drivers/media/v4l2-core/videobuf2-core.c
+++ b/drivers/media/v4l2-core/videobuf2-core.c
@@ -1691,9 +1691,7 @@ static int __buf_prepare(struct vb2_buffer *vb, const struct v4l2_buffer *b)
 		ret = __qbuf_mmap(vb, b);
 		break;
 	case V4L2_MEMORY_USERPTR:
-		down_read(&current->mm->mmap_sem);
 		ret = __qbuf_userptr(vb, b);
-		up_read(&current->mm->mmap_sem);
 		break;
 	case V4L2_MEMORY_DMABUF:
 		ret = __qbuf_dmabuf(vb, b);