diff mbox series

[v4,15/21] dma-buf: Move dma_buf_vmap() to dynamic locking specification

Message ID 20220831153757.97381-16-dmitry.osipenko@collabora.com (mailing list archive)
State Superseded
Headers show
Series Move all drivers to a common dma-buf locking convention | expand

Commit Message

Dmitry Osipenko Aug. 31, 2022, 3:37 p.m. UTC 
Move dma_buf_vmap/vunmap_unlocked() functions to the dynamic locking
specification by asserting that the reservation lock is held.

Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
---
 drivers/dma-buf/dma-buf.c | 4 ++++
 1 file changed, 4 insertions(+)
diff mbox series

Patch

diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c
index 51fb69048853..ceea4839c641 100644
--- a/drivers/dma-buf/dma-buf.c
+++ b/drivers/dma-buf/dma-buf.c
@@ -1449,6 +1449,8 @@  int dma_buf_vmap(struct dma_buf *dmabuf, struct iosys_map *map)
 	if (WARN_ON(!dmabuf))
 		return -EINVAL;
 
+	dma_resv_assert_held(dmabuf->resv);
+
 	if (!dmabuf->ops->vmap)
 		return -EINVAL;
 
@@ -1509,6 +1511,8 @@  void dma_buf_vunmap(struct dma_buf *dmabuf, struct iosys_map *map)
 	if (WARN_ON(!dmabuf))
 		return;
 
+	dma_resv_assert_held(dmabuf->resv);
+
 	BUG_ON(iosys_map_is_null(&dmabuf->vmap_ptr));
 	BUG_ON(dmabuf->vmapping_counter == 0);
 	BUG_ON(!iosys_map_is_equal(&dmabuf->vmap_ptr, map));