Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

tools/lib/bpf/ringbuf.c
  927cbb478adf ("libbpf: Handle size overflow for ringbuf mmap")
  b486d19a0ab0 ("libbpf: checkpatch: Fixed code alignments in ringbuf.c")
https://lore.kernel.org/all/[email protected]/

Signed-off-by: Jakub Kicinski <[email protected]>

1 files changed, 17 insertions, 6 deletions

diff --git a/drivers/dma-buf/dma-buf.c b/drivers/dma-buf/dma-buf.c
index dd0f83ee505b..e6f36c014c4c 100644
--- a/drivers/dma-buf/dma-buf.c
+++ b/drivers/dma-buf/dma-buf.c
@@ -15,6 +15,7 @@
 #include <linux/slab.h>
 #include <linux/dma-buf.h>
 #include <linux/dma-fence.h>
+#include <linux/dma-fence-unwrap.h>
 #include <linux/anon_inodes.h>
 #include <linux/export.h>
 #include <linux/debugfs.h>
@@ -391,8 +392,10 @@ static long dma_buf_import_sync_file(struct dma_buf *dmabuf,
 				     const void __user *user_data)
 {
 	struct dma_buf_import_sync_file arg;
-	struct dma_fence *fence;
+	struct dma_fence *fence, *f;
 	enum dma_resv_usage usage;
+	struct dma_fence_unwrap iter;
+	unsigned int num_fences;
 	int ret = 0;
 
 	if (copy_from_user(&arg, user_data, sizeof(arg)))
@@ -411,13 +414,21 @@ static long dma_buf_import_sync_file(struct dma_buf *dmabuf,
 	usage = (arg.flags & DMA_BUF_SYNC_WRITE) ? DMA_RESV_USAGE_WRITE :
 						   DMA_RESV_USAGE_READ;
 
-	dma_resv_lock(dmabuf->resv, NULL);
+	num_fences = 0;
+	dma_fence_unwrap_for_each(f, &iter, fence)
+		++num_fences;
 
-	ret = dma_resv_reserve_fences(dmabuf->resv, 1);
-	if (!ret)
-		dma_resv_add_fence(dmabuf->resv, fence, usage);
+	if (num_fences > 0) {
+		dma_resv_lock(dmabuf->resv, NULL);
 
-	dma_resv_unlock(dmabuf->resv);
+		ret = dma_resv_reserve_fences(dmabuf->resv, num_fences);
+		if (!ret) {
+			dma_fence_unwrap_for_each(f, &iter, fence)
+				dma_resv_add_fence(dmabuf->resv, f, usage);
+		}
+
+		dma_resv_unlock(dmabuf->resv);
+	}
 
 	dma_fence_put(fence);