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path: root/drivers/dma-buf
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Diffstat (limited to 'drivers/dma-buf')
-rw-r--r--drivers/dma-buf/heaps/cma_heap.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/dma-buf/heaps/cma_heap.c b/drivers/dma-buf/heaps/cma_heap.c
index 0c05b79870f9..83f02bd51dda 100644
--- a/drivers/dma-buf/heaps/cma_heap.c
+++ b/drivers/dma-buf/heaps/cma_heap.c
@@ -124,10 +124,11 @@ static int cma_heap_dma_buf_begin_cpu_access(struct dma_buf *dmabuf,
struct cma_heap_buffer *buffer = dmabuf->priv;
struct dma_heap_attachment *a;
+ mutex_lock(&buffer->lock);
+
if (buffer->vmap_cnt)
invalidate_kernel_vmap_range(buffer->vaddr, buffer->len);
- mutex_lock(&buffer->lock);
list_for_each_entry(a, &buffer->attachments, list) {
if (!a->mapped)
continue;
@@ -144,10 +145,11 @@ static int cma_heap_dma_buf_end_cpu_access(struct dma_buf *dmabuf,
struct cma_heap_buffer *buffer = dmabuf->priv;
struct dma_heap_attachment *a;
+ mutex_lock(&buffer->lock);
+
if (buffer->vmap_cnt)
flush_kernel_vmap_range(buffer->vaddr, buffer->len);
- mutex_lock(&buffer->lock);
list_for_each_entry(a, &buffer->attachments, list) {
if (!a->mapped)
continue;