diff options
Diffstat (limited to 'drivers/dma-buf/heaps/cma_heap.c')
-rw-r--r-- | drivers/dma-buf/heaps/cma_heap.c | 6 |
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 de4d10b30339..8a19859d3c7e 100644 --- a/drivers/dma-buf/heaps/cma_heap.c +++ b/drivers/dma-buf/heaps/cma_heap.c @@ -135,10 +135,11 @@ 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); if (!buffer->uncached) { list_for_each_entry(a, &buffer->attachments, list) { if (!a->mapped) @@ -157,10 +158,11 @@ 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); if (!buffer->uncached) { list_for_each_entry(a, &buffer->attachments, list) { if (!a->mapped) |