Commit b6fa0cd6 authored by Rob Clark's avatar Rob Clark Committed by Sumit Semwal

dma-buf: might_sleep() in dma_buf_unmap_attachment()

We never really clarified if unmap could be done in atomic context.
But since mapping might require sleeping, this implies mutex in use
to synchronize mapping/unmapping, so unmap could sleep as well.  Add
a might_sleep() to clarify this.
Signed-off-by: default avatarRob Clark <rob@ti.com>
Acked-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: default avatarMaarten Lankhorst <maarten.lankhorst@canonical.com>
Signed-off-by: default avatarSumit Semwal <sumit.semwal@linaro.org>
parent f01af9f8
...@@ -298,6 +298,8 @@ void dma_buf_unmap_attachment(struct dma_buf_attachment *attach, ...@@ -298,6 +298,8 @@ void dma_buf_unmap_attachment(struct dma_buf_attachment *attach,
struct sg_table *sg_table, struct sg_table *sg_table,
enum dma_data_direction direction) enum dma_data_direction direction)
{ {
might_sleep();
if (WARN_ON(!attach || !attach->dmabuf || !sg_table)) if (WARN_ON(!attach || !attach->dmabuf || !sg_table))
return; return;
......
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