[PATCH 2/3] drm/prime: set the dma_coherent flag for export

["Christian König" <ckoenig.leichtzumerken@gmail.com>]

When a device driver is snooping the CPU cache during access we assume
that all importers need to be able to snoop the CPU cache as well.

Signed-off-by: Christian König <christian.koenig@amd.com>
---
 drivers/gpu/drm/drm_prime.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c
index 20e109a802ae..d5c70b6fe8a4 100644
--- a/drivers/gpu/drm/drm_prime.c
+++ b/drivers/gpu/drm/drm_prime.c
@@ -28,6 +28,7 @@
 
 #include <linux/export.h>
 #include <linux/dma-buf.h>
+#include <linux/dma-map-ops.h>
 #include <linux/rbtree.h>
 #include <linux/module.h>
 
@@ -889,6 +890,7 @@ struct dma_buf *drm_gem_prime_export(struct drm_gem_object *obj,
 		.size = obj->size,
 		.flags = flags,
 		.priv = obj,
+		.coherent = dev_is_dma_coherent(dev->dev),
 		.resv = obj->resv,
 	};
 
-- 
2.25.1