[PATCH] drm: Include <linux/mem_encrypt.h> in drm_cache.c

[Thomas Zimmermann]

The function drm_need_swiotbl() needs mem_encrypt_active() from
<linux/mem_encrypt.h>. The include got lost when refactoring the
code recently.

Signed-off-by: Thomas Zimmermann <tzimmermann at suse.de>
Fixes: 3abc66706385 ("drm: Implement drm_need_swiotlb() in drm_cache.c")
Reported-by: kernel test robot <lkp at intel.com>
Cc: Thomas Zimmermann <tzimmermann at suse.de>
Cc: Christian König <christian.koenig at amd.com>
Cc: Daniel Vetter <daniel.vetter at ffwll.ch>
Cc: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
Cc: Maxime Ripard <mripard at kernel.org>
Cc: David Airlie <airlied at linux.ie>
Cc: Daniel Vetter <daniel at ffwll.ch>
Cc: dri-devel at lists.freedesktop.org
---
 drivers/gpu/drm/drm_cache.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/drm_cache.c b/drivers/gpu/drm/drm_cache.c
index 49551a7fa22f..79a50ef1250f 100644
--- a/drivers/gpu/drm/drm_cache.c
+++ b/drivers/gpu/drm/drm_cache.c
@@ -30,6 +30,7 @@
 
 #include <linux/export.h>
 #include <linux/highmem.h>
+#include <linux/mem_encrypt.h>
 #include <xen/xen.h>
 
 #include <drm/drm_cache.h>
-- 
2.29.2