[PATCH] drm/test/shmem: set a DMA mask for the mock device

[Marco Pagani]

Set a DMA mask for the mock device to avoid warnings generated in
dma_map_sgtable().

Reported-by: Guenter Roeck <li...@roeck-us.net>
Signed-off-by: Marco Pagani <marpa...@redhat.com>
---
 drivers/gpu/drm/tests/drm_gem_shmem_test.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/tests/drm_gem_shmem_test.c 
b/drivers/gpu/drm/tests/drm_gem_shmem_test.c
index 91202e40cde9..d691b29a4312 100644
--- a/drivers/gpu/drm/tests/drm_gem_shmem_test.c
+++ b/drivers/gpu/drm/tests/drm_gem_shmem_test.c
@@ -341,11 +341,15 @@ static int drm_gem_shmem_test_init(struct kunit *test)
 {
        struct device *dev;
        struct drm_device *drm_dev;
+       int ret;
 
        /* Allocate a parent device */
        dev = drm_kunit_helper_alloc_device(test);
        KUNIT_ASSERT_NOT_ERR_OR_NULL(test, dev);
 
+       ret = dma_coerce_mask_and_coherent(dev, DMA_BIT_MASK(64));
+       KUNIT_EXPECT_EQ(test, ret, 0);
+
        /*
         * The DRM core will automatically initialize the GEM core and create
         * a DRM Memory Manager object which provides an address space pool
-- 
2.43.2