[PATCH v12 03/10] drm/ttm/tests: Set DMA mask in KUnit device

[Karolina Stolarek]

In commit d393acce7b3f ("drm/tests: Switch to kunit devices"),
DRM test helpers migrated away from using a dummy platform driver
in favour of KUnit device. This means that DMA masks for the device
are not set but are required by ttm_pool_alloc tests.

Set the DMA mask for coherent mappings to unblock testing.

Signed-off-by: Karolina Stolarek <karolina.stolarek at intel.com>
Reviewed-by: Nirmoy Das <nirmoy.das at intel.com>
---
 drivers/gpu/drm/ttm/tests/ttm_kunit_helpers.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/ttm/tests/ttm_kunit_helpers.c b/drivers/gpu/drm/ttm/tests/ttm_kunit_helpers.c
index 5be317a0af56..c9ee7fe7c36d 100644
--- a/drivers/gpu/drm/ttm/tests/ttm_kunit_helpers.c
+++ b/drivers/gpu/drm/ttm/tests/ttm_kunit_helpers.c
@@ -103,6 +103,9 @@ struct ttm_test_devices *ttm_test_devices_basic(struct kunit *test)
 	devs->dev = drm_kunit_helper_alloc_device(test);
 	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, devs->dev);
 
+	/* Set mask for alloc_coherent mappings to enable ttm_pool_alloc testing */
+	devs->dev->coherent_dma_mask = -1;
+
 	devs->drm = __drm_kunit_helper_alloc_drm_device(test, devs->dev,
 							sizeof(*devs->drm), 0,
 							DRIVER_GEM);
-- 
2.34.1