drm/ttm/tests: Set DMA mask in KUnit device

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@intel.com>
Reviewed-by: Nirmoy Das <nirmoy.das@intel.com>
Signed-off-by: Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/dbd83b01bc835d922c070ad1c5bd9023e631e6c4.1718192625.git.karolina.stolarek@intel.com

diff --git a/drivers/gpu/drm/ttm/tests/ttm_kunit_helpers.c b/drivers/gpu/drm/ttm/tests/ttm_kunit_helpers.c
index 5be317a0af56b7bbb4edb3c3a3463ff136bc7a6c..c9ee7fe7c36dfaaf6c0c8aa25471b2f95b44c91a 100644 (file)
--- 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);