On 4/17/2024 3:03 PM, Karolina Stolarek wrote:
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@xxxxxxxxx>
---
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 7b7c1fa805fc..cb1cd676f8ae 100644
--- a/drivers/gpu/drm/ttm/tests/ttm_kunit_helpers.c
+++ b/drivers/gpu/drm/ttm/tests/ttm_kunit_helpers.c
@@ -98,6 +98,9 @@ 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;
DMA_BIT_MASK() would be nice here. I wonder if it make sense to move
that to kunit device related calls, anyway this is:
Reviewed-by: Nirmoy Das <nirmoy.das@xxxxxxxxx>
+
devs->drm = __drm_kunit_helper_alloc_drm_device(test, devs->dev,
sizeof(*devs->drm), 0,
DRIVER_GEM);
