[PATCH] drm/amd/display: Fix unsigned variable compared to less than zero

[Gustavo A. R. Silva]

Currenly, the error check below on variable *vcpi_slots* is always
false because it is a uint64_t type variable, hence, the values
this variable can hold are never less than zero:

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c:
4870         if (dm_new_connector_state->vcpi_slots < 0) {
4871                 DRM_DEBUG_ATOMIC("failed finding vcpi slots: %d\n", (int)dm_new_connector_stat     e->vcpi_slots);
4872                 return dm_new_connector_state->vcpi_slots;
4873         }

Fix this by making *vcpi_slots* of int type.

Addresses-Coverity: 1487838 ("Unsigned compared against 0")
Fixes: b4c578f08378 ("drm/amd/display: Add MST atomic routines")
Signed-off-by: Gustavo A. R. Silva <gustavo at embeddedor.com>
---
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
index 6db07e9e33ab..a8fc90a927d6 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
@@ -403,7 +403,7 @@ struct dm_connector_state {
 	bool underscan_enable;
 	bool freesync_capable;
 	uint8_t abm_level;
-	uint64_t vcpi_slots;
+	int vcpi_slots;
 	uint64_t pbn;
 };
 
-- 
2.23.0