[PATCH] drm/amdgpu/display: check if ppfuncs exists before using it

[Alex Deucher]

Fixes a crash on asics without powerplay yet (e.g., vega20).

Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_services.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_services.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_services.c
index d5e6b45fd6e6..5a3346124a01 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_services.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_services.c
@@ -343,7 +343,7 @@ bool dm_pp_get_clock_levels_by_type_with_latency(
 	struct pp_clock_levels_with_latency pp_clks = { 0 };
 	const struct amd_pm_funcs *pp_funcs = adev->powerplay.pp_funcs;
 
-	if (!pp_funcs->get_clock_by_type_with_latency)
+	if (!pp_funcs || !pp_funcs->get_clock_by_type_with_latency)
 		return false;
 
 	if (pp_funcs->get_clock_by_type_with_latency(pp_handle,
-- 
2.13.6