drm/amdgpu/display bail early in dm_pp_get_static_clocks

[ Upstream commit 376814f5fcf1aadda501d1413d56e8af85d19a97 ]

If there are no supported callbacks.  We'll fall back to the
nominal clocks.

Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1170
Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_pp_smu.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_pp_smu.c
index 785322cd4c6c91cb0a55cb47cea7d31815f7de8c..7241d4c2077894c3b1f1779c10754510ade5cf5e 100644 (file)
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_pp_smu.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_pp_smu.c
@@ -530,6 +530,8 @@ bool dm_pp_get_static_clocks(
                        &pp_clk_info);
        else if (adev->smu.funcs)
                ret = smu_get_current_clocks(&adev->smu, &pp_clk_info);
+       else
+               return false;
        if (ret)
                return false;