drm/amdgpu/pm: check for headless before calling compute_clocks

BugLink: http://bugs.launchpad.net/bugs/1673118
commit c10c8f7c27103bd7ac02d041d9d6e97296d48fc1 upstream.

Don't update display bandwidth on headless asics.

bug:
https://bugs.freedesktop.org/show_bug.cgi?id=99387

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
index 723ae682bf2597b90201fc92e94485eaf77c0f16..5a50b3df80ee521ef9aacd3fe9e47e01d8cabb74 100644 (file)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
@@ -1252,7 +1252,8 @@ void amdgpu_pm_compute_clocks(struct amdgpu_device *adev)
        if (!adev->pm.dpm_enabled)
                return;
 
-       amdgpu_display_bandwidth_update(adev);
+       if (adev->mode_info.num_crtc)
+               amdgpu_display_bandwidth_update(adev);
 
        for (i = 0; i < AMDGPU_MAX_RINGS; i++) {
                struct amdgpu_ring *ring = adev->rings[i];