[PATCH 1/2] drm/radeon: check that we have a clock before PLL setup

From: Christian König christian.koenig@amd.com

Partially fixes: https://bugzilla.kernel.org/show_bug.cgi?id=75211

Signed-off-by: Christian König christian.koenig@amd.com --- drivers/gpu/drm/radeon/atombios_crtc.c | 3 +++ 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c index 6da10d2..c31c12b 100644 --- a/drivers/gpu/drm/radeon/atombios_crtc.c +++ b/drivers/gpu/drm/radeon/atombios_crtc.c @@ -1902,6 +1902,9 @@ int atombios_crtc_mode_set(struct drm_crtc *crtc, (ATOM_DEVICE_TV_SUPPORT | ATOM_DEVICE_CV_SUPPORT)) is_tvcv = true;

+ if (!radeon_crtc->adjusted_clock) + return -EINVAL; + atombios_crtc_set_pll(crtc, adjusted_mode);

if (ASIC_IS_DCE4(rdev))