Restrict hsync start, end, hdisplay and htotal to be according to hw spec. Through drm_mode_set_crtcinfo(), these will also limit hblank start, end. Signed-off-by: Jani Nikula <jani.nikula at intel.com> --- Let's see if this will be frowned upon... seems better to have these separate from the follow-up workaround patch, which addresses a specific hw constraint. Embarrassingly, I have to acknowledge I didn't test this. I seem to have trouble with creating an initrd that would tackle the disk encryption that I have on this laptop I'm currently restricted to. *sigh*. --- drivers/gpu/drm/i915/intel_display.c | 5 +++++ 1 files changed, 5 insertions(+), 0 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 9730162..ada736d 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -3420,6 +3420,11 @@ static bool intel_crtc_mode_fixup(struct drm_crtc *crtc, if (!(adjusted_mode->private_flags & INTEL_MODE_CRTC_TIMINGS_SET)) drm_mode_set_crtcinfo(adjusted_mode, 0); + if (adjusted_mode->hsync_start < adjusted_mode->hdisplay || + adjusted_mode->hsync_end > adjusted_mode->htotal || + adjusted_mode->hsync_start >= adjusted_mode->hsync_end) + return false; + return true; } -- 1.7.4.1
