From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> Dotclocks can reach ~1GHz these days, so intel_usecs_to_scanlines(), with its 32bit maths, is currently limited to a few milliseconds. I want bigger numbers in DSB selftests, so switch over to 64bit maths. Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> --- drivers/gpu/drm/i915/display/intel_crtc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_crtc.c b/drivers/gpu/drm/i915/display/intel_crtc.c index ca6dc1dc56c8..17edd6099287 100644 --- a/drivers/gpu/drm/i915/display/intel_crtc.c +++ b/drivers/gpu/drm/i915/display/intel_crtc.c @@ -454,8 +454,8 @@ int intel_usecs_to_scanlines(const struct drm_display_mode *adjusted_mode, if (!adjusted_mode->crtc_htotal) return 1; - return DIV_ROUND_UP(usecs * adjusted_mode->crtc_clock, - 1000 * adjusted_mode->crtc_htotal); + return DIV_ROUND_UP_ULL(mul_u32_u32(usecs, adjusted_mode->crtc_clock), + 1000 * adjusted_mode->crtc_htotal); } /** -- 2.44.1
