From: Bibby Hsieh Date: Thu, 29 Sep 2016 03:29:49 +0000 (+0800) Subject: drm/mediatek: clear IRQ status before enable OVL interrupt X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=56e4b1e183555c74097fa012f1606b22223f027b;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git drm/mediatek: clear IRQ status before enable OVL interrupt To make sure that the first vblank IRQ after enabling vblank isn't too short or immediate, we have to clear the IRQ status before enable OVL interrupt. Signed-off-by: Bibby Hsieh Acked-by: CK Hu --- diff --git a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c index 019b7ca392d7..f75c5b5a536c 100644 --- a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c +++ b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c @@ -80,6 +80,7 @@ static void mtk_ovl_enable_vblank(struct mtk_ddp_comp *comp, ddp_comp); priv->crtc = crtc; + writel(0x0, comp->regs + DISP_REG_OVL_INTSTA); writel_relaxed(OVL_FME_CPL_INT, comp->regs + DISP_REG_OVL_INTEN); }