From: Laurent Pinchart Date: Mon, 10 Jul 2017 20:46:39 +0000 (+0300) Subject: drm: rcar-du: Use the VBK interrupt for vblank events X-Git-Tag: v4.9.81~3 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=758e22acf4fd9aaf51c7bae93a47401b8f792d56;p=thirdparty%2Fkernel%2Fstable.git drm: rcar-du: Use the VBK interrupt for vblank events commit cbbb90b0c084d7dfb2ed8e3fecf8df200fbdd2a0 upstream. When implementing support for interlaced modes, the driver switched from reporting vblank events on the vertical blanking (VBK) interrupt to the frame end interrupt (FRM). This incorrectly divided the reported refresh rate by two. Fix it by moving back to the VBK interrupt. Fixes: 906eff7fcada ("drm: rcar-du: Implement support for interlaced modes") Signed-off-by: Laurent Pinchart Reviewed-by: Kieran Bingham Signed-off-by: thongsyho Signed-off-by: Nhan Nguyen Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c index a2ec6d8796a09..848f7f2152eed 100644 --- a/drivers/gpu/drm/rcar-du/rcar_du_crtc.c +++ b/drivers/gpu/drm/rcar-du/rcar_du_crtc.c @@ -551,7 +551,7 @@ static irqreturn_t rcar_du_crtc_irq(int irq, void *arg) status = rcar_du_crtc_read(rcrtc, DSSR); rcar_du_crtc_write(rcrtc, DSRCR, status & DSRCR_MASK); - if (status & DSSR_FRM) { + if (status & DSSR_VBK) { drm_crtc_handle_vblank(&rcrtc->crtc); rcar_du_crtc_finish_page_flip(rcrtc); ret = IRQ_HANDLED;