From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5652AC4332F for ; Mon, 14 Mar 2022 07:42:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236791AbiCNHoD (ORCPT ); Mon, 14 Mar 2022 03:44:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40582 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236781AbiCNHoA (ORCPT ); Mon, 14 Mar 2022 03:44:00 -0400 Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E61A2B83; Mon, 14 Mar 2022 00:42:50 -0700 (PDT) X-UUID: 7114af7b594445dfb9a1823aeda609bf-20220314 X-UUID: 7114af7b594445dfb9a1823aeda609bf-20220314 Received: from mtkexhb01.mediatek.inc [(172.21.101.102)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 2118627658; Mon, 14 Mar 2022 15:42:44 +0800 Received: from mtkcas11.mediatek.inc (172.21.101.40) by mtkmbs10n2.mediatek.inc (172.21.101.183) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.2.792.3; Mon, 14 Mar 2022 15:42:43 +0800 Received: from localhost.localdomain (10.17.3.154) by mtkcas11.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Mon, 14 Mar 2022 15:42:42 +0800 From: Yongqiang Niu To: Chun-Kuang Hu CC: Rob Herring , Matthias Brugger , Philipp Zabel , "David Airlie" , Daniel Vetter , Jassi Brar , Yongqiang Niu , Fabien Parent , Dennis YC Hsieh , , , , , , , Hsin-Yi Wang Subject: [PATCH v1, 1/1] drm/mediatek: fixup crtc event null pointer issue Date: Mon, 14 Mar 2022 15:42:39 +0800 Message-ID: <20220314074239.28507-2-yongqiang.niu@mediatek.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220314074239.28507-1-yongqiang.niu@mediatek.com> References: <20220314074239.28507-1-yongqiang.niu@mediatek.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7BIT Content-Type: text/plain; charset=US-ASCII X-MTK: N Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org if crtc event is null pointer, do not send vblank event Signed-off-by: Yongqiang Niu --- drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c index d661edf7e0fe..265fed446628 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c @@ -92,6 +92,9 @@ static void mtk_drm_crtc_finish_page_flip(struct mtk_drm_crtc *mtk_crtc) struct drm_crtc *crtc = &mtk_crtc->base; unsigned long flags; + if (!mtk_crtc->event) + return; + spin_lock_irqsave(&crtc->dev->event_lock, flags); drm_crtc_send_vblank_event(crtc, mtk_crtc->event); drm_crtc_vblank_put(crtc); -- 2.25.1