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 X-Spam-Level: X-Spam-Status: No, score=-13.2 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY, USER_AGENT_SANE_2 autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6A295C43603 for ; Thu, 12 Dec 2019 04:55:11 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 20189206C3 for ; Thu, 12 Dec 2019 04:55:11 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="hcNmWyBU"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b="IPUJTxwI" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 20189206C3 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=mediatek.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Date:To:From:Subject:Message-ID:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=tST88qxjyWj3iXo+1OR+ot5XPtAbnMjcZ45tStcrcjM=; b=hcNmWyBUyovj5s J1hdD9A5PGrzPZ3+1owVeT9av8BF6Wha1qy3yrxVWSOxSNYT20W4Y02J7w0nGubQoD8Ry3XUDgQsS vWao2Mao8zv3lWGq3FC/i/yR5wjJmcfeupNQaqZVPe17Aqes0EUFTRCGYuCdyoc+Sx0vqgXswqLDX 4y8mjFiv8NZs1/TuDfjXmW5V4jAl/ZBM+vJAmImJozuLPKAxsLYE+EcGotFCV9F7LNN+N7COr8zMy ACMJSU7Fg8T4bMMbap/xfv5PR7eSu1s2R3gaOZuC/uTq+ynpmzX3VbomPyKjkv4mFarmtKeOLIpBV qA/F0LJSF/iD8zpun3Kg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1ifGVK-0006DC-4H; Thu, 12 Dec 2019 04:55:10 +0000 Received: from mailgw01.mediatek.com ([216.200.240.184]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1ifGVF-0005Wd-AH; Thu, 12 Dec 2019 04:55:07 +0000 X-UUID: 9c9a45e848df4884a0d2ba02da49c21f-20191211 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Transfer-Encoding:MIME-Version:Content-Type:References:In-Reply-To:Date:CC:To:From:Subject:Message-ID; bh=E+WerAWO7LXcxAkqLk99bj1sr3WlUYbo9Q9kI8fEORY=; b=IPUJTxwI2NNddllHMyhFySNdSF1bZRmbJz/aH5sxtX9jyyRd44Mj3teUXlS+8/PFMrAQBZBGCiDn6VwPsrrwrfeBOJvTgGP0CNsZitfo3H/5tv+JaMuBb92Nzj0Y7EdMg/JCv0NUb6qs6MK/ev3OiB2qRjTbpHQT/VP7lxDZObU=; X-UUID: 9c9a45e848df4884a0d2ba02da49c21f-20191211 Received: from mtkcas66.mediatek.inc [(172.29.193.44)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLS) with ESMTP id 1076878899; Wed, 11 Dec 2019 20:55:03 -0800 Received: from MTKMBS01N1.mediatek.inc (172.21.101.68) by MTKMBS62N1.mediatek.inc (172.29.193.41) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Wed, 11 Dec 2019 20:50:19 -0800 Received: from mtkcas07.mediatek.inc (172.21.101.84) by mtkmbs01n1.mediatek.inc (172.21.101.68) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Thu, 12 Dec 2019 12:48:44 +0800 Received: from [172.21.77.4] (172.21.77.4) by mtkcas07.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Thu, 12 Dec 2019 12:48:54 +0800 Message-ID: <1576126139.29693.2.camel@mtksdaap41> Subject: Re: [PATCH] drm/mediatek: Check return value of mtk_drm_ddp_comp_for_plane. From: CK Hu To: Pi-Hsun Shih Date: Thu, 12 Dec 2019 12:48:59 +0800 In-Reply-To: <1574409521.12825.0.camel@mtksdaap41> References: <20191118061806.52781-1-pihsun@chromium.org> <1574409521.12825.0.camel@mtksdaap41> X-Mailer: Evolution 3.10.4-0ubuntu2 MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191211_205505_372415_CF0F8D3C X-CRM114-Status: GOOD ( 14.29 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Philipp Zabel , David Airlie , open list , "open list:DRM DRIVERS FOR MEDIATEK" , Sean Paul , Daniel Vetter , Matthias Brugger , "moderated list:ARM/Mediatek SoC support" , "moderated list:ARM/Mediatek SoC support" Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi, Pi-Hsun: On Fri, 2019-11-22 at 15:58 +0800, CK Hu wrote: > Hi, Pi-Hsun: > > On Mon, 2019-11-18 at 14:18 +0800, Pi-Hsun Shih wrote: > > The mtk_drm_ddp_comp_for_plane can return NULL, but the usage doesn't > > check for it. Add check for it. > > Reviewed-by: CK Hu > Applied to mediatek-drm-fixes-5.5 [1], thanks. [1] https://github.com/ckhu-mediatek/linux.git-tags/commits/mediatek-drm-fixes-5.5 Regards, CK > > > > Fixes: d6b53f68356f ("drm/mediatek: Add helper to get component for a plane") > > Signed-off-by: Pi-Hsun Shih > > --- > > drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 13 +++++++++---- > > 1 file changed, 9 insertions(+), 4 deletions(-) > > > > diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c > > index f80a8ba75977..4c4f976c994e 100644 > > --- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c > > +++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c > > @@ -310,7 +310,9 @@ static int mtk_crtc_ddp_hw_init(struct mtk_drm_crtc *mtk_crtc) > > > > plane_state = to_mtk_plane_state(plane->state); > > comp = mtk_drm_ddp_comp_for_plane(crtc, plane, &local_layer); > > - mtk_ddp_comp_layer_config(comp, local_layer, plane_state); > > + if (comp) > > + mtk_ddp_comp_layer_config(comp, local_layer, > > + plane_state); > > } > > > > return 0; > > @@ -386,8 +388,9 @@ static void mtk_crtc_ddp_config(struct drm_crtc *crtc) > > comp = mtk_drm_ddp_comp_for_plane(crtc, plane, > > &local_layer); > > > > - mtk_ddp_comp_layer_config(comp, local_layer, > > - plane_state); > > + if (comp) > > + mtk_ddp_comp_layer_config(comp, local_layer, > > + plane_state); > > plane_state->pending.config = false; > > } > > mtk_crtc->pending_planes = false; > > @@ -401,7 +404,9 @@ int mtk_drm_crtc_plane_check(struct drm_crtc *crtc, struct drm_plane *plane, > > struct mtk_ddp_comp *comp; > > > > comp = mtk_drm_ddp_comp_for_plane(crtc, plane, &local_layer); > > - return mtk_ddp_comp_layer_check(comp, local_layer, state); > > + if (comp) > > + return mtk_ddp_comp_layer_check(comp, local_layer, state); > > + return 0; > > } > > > > static void mtk_drm_crtc_atomic_enable(struct drm_crtc *crtc, > > > > base-commit: 5a6fcbeabe3e20459ed8504690b2515dacc5246f > _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel