From patchwork Mon Nov 18 03:36:46 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Jason-JH.Lin" X-Patchwork-Id: 13878058 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 40EB5D10F31 for ; Mon, 18 Nov 2024 03:37:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type: MIME-Version:Message-ID:Date:Subject:To:From:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To: References:List-Owner; bh=cY3M3paXFjVnDGLWR8LPQPj0vfaZVh7x56FlJ8YtW2M=; b=lVa WKosVktnZbzSIZSGLIKTxjk69sxiekghSlONdMZxdKVtfXSOSEiilHlu8XcyWezsTI6x8KR6a9XAI MKGL7aKYZ1iPgcX2SXxQZ1f1I11xatFcUivhCABv5QM3g958PfahTkl8cS1Oh/sDtzyTHrQYJms4Z Oy1gtR2fPAuRJwQdPufDcNdmhG2I/LGmltx5aRVygP+XqeuGI5OBCvgvK5TnLc7ssXL+Tt3MzZbCe QfQK3hV+LHW74m9DmnR43+4ospmyCko4ofPVDD86tYKqeKWOm/F6wAXHkDGQMWoofCX0Q8EVffQpj EQDZBGVJRqpyLfKY/IEUeZj3k8NG16Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tCsaI-00000008FQo-006C; Mon, 18 Nov 2024 03:37:54 +0000 Received: from mailgw02.mediatek.com ([216.200.240.185]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tCsZL-00000008FKj-2S5H; Mon, 18 Nov 2024 03:36:56 +0000 X-UUID: 59ad80e2a55e11ef9048ed6ed365623b-20241117 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:MIME-Version:Message-ID:Date:Subject:CC:To:From; bh=cY3M3paXFjVnDGLWR8LPQPj0vfaZVh7x56FlJ8YtW2M=; b=T2cO3pTv2a0Qc1O8poWjwhgLhb2ULeXeLuUDMNeAPyrjtafIBDHAHpJKGBrL+nn1MvCQ7+PimcKI3UJswvVgHPGade8MiVhEdE3Zpab36IqI9grdn+WwAUOiv2gCa8p4GfScrYzo/AACcft26uY8Eb/H33ssvzgQ0pYR6/i3WWY=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.43,REQID:0f65faa0-5992-4580-9396-3ff7d1774345,IP:0,U RL:0,TC:0,Content:0,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTION: release,TS:0 X-CID-META: VersionHash:ce19b8a,CLOUDID:131ecb5c-f18b-4d56-b49c-93279ee09144,B ulkID:nil,BulkQuantity:0,Recheck:0,SF:102,TC:nil,Content:0,EDM:-3,IP:nil,U RL:0,File:nil,RT:nil,Bulk:nil,QS:nil,BEC:nil,COL:0,OSI:0,OSA:0,AV:0,LES:1, SPR:NO,DKR:0,DKP:0,BRR:0,BRE:0,ARC:0 X-CID-BVR: 0 X-CID-BAS: 0,_,0,_ X-CID-FACTOR: TF_CID_SPAM_SNR X-UUID: 59ad80e2a55e11ef9048ed6ed365623b-20241117 Received: from mtkmbs13n1.mediatek.inc [(172.21.101.193)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 1735332722; Sun, 17 Nov 2024 20:36:52 -0700 Received: from mtkmbs13n1.mediatek.inc (172.21.101.193) by mtkmbs10n1.mediatek.inc (172.21.101.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.26; Mon, 18 Nov 2024 11:36:48 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs13n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1118.26 via Frontend Transport; Mon, 18 Nov 2024 11:36:48 +0800 From: Jason-JH.Lin To: Chun-Kuang Hu Subject: [PATCH] drm/mediatek: Add no pending_planes flag checking for mtk_crtc_finish_page_flip() Date: Mon, 18 Nov 2024 11:36:46 +0800 Message-ID: <20241118033646.31633-1-jason-jh.lin@mediatek.com> X-Mailer: git-send-email 2.18.0 MIME-Version: 1.0 X-TM-AS-Product-Ver: SMEX-14.0.0.3152-9.1.1006-23728.005 X-TM-AS-Result: No-10--5.865100-8.000000 X-TMASE-MatchedRID: 7f0W3vGS/J7ww+sel1EBgVPjo7D4SFg4uoYFb0nRiqP82ks92f+GmsB6 rnzzylDrRB4o3Hb/MDAMSPrY6IbTu7gFJkVTA0wMliwpJdZauwcrHkgIan9a0QLlYq1KzQi/vFf PytWHA2khXi7xgp14qwG2ORx9Eyap3CtEsOTZxuKO0rt0LpQGeX0tCKdnhB589yM15V5aWpj6C0 ePs7A07YFInLyeDAoZT/btC4l4MdyAqm8NWtwXUqO4Pry+YzMezUn+SItISnpfe/9937fRFg== X-TM-AS-User-Approved-Sender: No X-TM-AS-User-Blocked-Sender: No X-TMASE-Result: 10--5.865100-8.000000 X-TMASE-Version: SMEX-14.0.0.3152-9.1.1006-23728.005 X-TM-SNTS-SMTP: 8A16D88748D68549294F33BBDA61DB44C457C9A4610B3EA90DFB2FE95C43F3332000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241117_193655_675800_81F0AE48 X-CRM114-Status: GOOD ( 11.71 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "Jason-JH . Lin" , Singo Chang , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, Project_Global_Chrome_Upstream_Group@mediatek.com, Nancy Lin , linux-mediatek@lists.infradead.org, Shawn Sung , linux-arm-kernel@lists.infradead.org, AngeloGioacchino Del Regno Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org mtk_crtc_finish_page_flip() is used to notify the page flip that has been completed to the userspace, so userspace can free the frame buffer of the last frame and commit the next frame. However, mtk_crtc_finish_page_flip() cannot guarantee the GCE has configured all the display hardware settings of the last frame. This may cause the display hardware to still access the last frame buffer released by the userspace. So add the checking condition of no pending_plens flags to make sure GCE has executed all the pending planes configuration. Fixes: 7f82d9c43879 ("drm/mediatek: Clear pending flag when cmdq packet is done") Signed-off-by: Jason-JH.Lin --- drivers/gpu/drm/mediatek/mtk_crtc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/mediatek/mtk_crtc.c b/drivers/gpu/drm/mediatek/mtk_crtc.c index eb0e1233ad04..b03b9102ff90 100644 --- a/drivers/gpu/drm/mediatek/mtk_crtc.c +++ b/drivers/gpu/drm/mediatek/mtk_crtc.c @@ -113,7 +113,8 @@ static void mtk_drm_finish_page_flip(struct mtk_crtc *mtk_crtc) drm_crtc_handle_vblank(&mtk_crtc->base); spin_lock_irqsave(&mtk_crtc->config_lock, flags); - if (!mtk_crtc->config_updating && mtk_crtc->pending_needs_vblank) { + if (!mtk_crtc->config_updating && mtk_crtc->pending_needs_vblank && + !mtk_crtc->pending_planes) { mtk_crtc_finish_page_flip(mtk_crtc); mtk_crtc->pending_needs_vblank = false; }