From patchwork Wed Jan 11 02:44:41 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Miles Chen X-Patchwork-Id: 13095905 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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (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 C0035C54EBC for ; Wed, 11 Jan 2023 02:52:10 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id C583510E6AB; Wed, 11 Jan 2023 02:52:09 +0000 (UTC) Received: from mailgw02.mediatek.com (unknown [210.61.82.184]) by gabe.freedesktop.org (Postfix) with ESMTPS id 85E8110E6AB for ; Wed, 11 Jan 2023 02:52:07 +0000 (UTC) X-UUID: ec4f79ec915a11ed945fc101203acc17-20230111 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=AX+YH0kFrQnZ6S7xeXZmTR/bCpZwNmMzUSoBmbHjAZU=; b=Ia0Uu+4/us99SFnGwoz9ogCRWTtfydfsiD3V2T1x1JyOhTBrR94U5camKTWZKK8XHYtxLrU53i9klCHKi5Ys4ry1/cAOhjC/ts4Z/K50li6vu6QvWjIf/ko9kLlSpalJvaBmerRsn0H5JtA/LCriKt01b17M5gWF+UedzTZGr4w=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.17, REQID:946cee99-e493-4c02-a330-59bbf12cf215, IP:0, U RL:0,TC:0,Content:0,EDM:0,RT:0,SF:95,FILE:0,BULK:0,RULE:Release_Ham,ACTION :release,TS:95 X-CID-INFO: VERSION:1.1.17, REQID:946cee99-e493-4c02-a330-59bbf12cf215, IP:0, URL :0,TC:0,Content:0,EDM:0,RT:0,SF:95,FILE:0,BULK:0,RULE:Spam_GS981B3D,ACTION :quarantine,TS:95 X-CID-META: VersionHash:543e81c, CLOUDID:08a474f5-ff42-4fb0-b929-626456a83c14, B ulkID:2301111052015J7G5SZD,BulkQuantity:0,Recheck:0,SF:38|28|17|19|48,TC:n il,Content:0,EDM:-3,IP:nil,URL:0,File:nil,Bulk:nil,QS:nil,BEC:nil,COL:0,OS I:0,OSA:0 X-CID-APTURL: Status:success,Category:nil,Trust:0,Unknown:0,Malicious:0 X-CID-BVR: 0 X-UUID: ec4f79ec915a11ed945fc101203acc17-20230111 Received: from mtkmbs10n1.mediatek.inc [(172.21.101.34)] by mailgw02.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 208919268; Wed, 11 Jan 2023 10:52:01 +0800 Received: from mtkmbs13n2.mediatek.inc (172.21.101.108) by mtkmbs13n1.mediatek.inc (172.21.101.193) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.792.15; Wed, 11 Jan 2023 10:52:00 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs13n2.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.792.15 via Frontend Transport; Wed, 11 Jan 2023 10:52:00 +0800 From: Miles Chen To: Chun-Kuang Hu , Philipp Zabel , David Airlie , Daniel Vetter , Matthias Brugger , CK Hu Subject: [PATCH v2] drm/mediatek: stop using 0 as NULL pointer Date: Wed, 11 Jan 2023 10:44:41 +0800 Message-ID: <20230111024443.24559-1-miles.chen@mediatek.com> X-Mailer: git-send-email 2.18.0 MIME-Version: 1.0 X-MTK: N X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-arm-kernel@lists.infradead.org, Miles Chen , linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Use NULL for NULL pointer to fix the following sparse warning: drivers/gpu/drm/mediatek/mtk_drm_gem.c:265:27: sparse: warning: Using plain integer as NULL pointer Fixes: 3df64d7b0a4f ("drm/mediatek: Implement gem prime vmap/vunmap function") Signed-off-by: Miles Chen Reviewed-by: AngeloGioacchino Del Regno --- Change since v1: Add Fixes tag --- drivers/gpu/drm/mediatek/mtk_drm_gem.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/mediatek/mtk_drm_gem.c b/drivers/gpu/drm/mediatek/mtk_drm_gem.c index 47e96b0289f9..06aadd5e7f5b 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_gem.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_gem.c @@ -262,6 +262,6 @@ void mtk_drm_gem_prime_vunmap(struct drm_gem_object *obj, return; vunmap(vaddr); - mtk_gem->kvaddr = 0; + mtk_gem->kvaddr = NULL; kfree(mtk_gem->pages); }