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 81663C433F5 for ; Fri, 1 Apr 2022 14:35:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244391AbiDAOgt (ORCPT ); Fri, 1 Apr 2022 10:36:49 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37628 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1347513AbiDAOdC (ORCPT ); Fri, 1 Apr 2022 10:33:02 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id ABDA31EFE15; Fri, 1 Apr 2022 07:29:24 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 2246B61C43; Fri, 1 Apr 2022 14:29:24 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id AB6EBC340EE; Fri, 1 Apr 2022 14:29:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1648823363; bh=aoUe/M1CYOzKJMsQYqxk8lxuYJkmbYkYDaHKmDTSJss=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=AOdulAj2OIRKWAFzRIU+C91lhEeK4lEDf+uxyQWDuDCR9EoZ3FIihVVjz/Li37770 fUlfJWYtK+pH2VSskZMXENepMaJfVO+hI5qOwOF0nY0tvbLXwr/VHtQeS6sbe3GDLF WV11hZpvb3ISRZaGkXYQC37ECZkl5D/jfHZZUGMywXA635GnJpN1OXT5sxB88wYRDU dLdEgvImgvJTWxUNyeS49Upqmaq7x9CL/FxltLFiArI972zAZ6KZc6xssZLKJ2PkpT ypStFIPhcYKyiIN+9tdet8R4R0o9oanA+55yLRaNc4o+E8YnIqiyBHQIufTMp5Ftot C/TKJqmp20Iaw== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Kevin Tang , Dan Carpenter , Javier Martinez Canillas , Thomas Zimmermann , Sasha Levin , airlied@linux.ie, daniel@ffwll.ch, orsonzhai@gmail.com, baolin.wang7@gmail.com, zhang.lyra@gmail.com, maarten.lankhorst@linux.intel.com, yong.wu@mediatek.com, etom@igel.co.jp, dri-devel@lists.freedesktop.org Subject: [PATCH AUTOSEL 5.17 071/149] drm/sprd: fix potential NULL dereference Date: Fri, 1 Apr 2022 10:24:18 -0400 Message-Id: <20220401142536.1948161-71-sashal@kernel.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220401142536.1948161-1-sashal@kernel.org> References: <20220401142536.1948161-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Kevin Tang [ Upstream commit 8668658aebb0a19d877d5a81c004baf716c4aaa6 ] 'drm' could be null in sprd_drm_shutdown, and drm_warn maybe dereference it, remove this warning log. Reported-by: Dan Carpenter Signed-off-by: Kevin Tang Reviewed-by: Javier Martinez Canillas Acked-by: Thomas Zimmermann Link: https://lore.kernel.org/all/20220117084044.9210-1-kevin3.tang@gmail.com v1 -> v2: - Split checking platform_get_resource() return value to a separate patch - Use dev_warn() instead of removing the warning log Signed-off-by: Sasha Levin --- drivers/gpu/drm/sprd/sprd_drm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/sprd/sprd_drm.c b/drivers/gpu/drm/sprd/sprd_drm.c index a077e2d4d721..af2be97d5ed0 100644 --- a/drivers/gpu/drm/sprd/sprd_drm.c +++ b/drivers/gpu/drm/sprd/sprd_drm.c @@ -155,7 +155,7 @@ static void sprd_drm_shutdown(struct platform_device *pdev) struct drm_device *drm = platform_get_drvdata(pdev); if (!drm) { - drm_warn(drm, "drm device is not available, no shutdown\n"); + dev_warn(&pdev->dev, "drm device is not available, no shutdown\n"); return; } -- 2.34.1