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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 23C3EC33CAF for ; Thu, 16 Jan 2020 19:17:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E84E82077C for ; Thu, 16 Jan 2020 19:17:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1579202224; bh=ivXiS/0NletdSdpGqEZ6JWiA8+PWPDz+IRO1QapDrGc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=VMFGW1YdTCQMO8Iltcx3obevO8/+jsiNz3wKtwPaE117ZAn7TVpaZoqsqfHBl7MoU plQjCfxOKGbjx3JFEHDdICmrfc2NgqNUimlHvg8t0hbeahxQtnLFco5uBmXpz1S2Na 8B6z1ZnX9U0awwTss524f14rHiQP9nIpdWjcIEeQ= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727029AbgAPQzg (ORCPT ); Thu, 16 Jan 2020 11:55:36 -0500 Received: from mail.kernel.org ([198.145.29.99]:41000 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1733066AbgAPQzf (ORCPT ); Thu, 16 Jan 2020 11:55:35 -0500 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 71BF22176D; Thu, 16 Jan 2020 16:55:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1579193735; bh=ivXiS/0NletdSdpGqEZ6JWiA8+PWPDz+IRO1QapDrGc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=1v6UBU29SX/oyp1Fn+SX21KPD4UG5aDrMwXExm8SUOAPMe8TVlHP/Am7W8CPw3fcm 5r+7IxKRPeniSC7aNzNhiovOZAWlwtPV4ZabfkZcYXsS5eJwSF2Jp71Gvs1c3PUe03 1Z31PiCrjCLCrv/nU1xlN+I961KHAWeT8oZ30zrE= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Colin Ian King , Rob Clark , Sasha Levin , linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org Subject: [PATCH AUTOSEL 4.19 027/671] drm/msm: fix unsigned comparison with less than zero Date: Thu, 16 Jan 2020 11:44:18 -0500 Message-Id: <20200116165502.8838-27-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200116165502.8838-1-sashal@kernel.org> References: <20200116165502.8838-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org From: Colin Ian King [ Upstream commit dfdb3be43ef1195c491e6c3760b922acb52e3575 ] The return from the call to _mixer_stages can be a negative error code however this is being assigned to an unsigned variable 'stages' hence the check is always false. Fix this by making 'stages' an int. Detected by Coccinelle ("Unsigned expression compared with zero: stages < 0") Fixes: 25fdd5933e4c ("drm/msm: Add SDM845 DPU support") Signed-off-by: Colin Ian King Signed-off-by: Rob Clark Signed-off-by: Sasha Levin --- drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c index 06be7cf7ce50..79bafea66354 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c @@ -310,7 +310,7 @@ static void dpu_hw_ctl_setup_blendstage(struct dpu_hw_ctl *ctx, u32 mixercfg = 0, mixercfg_ext = 0, mix, ext; u32 mixercfg_ext2 = 0, mixercfg_ext3 = 0; int i, j; - u8 stages; + int stages; int pipes_per_stage; stages = _mixer_stages(ctx->mixer_hw_caps, ctx->mixer_count, lm); -- 2.20.1 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=-9.8 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=ham 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 876A0C33CAF for ; Thu, 16 Jan 2020 16:55:36 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 5849522522 for ; Thu, 16 Jan 2020 16:55:36 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="1v6UBU29" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5849522522 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id DCA7A6EDF6; Thu, 16 Jan 2020 16:55:35 +0000 (UTC) Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by gabe.freedesktop.org (Postfix) with ESMTPS id 635846EDF6; Thu, 16 Jan 2020 16:55:35 +0000 (UTC) Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 71BF22176D; Thu, 16 Jan 2020 16:55:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1579193735; bh=ivXiS/0NletdSdpGqEZ6JWiA8+PWPDz+IRO1QapDrGc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=1v6UBU29SX/oyp1Fn+SX21KPD4UG5aDrMwXExm8SUOAPMe8TVlHP/Am7W8CPw3fcm 5r+7IxKRPeniSC7aNzNhiovOZAWlwtPV4ZabfkZcYXsS5eJwSF2Jp71Gvs1c3PUe03 1Z31PiCrjCLCrv/nU1xlN+I961KHAWeT8oZ30zrE= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: [PATCH AUTOSEL 4.19 027/671] drm/msm: fix unsigned comparison with less than zero Date: Thu, 16 Jan 2020 11:44:18 -0500 Message-Id: <20200116165502.8838-27-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200116165502.8838-1-sashal@kernel.org> References: <20200116165502.8838-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore 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: Sasha Levin , linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, Colin Ian King , freedreno@lists.freedesktop.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" From: Colin Ian King [ Upstream commit dfdb3be43ef1195c491e6c3760b922acb52e3575 ] The return from the call to _mixer_stages can be a negative error code however this is being assigned to an unsigned variable 'stages' hence the check is always false. Fix this by making 'stages' an int. Detected by Coccinelle ("Unsigned expression compared with zero: stages < 0") Fixes: 25fdd5933e4c ("drm/msm: Add SDM845 DPU support") Signed-off-by: Colin Ian King Signed-off-by: Rob Clark Signed-off-by: Sasha Levin --- drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c index 06be7cf7ce50..79bafea66354 100644 --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_ctl.c @@ -310,7 +310,7 @@ static void dpu_hw_ctl_setup_blendstage(struct dpu_hw_ctl *ctx, u32 mixercfg = 0, mixercfg_ext = 0, mix, ext; u32 mixercfg_ext2 = 0, mixercfg_ext3 = 0; int i, j; - u8 stages; + int stages; int pipes_per_stage; stages = _mixer_stages(ctx->mixer_hw_caps, ctx->mixer_count, lm); -- 2.20.1 _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel