From patchwork Mon Feb 20 13:49:11 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shawn Guo X-Patchwork-Id: 9582897 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id EC3A96042F for ; Mon, 20 Feb 2017 13:50:00 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id DE4F12869E for ; Mon, 20 Feb 2017 13:50:00 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id D2CD228878; Mon, 20 Feb 2017 13:50:00 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id B8F502869E for ; Mon, 20 Feb 2017 13:49:59 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 99E3F6E23A; Mon, 20 Feb 2017 13:49:58 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by gabe.freedesktop.org (Postfix) with ESMTPS id 4B0D46E23A for ; Mon, 20 Feb 2017 13:49:58 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 6808D2011B; Mon, 20 Feb 2017 13:49:57 +0000 (UTC) Received: from localhost.localdomain (li411-102.members.linode.com [106.187.91.102]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 05008200E6; Mon, 20 Feb 2017 13:49:53 +0000 (UTC) From: Shawn Guo To: dri-devel@lists.freedesktop.org Subject: [PATCH] drm: zte: fix static checker warning on variable 'fmt' Date: Mon, 20 Feb 2017 21:49:11 +0800 Message-Id: <1487598551-28310-1-git-send-email-shawnguo@kernel.org> X-Mailer: git-send-email 1.9.1 X-Virus-Scanned: ClamAV using ClamSMTP Cc: Daniel Vetter , Dan Carpenter X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP From: Shawn Guo Commit 4e986d3705df ("drm: zte: add overlay plane support") introduces the following static checker warning: drivers/gpu/drm/zte/zx_plane.c:170 zx_vl_rsz_setup() warn: always true condition '(fmt >= 0) => (0-u32max >= 0)' Fix it by change 'fmt' type to integer. Reported-by: Dan Carpenter Fixes: 4e986d3705df ("drm: zte: add overlay plane support") Signed-off-by: Shawn Guo Reviewed-by: Sean Paul --- drivers/gpu/drm/zte/zx_plane.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/zte/zx_plane.c b/drivers/gpu/drm/zte/zx_plane.c index 1d08ba381098..d646ac931663 100644 --- a/drivers/gpu/drm/zte/zx_plane.c +++ b/drivers/gpu/drm/zte/zx_plane.c @@ -159,7 +159,7 @@ static void zx_vl_rsz_setup(struct zx_plane *zplane, uint32_t format, void __iomem *rsz = zplane->rsz; u32 src_chroma_w = src_w; u32 src_chroma_h = src_h; - u32 fmt; + int fmt; /* Set up source and destination resolution */ zx_writel(rsz + RSZ_SRC_CFG, RSZ_VER(src_h - 1) | RSZ_HOR(src_w - 1)); @@ -203,7 +203,7 @@ static void zx_vl_plane_atomic_update(struct drm_plane *plane, u32 src_x, src_y, src_w, src_h; u32 dst_x, dst_y, dst_w, dst_h; uint32_t format; - u32 fmt; + int fmt; int num_planes; int i;