From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C6B0C1774C for ; Wed, 9 Aug 2023 11:11:37 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 475FBC433C8; Wed, 9 Aug 2023 11:11:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1691579497; bh=Omgf3TMvIvcCXys6p4t3IpxwrIM4ZEU5yexsvosOhio=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=xLPYkO55SOGXOwY6N0CBhXper5DLAZhInLjyogrq9ScfcawjVSNxe5W/D/q1CcAfC o8453ReUzs+/zz3KzZyTyZ2mdX2Cj1qdfipHDNj+YuL3Un0O5W6Pz4Qn4vIwBLdnav XiUZafQH1l7BeoQRX7Hkm4K8bCBwHEVUyqvhSkN4= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Lyude Paul , Ilia Mirkin Subject: [PATCH 4.19 005/323] drm/edid: Fix uninitialized variable in drm_cvt_modes() Date: Wed, 9 Aug 2023 12:37:23 +0200 Message-ID: <20230809103658.358120071@linuxfoundation.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230809103658.104386911@linuxfoundation.org> References: <20230809103658.104386911@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Lyude Paul commit 991fcb77f490390bcad89fa67d95763c58cdc04c upstream. Noticed this when trying to compile with -Wall on a kernel fork. We potentially don't set width here, which causes the compiler to complain about width potentially being uninitialized in drm_cvt_modes(). So, let's fix that. Changes since v1: * Don't emit an error as this code isn't reachable, just mark it as such Changes since v2: * Remove now unused variable Fixes: 3f649ab728cd ("treewide: Remove uninitialized_var() usage") Signed-off-by: Lyude Paul Reviewed-by: Ilia Mirkin Link: https://patchwork.freedesktop.org/patch/msgid/20201105235703.1328115-1-lyude@redhat.com Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/drm_edid.c | 2 ++ 1 file changed, 2 insertions(+) --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -2798,6 +2798,8 @@ static int drm_cvt_modes(struct drm_conn case 0x0c: width = height * 15 / 9; break; + default: + unreachable(); } for (j = 1; j < 5; j++) {