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=-0.7 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no 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 D4E8AC433DF for ; Wed, 27 May 2020 15:44:03 +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 B460820776 for ; Wed, 27 May 2020 15:44:03 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B460820776 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=chris-wilson.co.uk 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 1041989C53; Wed, 27 May 2020 15:44:03 +0000 (UTC) Received: from fireflyinternet.com (mail.fireflyinternet.com [109.228.58.192]) by gabe.freedesktop.org (Postfix) with ESMTPS id 0AE2F89C53; Wed, 27 May 2020 15:44:00 +0000 (UTC) X-Default-Received-SPF: pass (skip=forwardok (res=PASS)) x-ip-name=78.156.65.138; Received: from localhost (unverified [78.156.65.138]) by fireflyinternet.com (Firefly Internet (M1)) with ESMTP (TLS) id 21311296-1500050 for multiple; Wed, 27 May 2020 16:43:53 +0100 MIME-Version: 1.0 In-Reply-To: <20200527140526.1458215-2-arnd@arndb.de> References: <20200527140526.1458215-1-arnd@arndb.de> <20200527140526.1458215-2-arnd@arndb.de> From: Chris Wilson To: Arnd Bergmann , Daniel Vetter , David Airlie , Jani Nikula , John Harrison , Joonas Lahtinen , Rodrigo Vivi , Tvrtko Ursulin Subject: Re: [PATCH 2/3] drm/i915: work around false-positive maybe-uninitialized warning Message-ID: <159059423232.30979.11698525690770673738@build.alporthouse.com> User-Agent: alot/0.8.1 Date: Wed, 27 May 2020 16:43:52 +0100 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: dri-devel@lists.freedesktop.org, Arnd Bergmann , Mika Kuoppala , intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org, Daniele Ceraolo Spurio , Matthew Auld , "Robert M. Fosha" Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Quoting Arnd Bergmann (2020-05-27 15:05:09) > gcc-9 gets confused by the code flow in check_dirty_whitelist: > > drivers/gpu/drm/i915/gt/selftest_workarounds.c: In function 'check_dirty_whitelist': > drivers/gpu/drm/i915/gt/selftest_workarounds.c:492:17: error: 'rsvd' may be used uninitialized in this function [-Werror=maybe-uninitialized] > > I could not figure out a good way to do this in a way that gcc > understands better, so initialize the variable to zero, as last > resort. Does it look neater if we initialise it as a local? No. Reviewed-by: Chris Wilson -Chris _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel