From patchwork Tue Aug 9 17:35:10 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Dave Gordon X-Patchwork-Id: 9271963 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 9F47860754 for ; Tue, 9 Aug 2016 17:35:28 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 93232282EC for ; Tue, 9 Aug 2016 17:35:28 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 87FAA28384; Tue, 9 Aug 2016 17:35:28 +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=unavailable 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 5DC33282EC for ; Tue, 9 Aug 2016 17:35:28 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 25AB96E614; Tue, 9 Aug 2016 17:35:26 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by gabe.freedesktop.org (Postfix) with ESMTP id C071C6E605; Tue, 9 Aug 2016 17:35:24 +0000 (UTC) Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga102.jf.intel.com with ESMTP; 09 Aug 2016 10:35:24 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos; i="5.28,495,1464678000"; d="scan'208"; a="1032571047" Received: from dsgordon-linux2.isw.intel.com ([10.102.226.88]) by orsmga002.jf.intel.com with ESMTP; 09 Aug 2016 10:35:23 -0700 From: Dave Gordon To: intel-gfx@lists.freedesktop.org Subject: [PATCH] drm: avoid "possible bad bitmask?" warning Date: Tue, 9 Aug 2016 18:35:10 +0100 Message-Id: <1470764110-23855-1-git-send-email-david.s.gordon@intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: References: MIME-Version: 1.0 Organization: Intel Corporation (UK) Ltd. - Co. Reg. #1134945 - Pipers Way, Swindon SN3 1RJ Cc: David Binderman , dri-devel@lists.freedesktop.org, Dave Gordon 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: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP Recent versions of gcc say this: include/drm/i915_drm.h:96:34: warning: result of β€˜65535 << 20’ requires 37 bits to represent, but β€˜int’ only has 32 bits [-Wshift-overflow=] Reported-by: David Binderman Signed-off-by: Dave Gordon Cc: Dave Airlie Reviewed-by: Chris Wilson --- include/drm/i915_drm.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/drm/i915_drm.h b/include/drm/i915_drm.h index b1755f8..4e1b274 100644 --- a/include/drm/i915_drm.h +++ b/include/drm/i915_drm.h @@ -93,6 +93,6 @@ extern bool i915_gpu_turbo_disable(void); #define I845_TSEG_SIZE_1M (3 << 1) #define INTEL_BSM 0x5c -#define INTEL_BSM_MASK (0xFFFF << 20) +#define INTEL_BSM_MASK (-(1u << 20)) #endif /* _I915_DRM_H_ */