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[2620:137:e000::1:20]) by mx.google.com with ESMTP id j6-20020a056a00174600b0062607a24e9bsi35617645pfc.68.2023.03.30.03.45.14; Thu, 30 Mar 2023 03:45:26 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@intel.com header.s=Intel header.b="fWwtd6i/"; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=intel.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229778AbjC3KnW (ORCPT + 99 others); Thu, 30 Mar 2023 06:43:22 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33380 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229488AbjC3KnV (ORCPT ); Thu, 30 Mar 2023 06:43:21 -0400 Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9AB7A7682 for ; Thu, 30 Mar 2023 03:43:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1680173000; x=1711709000; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=Ygo93piNDua7J8VtxEGX71H4GSn6S2H4oKkR/7x2I1U=; b=fWwtd6i/MBTP2J1tsO/Ilti1N3WLMNLmKhxJZ6OR/nkrKd/3lUERvdds M3hZYxZpfMN/ctUfZsEBW/ppSzDPPmZYa2EM6DIjOiAqUZ1nFBOAbFOQp N7lNL3RwEAXAnPl3eg2sybMFBqBt4idEC/h982Q3QLwtLwXth5MguGnCN AlWvy1Huj/QZQ3/9uAhySxAPEf7LyuoeojjRpVQZ5oWkS6+pSmznOxR9L Q30zkvTwD+R7gu9VAaxNubAVHpv6CjwpO1+sPIh3LXSyC+XkBAq5KEe0F jmlAsX2Rjns9b+Uku2NLVPGAIMxRfiaw/lydtOcAoyuSHK8wk8YLuw3kg w==; X-IronPort-AV: E=McAfee;i="6600,9927,10664"; a="406096325" X-IronPort-AV: E=Sophos;i="5.98,303,1673942400"; d="scan'208";a="406096325" Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 30 Mar 2023 03:43:20 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10664"; a="687197227" X-IronPort-AV: E=Sophos;i="5.98,303,1673942400"; d="scan'208";a="687197227" Received: from unknown (HELO localhost) ([10.237.66.160]) by fmsmga007-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 30 Mar 2023 03:43:17 -0700 From: Jani Nikula To: linux-kernel@vger.kernel.org Cc: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, jani.nikula@intel.com, Andrew Morton , =?UTF-8?q?Christian=20K=C3=B6nig?= , David Gow Subject: [PATCH 0/4] log2: make is_power_of_2() more generic Date: Thu, 30 Mar 2023 13:42:39 +0300 Message-Id: <20230330104243.2120761-1-jani.nikula@intel.com> X-Mailer: git-send-email 2.39.2 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-2.5 required=5.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED, RCVD_IN_MSPIKE_H2,SPF_HELO_NONE,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org is_power_of_2() only works for types <= sizeof(unsigned long) and it's also not a constant expression. There are a number of places in kernel where is_power_of_2() is called on u64, which fails on 32-bit builds. Try to remedy that. While at it, make it a constant expression when possible. I admit I've only lightly tested this, and I haven't tried it with allmodconfig. Jani Nikula (4): log2: add helper __IS_POWER_OF_2() log2: have is_power_of_2() support bigger types than unsigned long log2: allow use of is_power_of_2() in constant expressions drm/i915/reg: use is_power_of_2() from log2.h drivers/gpu/drm/i915/i915_reg_defs.h | 7 +------ include/linux/log2.h | 25 ++++++++++++++++++++----- 2 files changed, 21 insertions(+), 11 deletions(-) -- 2.39.2