From patchwork Mon Sep 14 08:55:37 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Shevchenko X-Patchwork-Id: 7173901 Return-Path: X-Original-To: patchwork-dmaengine@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id B3DB6BEEC1 for ; Mon, 14 Sep 2015 08:55:47 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id ED0F8204CF for ; Mon, 14 Sep 2015 08:55:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E6CBD2047B for ; Mon, 14 Sep 2015 08:55:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753603AbbINIzp (ORCPT ); Mon, 14 Sep 2015 04:55:45 -0400 Received: from mga01.intel.com ([192.55.52.88]:29310 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753003AbbINIzo (ORCPT ); Mon, 14 Sep 2015 04:55:44 -0400 Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga101.fm.intel.com with ESMTP; 14 Sep 2015 01:55:44 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.17,526,1437462000"; d="scan'208";a="804660689" Received: from black.fi.intel.com ([10.237.72.93]) by fmsmga002.fm.intel.com with ESMTP; 14 Sep 2015 01:55:43 -0700 Received: by black.fi.intel.com (Postfix, from userid 1003) id 69124CE; Mon, 14 Sep 2015 11:55:42 +0300 (EEST) From: Andy Shevchenko To: dmaengine@vger.kernel.org, Vinod Koul , Mika Westerberg Cc: Andy Shevchenko Subject: [PATCH v1 2/6] dmaengine: idma64: convert to __ffs() Date: Mon, 14 Sep 2015 11:55:37 +0300 Message-Id: <1442220941-15487-3-git-send-email-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.5.1 In-Reply-To: <1442220941-15487-1-git-send-email-andriy.shevchenko@linux.intel.com> References: <1442220941-15487-1-git-send-email-andriy.shevchenko@linux.intel.com> Sender: dmaengine-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: dmaengine@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP We replace __fls() by __ffs() since we have to find a *minimum* data width that satisfies both source and destination. Signed-off-by: Andy Shevchenko --- drivers/dma/idma64.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/dma/idma64.c b/drivers/dma/idma64.c index 48d6d9e..8aea9f0 100644 --- a/drivers/dma/idma64.c +++ b/drivers/dma/idma64.c @@ -257,15 +257,15 @@ static u64 idma64_hw_desc_fill(struct idma64_hw_desc *hw, dar = config->dst_addr; ctllo |= IDMA64C_CTLL_DST_FIX | IDMA64C_CTLL_SRC_INC | IDMA64C_CTLL_FC_M2P; - src_width = min_t(u32, 2, __fls(sar | hw->len)); - dst_width = __fls(config->dst_addr_width); + src_width = min_t(u32, 2, __ffs(sar | hw->len)); + dst_width = __ffs(config->dst_addr_width); } else { /* DMA_DEV_TO_MEM */ sar = config->src_addr; dar = hw->phys; ctllo |= IDMA64C_CTLL_DST_INC | IDMA64C_CTLL_SRC_FIX | IDMA64C_CTLL_FC_P2M; - src_width = __fls(config->src_addr_width); - dst_width = min_t(u32, 2, __fls(dar | hw->len)); + src_width = __ffs(config->src_addr_width); + dst_width = min_t(u32, 2, __ffs(dar | hw->len)); } lli->sar = sar;