From patchwork Thu Jan 2 15:12:01 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Russell King X-Patchwork-Id: 3425371 Return-Path: X-Original-To: patchwork-dmaengine@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 2D5999F381 for ; Thu, 2 Jan 2014 15:15:23 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 0226220145 for ; Thu, 2 Jan 2014 15:15:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D0E482015A for ; Thu, 2 Jan 2014 15:15:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751843AbaABPPK (ORCPT ); Thu, 2 Jan 2014 10:15:10 -0500 Received: from gw-1.arm.linux.org.uk ([78.32.30.217]:54168 "EHLO pandora.arm.linux.org.uk" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752086AbaABPPH (ORCPT ); Thu, 2 Jan 2014 10:15:07 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=arm.linux.org.uk; s=pandora; h=Date:Sender:Message-Id:Subject:Cc:To:From:References:In-Reply-To; bh=WVLIEc1DtnDmvo423GM29PaqVtV7SuPwb0BdtrIIuWY=; b=o4XwvAF52xr0GVh7LVGEILrzCBau0P2587BYxwPvg8myWYZiMNVGNrSCtFKD58zaMPWBVxvNbpOiDcTmk/Topx5t0FJebgu9yppjGX+fgWyDHenAOVhR0mCgy8IhTsfe22zyeOYvAZwzPY/WeV9yfElfdomQhz1E8jk9wQ4g1zc=; Received: from [fd8f:7570:feb6:1:222:68ff:fe15:37dd] (port=48558 helo=rmk-PC.arm.linux.org.uk) by pandora.arm.linux.org.uk with esmtpsa (TLSv1:AES256-SHA:256) (Exim 4.76) (envelope-from ) id 1VyjwI-0003e1-2s; Thu, 02 Jan 2014 15:12:02 +0000 Received: from rmk by rmk-PC.arm.linux.org.uk with local (Exim 4.76) (envelope-from ) id 1VyjwH-0005FD-Na; Thu, 02 Jan 2014 15:12:01 +0000 In-Reply-To: <20140102150836.GA3826@n2100.arm.linux.org.uk> References: <20140102150836.GA3826@n2100.arm.linux.org.uk> From: Russell King To: dmaengine@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-omap@vger.kernel.org Cc: Tony Lindgren Subject: [PATCH RFC 19/26] ARM: omap: remove almost-const variables Message-Id: Date: Thu, 02 Jan 2014 15:12:01 +0000 Sender: dmaengine-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: dmaengine@vger.kernel.org X-Spam-Status: No, score=-7.3 required=5.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_HI,RP_MATCHES_RCVD,T_DKIM_INVALID,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 dma_stride and dma_common_ch_start are only ever initialised to one known value at initialisation, and are private to each of these files. There's no point these being variables at all. Signed-off-by: Russell King --- arch/arm/mach-omap1/dma.c | 14 ++++---------- arch/arm/mach-omap2/dma.c | 14 +++++--------- 2 files changed, 9 insertions(+), 19 deletions(-) diff --git a/arch/arm/mach-omap1/dma.c b/arch/arm/mach-omap1/dma.c index d292055d3117..11f0b0ee67a3 100644 --- a/arch/arm/mach-omap1/dma.c +++ b/arch/arm/mach-omap1/dma.c @@ -36,8 +36,6 @@ static u32 errata; static u32 enable_1510_mode; -static u8 dma_stride; -static enum omap_reg_offsets dma_common_ch_start, dma_common_ch_end; static u16 reg_map[] = { [GCR] = 0x400, @@ -184,7 +182,7 @@ static inline void dma_write(u32 val, int reg, int lch) u8 stride; u32 offset; - stride = (reg >= dma_common_ch_start) ? dma_stride : 0; + stride = (reg >= CPC) ? OMAP1_DMA_STRIDE : 0; offset = reg_map[reg] + (stride * lch); __raw_writew(val, dma_base + offset); @@ -200,7 +198,7 @@ static inline u32 dma_read(int reg, int lch) u8 stride; u32 offset, val; - stride = (reg >= dma_common_ch_start) ? dma_stride : 0; + stride = (reg >= CPC) ? OMAP1_DMA_STRIDE : 0; offset = reg_map[reg] + (stride * lch); val = __raw_readw(dma_base + offset); @@ -216,9 +214,9 @@ static inline u32 dma_read(int reg, int lch) static void omap1_clear_lch_regs(int lch) { - int i = dma_common_ch_start; + int i; - for (; i <= dma_common_ch_end; i += 1) + for (i = CPC; i <= COLOR; i += 1) dma_write(0, i, lch); } @@ -380,10 +378,6 @@ static int __init omap1_system_dma_init(void) goto exit_release_chan; } - dma_stride = OMAP1_DMA_STRIDE; - dma_common_ch_start = CPC; - dma_common_ch_end = COLOR; - dma_pdev = platform_device_register_full(&omap_dma_dev_info); if (IS_ERR(dma_pdev)) { ret = PTR_ERR(dma_pdev); diff --git a/arch/arm/mach-omap2/dma.c b/arch/arm/mach-omap2/dma.c index 81c2d3383bc5..e4ac7ac9a228 100644 --- a/arch/arm/mach-omap2/dma.c +++ b/arch/arm/mach-omap2/dma.c @@ -38,11 +38,10 @@ #define OMAP2_DMA_STRIDE 0x60 static u32 errata; -static u8 dma_stride; static struct omap_dma_dev_attr *d; -static enum omap_reg_offsets dma_common_ch_start, dma_common_ch_end; +static enum omap_reg_offsets dma_common_ch_end; static u16 reg_map[] = { [REVISION] = 0x00, @@ -96,7 +95,7 @@ static inline void dma_write(u32 val, int reg, int lch) u8 stride; u32 offset; - stride = (reg >= dma_common_ch_start) ? dma_stride : 0; + stride = (reg >= CSDP) ? OMAP2_DMA_STRIDE : 0; offset = reg_map[reg] + (stride * lch); __raw_writel(val, dma_base + offset); } @@ -106,7 +105,7 @@ static inline u32 dma_read(int reg, int lch) u8 stride; u32 offset, val; - stride = (reg >= dma_common_ch_start) ? dma_stride : 0; + stride = (reg >= CSDP) ? OMAP2_DMA_STRIDE : 0; offset = reg_map[reg] + (stride * lch); val = __raw_readl(dma_base + offset); return val; @@ -114,9 +113,9 @@ static inline u32 dma_read(int reg, int lch) static void omap2_clear_dma(int lch) { - int i = dma_common_ch_start; + int i; - for (; i <= dma_common_ch_end; i += 1) + for (i = CSDP; i <= dma_common_ch_end; i += 1) dma_write(0, i, lch); } @@ -219,9 +218,6 @@ static int __init omap2_system_dma_init_dev(struct omap_hwmod *oh, void *unused) struct resource *mem; char *name = "omap_dma_system"; - dma_stride = OMAP2_DMA_STRIDE; - dma_common_ch_start = CSDP; - p = kzalloc(sizeof(struct omap_system_dma_plat_info), GFP_KERNEL); if (!p) { pr_err("%s: Unable to allocate pdata for %s:%s\n",