From patchwork Fri Jul 24 07:40:30 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krzysztof Kozlowski X-Patchwork-Id: 11682563 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 197BD13B4 for ; Fri, 24 Jul 2020 07:48:28 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (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 E6223206F0 for ; Fri, 24 Jul 2020 07:48:27 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="06Y+MiLL"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="t7ZFTeXF" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E6223206F0 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-mediatek-bounces+patchwork-linux-mediatek=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:MIME-Version:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:References:In-Reply-To:Message-Id:Date:Subject:To: From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=MgqA0SKXt4PgDzbRymOWSqoZ2zTfFIyu+1AbcV5JAb8=; b=06Y+MiLLVdey1+ajXr9VJuWJo5 4dEQK1ZG4Z2dvW3nyWU6MS0+OLqJWyJqtblKtZMLQMs8EY3kUNCOE53DjF/gnkg9yNtDbP7T5RbdB c8PCey3PPxjffuQ/f554RWbHxbhrwN6nIg2I0oqf9d7AgCE+9PegtKxU1H3U4MJubK5ml3P+Rv/Qo K+79A+PF/6jDK5PiSvS9W0SRDiQZnWcz+9wJ3bCk8VGtiBrqwzskTNzv8utc2vUwn5MgbdfVoiArp agglV0ef8jmZLLGYvUlUT+qicO4jiG6yAEuEqZo1arf63YbpGxc5Qfpg6zMvj3oMPkXO6wkbogE8l Yx3A7DqQ==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jysRN-0005VV-JI; Fri, 24 Jul 2020 07:48:25 +0000 Received: from mail.kernel.org ([198.145.29.99]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jysM3-0002fu-7H; Fri, 24 Jul 2020 07:42:57 +0000 Received: from kozik-lap.mshome.net (unknown [194.230.155.213]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id B5ED420748; Fri, 24 Jul 2020 07:42:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1595576573; bh=2Rm5mXLPGu2klynxz/wgAlx0P00OyT74+wkJ2mwUL2k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=t7ZFTeXFvEV2cZHuvz+CymGUEumDZ2dHE5mdLJexSCZUCdJ5l/koZErDREG867iAf af3T+CNQkO+IJM2dMIHzDozQEm4JRVZ7LeccpWIQ4lvzhc0tjZnQsm2g0hTbIo5wiD Jy4mu6SdpYNoiL7kcOjp1FIUQ23Ib1hA00VJR4Ss= From: Krzysztof Kozlowski To: Arnd Bergmann , Olof Johansson , Markus Mayer , bcm-kernel-feedback-list@broadcom.com, Florian Fainelli , Santosh Shilimkar , Matthias Brugger , Roger Quadros , Tony Lindgren , Vladimir Zapolskiy , Kukjin Kim , Thierry Reding , Jonathan Hunter , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-omap@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-tegra@vger.kernel.org Subject: [RFT v2 21/29] memory: omap-gpmc: Remove GPMC_SET_ONE_CD_MAX macro for safety Date: Fri, 24 Jul 2020 09:40:30 +0200 Message-Id: <20200724074038.5597-22-krzk@kernel.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200724074038.5597-1-krzk@kernel.org> References: <20200724074038.5597-1-krzk@kernel.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200724_034255_513326_C277C97E X-CRM114-Status: GOOD ( 18.70 ) X-Spam-Score: -5.2 (-----) X-Spam-Report: SpamAssassin version 3.4.4 on merlin.infradead.org summary: Content analysis details: (-5.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -5.0 RCVD_IN_DNSWL_HI RBL: Sender listed at https://www.dnswl.org/, high trust [198.145.29.99 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.0 DKIMWL_WL_HIGH DKIMwl.org - Whitelisted High sender X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Andrew Morton , Linus Torvalds , Krzysztof Kozlowski MIME-Version: 1.0 Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+patchwork-linux-mediatek=patchwork.kernel.org@lists.infradead.org The GPMC_SET_ONE_CD_MAX macro uses return statement and variable 'cs' coming from called scope. This is not a good practice. Also checkpatch complained: WARNING: Macros with flow control statements should be avoided ERROR: Macros starting with if should be enclosed by a do - while loop to avoid possible if/else logic defects Since GPMC_SET_ONE_CD_MAX macro just calls one function, it can be open coded. The difference with original code is that function will exit on error not after every register set, but after a group of sets. Signed-off-by: Krzysztof Kozlowski --- Not tested Changes since v1: 1. Drop the macro, after comments from Arnd. --- drivers/memory/omap-gpmc.c | 137 +++++++++++++++++++++++++------------ 1 file changed, 93 insertions(+), 44 deletions(-) diff --git a/drivers/memory/omap-gpmc.c b/drivers/memory/omap-gpmc.c index 1e370142dfca..2a2d0297e071 100644 --- a/drivers/memory/omap-gpmc.c +++ b/drivers/memory/omap-gpmc.c @@ -635,14 +635,6 @@ static int set_gpmc_timing_reg(int cs, int reg, int st_bit, int end_bit, int max return 0; } -#define GPMC_SET_ONE_CD_MAX(reg, st, end, max, field, cd) \ - if (set_gpmc_timing_reg(cs, (reg), (st), (end), (max), \ - t->field, (cd), #field) < 0) \ - return -ENXIO - -#define GPMC_SET_ONE(reg, st, end, field) \ - GPMC_SET_ONE_CD_MAX(reg, st, end, 0, field, GPMC_CD_FCLK) - /** * gpmc_calc_waitmonitoring_divider - calculate proper GPMCFCLKDIVIDER based on WAITMONITORINGTIME * WAITMONITORINGTIME will be _at least_ as long as desired, i.e. @@ -703,7 +695,7 @@ int gpmc_calc_divider(unsigned int sync_clk) int gpmc_cs_set_timings(int cs, const struct gpmc_timings *t, const struct gpmc_settings *s) { - int div; + int div, ret; u32 l; div = gpmc_calc_divider(t->sync_clk); @@ -737,53 +729,110 @@ int gpmc_cs_set_timings(int cs, const struct gpmc_timings *t, } } - GPMC_SET_ONE(GPMC_CS_CONFIG2, 0, 3, cs_on); - GPMC_SET_ONE(GPMC_CS_CONFIG2, 8, 12, cs_rd_off); - GPMC_SET_ONE(GPMC_CS_CONFIG2, 16, 20, cs_wr_off); + ret = 0; + ret |= set_gpmc_timing_reg(cs, GPMC_CS_CONFIG2, 0, 3, 0, t->cs_on, + GPMC_CD_FCLK, "cs_on"); + ret |= set_gpmc_timing_reg(cs, GPMC_CS_CONFIG2, 8, 12, 0, t->cs_rd_off, + GPMC_CD_FCLK, "cs_rd_off"); + ret |= set_gpmc_timing_reg(cs, GPMC_CS_CONFIG2, 16, 20, 0, t->cs_wr_off, + GPMC_CD_FCLK, "cs_wr_off"); + if (ret) + return -ENXIO; + + ret |= set_gpmc_timing_reg(cs, GPMC_CS_CONFIG3, 0, 3, 0, t->adv_on, + GPMC_CD_FCLK, "adv_on"); + ret |= set_gpmc_timing_reg(cs, GPMC_CS_CONFIG3, 8, 12, 0, t->adv_rd_off, + GPMC_CD_FCLK, "adv_rd_off"); + ret |= set_gpmc_timing_reg(cs, GPMC_CS_CONFIG3, 16, 20, 0, t->adv_wr_off, + GPMC_CD_FCLK, "adv_wr_off"); + if (ret) + return -ENXIO; - GPMC_SET_ONE(GPMC_CS_CONFIG3, 0, 3, adv_on); - GPMC_SET_ONE(GPMC_CS_CONFIG3, 8, 12, adv_rd_off); - GPMC_SET_ONE(GPMC_CS_CONFIG3, 16, 20, adv_wr_off); if (gpmc_capability & GPMC_HAS_MUX_AAD) { - GPMC_SET_ONE(GPMC_CS_CONFIG3, 4, 6, adv_aad_mux_on); - GPMC_SET_ONE(GPMC_CS_CONFIG3, 24, 26, adv_aad_mux_rd_off); - GPMC_SET_ONE(GPMC_CS_CONFIG3, 28, 30, adv_aad_mux_wr_off); + ret |= set_gpmc_timing_reg(cs, GPMC_CS_CONFIG3, 4, 6, 0, + t->adv_aad_mux_on, GPMC_CD_FCLK, + "adv_aad_mux_on"); + ret |= set_gpmc_timing_reg(cs, GPMC_CS_CONFIG3, 24, 26, 0, + t->adv_aad_mux_rd_off, GPMC_CD_FCLK, + "adv_aad_mux_rd_off"); + ret |= set_gpmc_timing_reg(cs, GPMC_CS_CONFIG3, 28, 30, 0, + t->adv_aad_mux_wr_off, GPMC_CD_FCLK, + "adv_aad_mux_wr_off"); + if (ret) + return -ENXIO; } - GPMC_SET_ONE(GPMC_CS_CONFIG4, 0, 3, oe_on); - GPMC_SET_ONE(GPMC_CS_CONFIG4, 8, 12, oe_off); + ret |= set_gpmc_timing_reg(cs, GPMC_CS_CONFIG4, 0, 3, 0, t->oe_on, + GPMC_CD_FCLK, "oe_on"); + ret |= set_gpmc_timing_reg(cs, GPMC_CS_CONFIG4, 8, 12, 0, t->oe_off, + GPMC_CD_FCLK, "oe_off"); if (gpmc_capability & GPMC_HAS_MUX_AAD) { - GPMC_SET_ONE(GPMC_CS_CONFIG4, 4, 6, oe_aad_mux_on); - GPMC_SET_ONE(GPMC_CS_CONFIG4, 13, 15, oe_aad_mux_off); + ret |= set_gpmc_timing_reg(cs, GPMC_CS_CONFIG4, 4, 6, 0, + t->oe_aad_mux_on, GPMC_CD_FCLK, + "oe_aad_mux_on"); + ret |= set_gpmc_timing_reg(cs, GPMC_CS_CONFIG4, 13, 15, 0, + t->oe_aad_mux_off, GPMC_CD_FCLK, + "oe_aad_mux_off"); + } + ret |= set_gpmc_timing_reg(cs, GPMC_CS_CONFIG4, 16, 19, 0, t->we_on, + GPMC_CD_FCLK, "we_on"); + ret |= set_gpmc_timing_reg(cs, GPMC_CS_CONFIG4, 24, 28, 0, t->we_off, + GPMC_CD_FCLK, "we_off"); + if (ret) + return -ENXIO; + + ret |= set_gpmc_timing_reg(cs, GPMC_CS_CONFIG5, 0, 4, 0, t->rd_cycle, + GPMC_CD_FCLK, "rd_cycle"); + ret |= set_gpmc_timing_reg(cs, GPMC_CS_CONFIG5, 8, 12, 0, t->wr_cycle, + GPMC_CD_FCLK, "wr_cycle"); + ret |= set_gpmc_timing_reg(cs, GPMC_CS_CONFIG5, 16, 20, 0, t->access, + GPMC_CD_FCLK, "access"); + ret |= set_gpmc_timing_reg(cs, GPMC_CS_CONFIG5, 24, 27, 0, + t->page_burst_access, GPMC_CD_FCLK, + "page_burst_access"); + if (ret) + return -ENXIO; + + ret |= set_gpmc_timing_reg(cs, GPMC_CS_CONFIG6, 0, 3, 0, + t->bus_turnaround, GPMC_CD_FCLK, + "bus_turnaround"); + ret |= set_gpmc_timing_reg(cs, GPMC_CS_CONFIG6, 8, 11, 0, + t->cycle2cycle_delay, GPMC_CD_FCLK, + "cycle2cycle_delay"); + if (ret) + return -ENXIO; + + if (gpmc_capability & GPMC_HAS_WR_DATA_MUX_BUS) { + ret |= set_gpmc_timing_reg(cs, GPMC_CS_CONFIG6, 16, 19, 0, + t->wr_data_mux_bus, GPMC_CD_FCLK, + "wr_data_mux_bus"); + if (ret) + return -ENXIO; + } + if (gpmc_capability & GPMC_HAS_WR_ACCESS) { + ret |= set_gpmc_timing_reg(cs, GPMC_CS_CONFIG6, 24, 28, 0, + t->wr_access, GPMC_CD_FCLK, + "wr_access"); + if (ret) + return -ENXIO; } - GPMC_SET_ONE(GPMC_CS_CONFIG4, 16, 19, we_on); - GPMC_SET_ONE(GPMC_CS_CONFIG4, 24, 28, we_off); - - GPMC_SET_ONE(GPMC_CS_CONFIG5, 0, 4, rd_cycle); - GPMC_SET_ONE(GPMC_CS_CONFIG5, 8, 12, wr_cycle); - GPMC_SET_ONE(GPMC_CS_CONFIG5, 16, 20, access); - - GPMC_SET_ONE(GPMC_CS_CONFIG5, 24, 27, page_burst_access); - - GPMC_SET_ONE(GPMC_CS_CONFIG6, 0, 3, bus_turnaround); - GPMC_SET_ONE(GPMC_CS_CONFIG6, 8, 11, cycle2cycle_delay); - - if (gpmc_capability & GPMC_HAS_WR_DATA_MUX_BUS) - GPMC_SET_ONE(GPMC_CS_CONFIG6, 16, 19, wr_data_mux_bus); - if (gpmc_capability & GPMC_HAS_WR_ACCESS) - GPMC_SET_ONE(GPMC_CS_CONFIG6, 24, 28, wr_access); l = gpmc_cs_read_reg(cs, GPMC_CS_CONFIG1); l &= ~0x03; l |= (div - 1); gpmc_cs_write_reg(cs, GPMC_CS_CONFIG1, l); - GPMC_SET_ONE_CD_MAX(GPMC_CS_CONFIG1, 18, 19, - GPMC_CONFIG1_WAITMONITORINGTIME_MAX, - wait_monitoring, GPMC_CD_CLK); - GPMC_SET_ONE_CD_MAX(GPMC_CS_CONFIG1, 25, 26, - GPMC_CONFIG1_CLKACTIVATIONTIME_MAX, - clk_activation, GPMC_CD_FCLK); + ret = 0; + ret |= set_gpmc_timing_reg(cs, GPMC_CS_CONFIG1, 18, 19, + GPMC_CONFIG1_WAITMONITORINGTIME_MAX, + t->wait_monitoring, GPMC_CD_CLK, + "wait_monitoring"); + ret |= set_gpmc_timing_reg(cs, GPMC_CS_CONFIG1, 25, 26, + GPMC_CONFIG1_CLKACTIVATIONTIME_MAX, + t->clk_activation, GPMC_CD_FCLK, + "clk_activation"); + if (ret) + return -ENXIO; #ifdef CONFIG_OMAP_GPMC_DEBUG pr_info("GPMC CS%d CLK period is %lu ns (div %d)\n",