From patchwork Mon Mar 18 11:05:00 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Simon Horman X-Patchwork-Id: 2288101 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) by patchwork2.kernel.org (Postfix) with ESMTP id BF23CDF215 for ; Mon, 18 Mar 2013 11:11:50 +0000 (UTC) Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1UHXv2-0002FI-Gy; Mon, 18 Mar 2013 11:07:56 +0000 Received: from kirsty.vergenet.net ([202.4.237.240]) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1UHXuZ-00025r-4k for linux-arm-kernel@lists.infradead.org; Mon, 18 Mar 2013 11:07:28 +0000 Received: from ayumi.akashicho.tokyo.vergenet.net (p8120-ipbfp1001kobeminato.hyogo.ocn.ne.jp [118.10.137.120]) by kirsty.vergenet.net (Postfix) with ESMTP id B8C74266CF0; Mon, 18 Mar 2013 22:07:23 +1100 (EST) Received: by ayumi.akashicho.tokyo.vergenet.net (Postfix, from userid 7100) id 5760BEDE148; Mon, 18 Mar 2013 20:07:22 +0900 (JST) From: Simon Horman To: Arnd Bergmann , Olof Johansson Subject: [PATCH 004/142] sh-pfc: Drop the sh_pfc_pinctrl spinlock Date: Mon, 18 Mar 2013 20:05:00 +0900 Message-Id: <1363604838-29359-5-git-send-email-horms+renesas@verge.net.au> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1363604838-29359-1-git-send-email-horms+renesas@verge.net.au> References: <1363604838-29359-1-git-send-email-horms+renesas@verge.net.au> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20130318_070727_683830_2A3AC892 X-CRM114-Status: GOOD ( 11.75 ) X-Spam-Score: -5.1 (-----) X-Spam-Report: SpamAssassin version 3.3.2 on merlin.infradead.org summary: Content analysis details: (-5.1 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low trust [202.4.237.240 listed in list.dnswl.org] -2.5 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Cc: Laurent Pinchart , linux-sh@vger.kernel.org, Linus Walleij , Magnus Damm , arm@kernel.org, linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org From: Laurent Pinchart The spinlock is used to protect data that is only accessed sequentially during initialization. Remove it. Signed-off-by: Laurent Pinchart Acked-by: Linus Walleij --- drivers/pinctrl/sh-pfc/pinctrl.c | 13 ------------- 1 file changed, 13 deletions(-) diff --git a/drivers/pinctrl/sh-pfc/pinctrl.c b/drivers/pinctrl/sh-pfc/pinctrl.c index d113746..9bd0a83 100644 --- a/drivers/pinctrl/sh-pfc/pinctrl.c +++ b/drivers/pinctrl/sh-pfc/pinctrl.c @@ -37,8 +37,6 @@ struct sh_pfc_pinctrl { struct pinctrl_pin_desc *pads; unsigned int nr_pads; - - spinlock_t lock; }; static int sh_pfc_get_groups_count(struct pinctrl_dev *pctldev) @@ -321,7 +319,6 @@ static void sh_pfc_map_one_gpio(struct sh_pfc *pfc, struct sh_pfc_pinctrl *pmx, struct pinmux_gpio *gpio, unsigned offset) { struct pinmux_data_reg *dummy; - unsigned long flags; int bit; gpio->flags &= ~PINMUX_FLAG_TYPE; @@ -330,10 +327,7 @@ static void sh_pfc_map_one_gpio(struct sh_pfc *pfc, struct sh_pfc_pinctrl *pmx, gpio->flags |= PINMUX_TYPE_GPIO; else { gpio->flags |= PINMUX_TYPE_FUNCTION; - - spin_lock_irqsave(&pmx->lock, flags); pmx->nr_functions++; - spin_unlock_irqrestore(&pmx->lock, flags); } } @@ -381,7 +375,6 @@ static int sh_pfc_map_gpios(struct sh_pfc *pfc, struct sh_pfc_pinctrl *pmx) static int sh_pfc_map_functions(struct sh_pfc *pfc, struct sh_pfc_pinctrl *pmx) { - unsigned long flags; int i, fn; pmx->functions = devm_kzalloc(pfc->dev, pmx->nr_functions * @@ -389,8 +382,6 @@ static int sh_pfc_map_functions(struct sh_pfc *pfc, struct sh_pfc_pinctrl *pmx) if (unlikely(!pmx->functions)) return -ENOMEM; - spin_lock_irqsave(&pmx->lock, flags); - for (i = fn = 0; i < pmx->nr_pads; i++) { struct pinmux_gpio *gpio = pfc->info->gpios + i; @@ -398,8 +389,6 @@ static int sh_pfc_map_functions(struct sh_pfc *pfc, struct sh_pfc_pinctrl *pmx) pmx->functions[fn++] = gpio; } - spin_unlock_irqrestore(&pmx->lock, flags); - return 0; } @@ -412,8 +401,6 @@ int sh_pfc_register_pinctrl(struct sh_pfc *pfc) if (unlikely(!pmx)) return -ENOMEM; - spin_lock_init(&pmx->lock); - pmx->pfc = pfc; pfc->pinctrl = pmx;