From patchwork Fri Mar 29 02:43:19 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Simon Horman X-Patchwork-Id: 2362761 Return-Path: X-Original-To: patchwork-ltsi-dev@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from mail.linuxfoundation.org (mail.linuxfoundation.org [140.211.169.12]) by patchwork1.kernel.org (Postfix) with ESMTP id CB85C3FD40 for ; Fri, 29 Mar 2013 02:55:02 +0000 (UTC) Received: from mail.linux-foundation.org (localhost [IPv6:::1]) by mail.linuxfoundation.org (Postfix) with ESMTP id 993689A8; Fri, 29 Mar 2013 02:47:29 +0000 (UTC) X-Original-To: ltsi-dev@lists.linuxfoundation.org Delivered-To: ltsi-dev@mail.linuxfoundation.org Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTP id 12656B04 for ; Fri, 29 Mar 2013 02:47:28 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey-1.7.6 Received: from kirsty.vergenet.net (kirsty.vergenet.net [202.4.237.240]) by smtp1.linuxfoundation.org (Postfix) with ESMTP id DEEF12017C for ; Fri, 29 Mar 2013 02:47:15 +0000 (UTC) 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 683EB2C69F2; Fri, 29 Mar 2013 13:45:55 +1100 (EST) Received: by ayumi.akashicho.tokyo.vergenet.net (Postfix, from userid 7100) id 0B26CEDEA1E; Fri, 29 Mar 2013 11:45:53 +0900 (JST) From: Simon Horman To: ltsi-dev@lists.linuxfoundation.org Date: Fri, 29 Mar 2013 11:43:19 +0900 Message-Id: <1364525119-31791-271-git-send-email-horms+renesas@verge.net.au> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1364525119-31791-1-git-send-email-horms+renesas@verge.net.au> References: <1364525119-31791-1-git-send-email-horms+renesas@verge.net.au> X-Spam-Status: No, score=-3.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_LOW, RP_MATCHES_RCVD autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on smtp1.linux-foundation.org Cc: Magnus Damm Subject: [LTSI-dev] [PATCH/RFC 270/390] sh-pfc: Drop the sh_pfc_pinctrl spinlock X-BeenThere: ltsi-dev@lists.linuxfoundation.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: "A list to discuss patches, development, and other things related to the LTSI project" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: ltsi-dev-bounces@lists.linuxfoundation.org Errors-To: ltsi-dev-bounces@lists.linuxfoundation.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 (cherry picked from commit e3e89ae43e132b80039614098597ad2fec6cfbb1) Signed-off-by: Simon Horman --- 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;