From patchwork Fri Mar 29 02:41:35 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Simon Horman X-Patchwork-Id: 2362111 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 C23913FD40 for ; Fri, 29 Mar 2013 02:52:15 +0000 (UTC) Received: from mail.linux-foundation.org (localhost [IPv6:::1]) by mail.linuxfoundation.org (Postfix) with ESMTP id A3AD5A88; Fri, 29 Mar 2013 02:46:27 +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 9C66B9B0 for ; Fri, 29 Mar 2013 02:46:17 +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 B762720128 for ; Fri, 29 Mar 2013 02:46:07 +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 CD3F32C6A2A; Fri, 29 Mar 2013 13:45:43 +1100 (EST) Received: by ayumi.akashicho.tokyo.vergenet.net (Postfix, from userid 7100) id 6A41EEDE0B3; Fri, 29 Mar 2013 11:45:42 +0900 (JST) From: Simon Horman To: ltsi-dev@lists.linuxfoundation.org Date: Fri, 29 Mar 2013 11:41:35 +0900 Message-Id: <1364525119-31791-167-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 166/390] gpiolib: use gpio_chips list in gpiolib_sysfs_init 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: Alexandre Courbot Use the small list of GPIO chips instead of parsing the whole GPIO number space. Signed-off-by: Alexandre Courbot Reviewed-by: Linus Walleij Signed-off-by: Grant Likely (cherry picked from commit 65493e3ac429623df021e0859d97691f4b42615a) Signed-off-by: Simon Horman --- drivers/gpio/gpiolib.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 453ac77..c1d8f7b 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -974,7 +974,7 @@ static int __init gpiolib_sysfs_init(void) { int status; unsigned long flags; - unsigned gpio; + struct gpio_chip *chip; status = class_register(&gpio_class); if (status < 0) @@ -987,10 +987,7 @@ static int __init gpiolib_sysfs_init(void) * registered, and so arch_initcall() can always gpio_export(). */ spin_lock_irqsave(&gpio_lock, flags); - for (gpio = 0; gpio < ARCH_NR_GPIOS; gpio++) { - struct gpio_chip *chip; - - chip = gpio_desc[gpio].chip; + list_for_each_entry(chip, &gpio_chips, list) { if (!chip || chip->exported) continue;