From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3C768C43603 for ; Wed, 4 Dec 2019 15:59:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 10005206DB for ; Wed, 4 Dec 2019 15:59:31 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=bgdev-pl.20150623.gappssmtp.com header.i=@bgdev-pl.20150623.gappssmtp.com header.b="T6VXt8MI" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728602AbfLDP7a (ORCPT ); Wed, 4 Dec 2019 10:59:30 -0500 Received: from mail-wm1-f66.google.com ([209.85.128.66]:53829 "EHLO mail-wm1-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728539AbfLDP70 (ORCPT ); Wed, 4 Dec 2019 10:59:26 -0500 Received: by mail-wm1-f66.google.com with SMTP id u18so247520wmc.3 for ; Wed, 04 Dec 2019 07:59:25 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bgdev-pl.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=PwQtKdAUQY+SBl5OsHs80mv2U9tLV35lkOjHDH8uz/U=; b=T6VXt8MIgYcU7MsY3TdXMqG4/4HRWYESABPYgT0VZoaE8H5/6QTNNqzLD5Fongh5Tb b5c6LbaV+5bgyTMxcNS6MkTu6OfOzoVpNioIMUXWSWd90IWYsnDEpqZfY/23mJoRMli7 JIk+qU5sKkCujWkOd5jh43Xg3azL//AlEYWP7TzpLe7pvRmELIiukwSk/bxGz4HuAdfe 6dkSfCEPXYp5Z8FfDp+FUAu4y8/065sYSdQbVu2Q0+Rk8Xdxi6rvgiv9el7E0+qH+Y8I lkBW1FXom8XEsWCOoity9VRoOjQxd0/TZ4qcBcuS2TIzgZIzvCfP0o4iZ1ourYKA0Ux0 IvMQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=PwQtKdAUQY+SBl5OsHs80mv2U9tLV35lkOjHDH8uz/U=; b=qzxal3fvRU+K1Y7ER0v+tZbCRlAn9tDOHGn7Sdc/C8OMYC8BXONljqAbBV4EjY0dJC gw4mTlK/bnryzqmj0Mp8vkczGvwWJuiTXpgXsLB5xN7MkuW6qVHxilnTyRTM3nYJo6rI D6tw4SXLotBDWun4kVRM0SD4PRXc1eJOeZM/gNO8QY5xfwRAzBm6bhXYLxKbx/3VuhFa oInq42f9WQRu1d2uE/q9nkT+Zyms9ICBR3JX2aucyeKtPhsHHRyp4LfyGa9NYHJ53nAR DrNizyMhmyzHRgR5UezSry1OVoqeHNRCaex768Gfpkqo7NTpjXp+X/MPCH4CdENDJz8s SbGA== X-Gm-Message-State: APjAAAU3Hm8WBwFsVtbrIUn22f4KmVRRYRNiQGp6QZ/LgLBeXSokl4j6 95F5hGYN/GdswD4d9AQOiUXgDw== X-Google-Smtp-Source: APXvYqw3j9t+sv27rxv6BsQ+49qDiWvcgmeoGIG7o/TNn3GxBxvIPxAHFn+65IIuWJboL7cqmVfOJw== X-Received: by 2002:a1c:8055:: with SMTP id b82mr159701wmd.127.1575475164550; Wed, 04 Dec 2019 07:59:24 -0800 (PST) Received: from debian-brgl.home ([2a01:cb1d:af:5b00:6d6c:8493:1ab5:dad7]) by smtp.gmail.com with ESMTPSA id u18sm8640508wrt.26.2019.12.04.07.59.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 04 Dec 2019 07:59:23 -0800 (PST) From: Bartosz Golaszewski To: Kent Gibson , Linus Walleij Cc: linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, Bartosz Golaszewski Subject: [PATCH v2 05/11] gpiolib: use gpiochip_get_desc() in lineevent_create() Date: Wed, 4 Dec 2019 16:59:08 +0100 Message-Id: <20191204155912.17590-6-brgl@bgdev.pl> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191204155912.17590-1-brgl@bgdev.pl> References: <20191204155912.17590-1-brgl@bgdev.pl> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Bartosz Golaszewski Unduplicate the ngpio check by simply calling gpiochip_get_desc() and checking its return value. Signed-off-by: Bartosz Golaszewski --- drivers/gpio/gpiolib.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 6ef55cc1188b..17796437d7be 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -1009,8 +1009,9 @@ static int lineevent_create(struct gpio_device *gdev, void __user *ip) lflags = eventreq.handleflags; eflags = eventreq.eventflags; - if (offset >= gdev->ngpio) - return -EINVAL; + desc = gpiochip_get_desc(gdev->chip, offset); + if (IS_ERR(desc)) + return PTR_ERR(desc); /* Return an error if a unknown flag is set */ if ((lflags & ~GPIOHANDLE_REQUEST_VALID_FLAGS) || @@ -1048,7 +1049,6 @@ static int lineevent_create(struct gpio_device *gdev, void __user *ip) } } - desc = &gdev->descs[offset]; ret = gpiod_request(desc, le->label); if (ret) goto out_free_label; -- 2.23.0