From patchwork Fri Feb 21 15:48:34 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bartosz Golaszewski X-Patchwork-Id: 1242180 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (no SPF record) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-gpio-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=bgdev.pl Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=bgdev-pl.20150623.gappssmtp.com header.i=@bgdev-pl.20150623.gappssmtp.com header.a=rsa-sha256 header.s=20150623 header.b=RI1Eye7X; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 48PG8m32FKz9sP7 for ; Sat, 22 Feb 2020 02:48:56 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729263AbgBUPsz (ORCPT ); Fri, 21 Feb 2020 10:48:55 -0500 Received: from mail-wm1-f65.google.com ([209.85.128.65]:51978 "EHLO mail-wm1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729169AbgBUPsu (ORCPT ); Fri, 21 Feb 2020 10:48:50 -0500 Received: by mail-wm1-f65.google.com with SMTP id t23so2276332wmi.1 for ; Fri, 21 Feb 2020 07:48:49 -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=Kc3RH6cl8PrURMVC2HcOMEqzVbKCqch6ndQPKF/V66A=; b=RI1Eye7XDj1Sf4dEbOo6SKh+OtOPT62d9EGBP15dioK9//v/oxEheCrG4DZXrkVurJ VEU03SSY5RtDayC9Ly5GNiz1jPKY8k7sxHYdSIOzdX6lnBGm1HBtvLxdaqnJSz5MtGvB Bxg1LmCfvHxMb+Ux9j6QNOK7//ktcTYB3yHsnONKRDiNj3hKYEHh4TyZYJmJ6StVvCDb K3n+8GRLuWsP+tacCC4LVSnIg+Sy6ENIjVWC3xF4UEIuFu1cEOsj7A+HxoHe0CSrJroR 4mBHsP/ElDeMemZ10+r2VeAYr+5PcEoDnwO8CDjZL6XEfodYS2VWeDXPfYD43k9Ry8Dg 6qnA== 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=Kc3RH6cl8PrURMVC2HcOMEqzVbKCqch6ndQPKF/V66A=; b=lnD/HYxSmzF0uy8e2BeC/QGrhOeSreB1cVc1We1RVawo1vPUHIISBRLV3zohrBeegx wmrsWPbWkC0BGOZTnf1GEE/EoSHHLqTEo1Br9KwQlfsQUjp6xX0JVfglw7IHKHDdQ4dm GopinHdIfHuTeXKnINKH/SmOKhlrpdcFMVrACtB2tZ9VZgw0fwpCLxhjRkH6S0QPBwEY 93fDxH/H5LgbyWiPl5mSydIJTui3KUK12QjxIGLwf5yiNfbaCopc8Uzp/xCEWJD9TtiL jX2yQSsw0+Ldlx94Hb1Kc+elN+vfd7NsHBxkX/K9iMmyDRbZHmYo0e0CIriK2eVh91Ai cNGA== X-Gm-Message-State: APjAAAUl7Pic6xlFsYJzdxdiStjElITAUo/mJhshZPNBZILVTpQua066 HYIDnvsfWziLBKE1RNM9VY6qRQ== X-Google-Smtp-Source: APXvYqwm5JScae4Vtb7EJK4NqO1U0EeoMiI7GvTzMu19s3xt71xFidsN/+ghrTO1Ugo/ZubaVCEiZw== X-Received: by 2002:a7b:c119:: with SMTP id w25mr4640116wmi.116.1582300129076; Fri, 21 Feb 2020 07:48:49 -0800 (PST) Received: from localhost.localdomain (lfbn-nic-1-65-232.w2-15.abo.wanadoo.fr. [2.15.156.232]) by smtp.gmail.com with ESMTPSA id h10sm4267947wml.18.2020.02.21.07.48.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 21 Feb 2020 07:48:48 -0800 (PST) From: Bartosz Golaszewski To: Linus Walleij , Srinivas Kandagatla , Khouloud Touil , Geert Uytterhoeven Cc: linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, Bartosz Golaszewski Subject: [PATCH v5 2/5] gpiolib: provide VALIDATE_DESC_PTR() macro Date: Fri, 21 Feb 2020 16:48:34 +0100 Message-Id: <20200221154837.18845-3-brgl@bgdev.pl> X-Mailer: git-send-email 2.25.0 In-Reply-To: <20200221154837.18845-1-brgl@bgdev.pl> References: <20200221154837.18845-1-brgl@bgdev.pl> MIME-Version: 1.0 Sender: linux-gpio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org From: Bartosz Golaszewski We're about to add a public GPIO function that takes a descriptor as argument and returns a pointer. Add a corresponding macro wrapping the validate_desc() function that returns an ERR_PTR() on error. Signed-off-by: Bartosz Golaszewski Reviewed-by: Linus Walleij --- drivers/gpio/gpiolib.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 4d0106ceeba7..da8ffd40aa97 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -2864,6 +2864,14 @@ static int validate_desc(const struct gpio_desc *desc, const char *func) return; \ } while (0) +#define VALIDATE_DESC_PTR(desc) do { \ + int __valid = validate_desc(desc, __func__); \ + if (__valid < 0) \ + return ERR_PTR(__valid); \ + if (__valid == 0) \ + return NULL; \ + } while (0) + int gpiod_request(struct gpio_desc *desc, const char *label) { int ret = -EPROBE_DEFER;