From patchwork Tue Nov 5 20:35:52 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Shevchenko X-Patchwork-Id: 1189924 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=linux.intel.com Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 4771f00dFyz9sP3 for ; Wed, 6 Nov 2019 07:36:05 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725806AbfKEUgD (ORCPT ); Tue, 5 Nov 2019 15:36:03 -0500 Received: from mga04.intel.com ([192.55.52.120]:41970 "EHLO mga04.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727095AbfKEUgD (ORCPT ); Tue, 5 Nov 2019 15:36:03 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga005.jf.intel.com ([10.7.209.41]) by fmsmga104.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 05 Nov 2019 12:36:02 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.68,271,1569308400"; d="scan'208";a="376818796" Received: from black.fi.intel.com ([10.237.72.28]) by orsmga005.jf.intel.com with ESMTP; 05 Nov 2019 12:36:00 -0800 Received: by black.fi.intel.com (Postfix, from userid 1003) id B0ECF115; Tue, 5 Nov 2019 22:35:59 +0200 (EET) From: Andy Shevchenko To: Bartosz Golaszewski , Linus Walleij , linux-gpio@vger.kernel.org, Mika Westerberg , Hans de Goede Cc: Andy Shevchenko , Geert Uytterhoeven Subject: [PATCH v2 2/7] gpiolib: No need to call gpiochip_remove_pin_ranges() twice Date: Tue, 5 Nov 2019 22:35:52 +0200 Message-Id: <20191105203557.78562-3-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.24.0.rc1 In-Reply-To: <20191105203557.78562-1-andriy.shevchenko@linux.intel.com> References: <20191105203557.78562-1-andriy.shevchenko@linux.intel.com> MIME-Version: 1.0 Sender: linux-gpio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org of_gpiochip_add(), when fails, calls gpiochip_remove_pin_ranges(). ADD: gpiochip_add_data_with_key() -> of_gpiochip_add() -> (ERROR path) gpiochip_remove_pin_ranges() At the same time of_gpiochip_remove() calls exactly the above mentioned function unconditionally and so does gpiochip_remove(). REMOVE: gpiochip_remove() -> gpiochip_remove_pin_ranges() of_gpiochip_remove() -> gpiochip_remove_pin_ranges() Since gpiochip_remove() calls gpiochip_remove_pin_ranges() unconditionally, we have duplicate call to the same function when it's not necessary. Move gpiochip_remove_pin_ranges() from of_gpiochip_add() to gpiochip_add() to avoid duplicate calls and be consistent with the explicit call in gpiochip_remove(). Fixes: e93fa3f24353 ("gpiolib: remove duplicate pin range code") Depends-on: f7299d441a4d ("gpio: of: Fix of_gpiochip_add() error path") Cc: Geert Uytterhoeven Signed-off-by: Andy Shevchenko --- drivers/gpio/gpiolib-of.c | 5 +---- drivers/gpio/gpiolib.c | 3 ++- 2 files changed, 3 insertions(+), 5 deletions(-) diff --git a/drivers/gpio/gpiolib-of.c b/drivers/gpio/gpiolib-of.c index 0380a1d6b660..bd06743a5d7c 100644 --- a/drivers/gpio/gpiolib-of.c +++ b/drivers/gpio/gpiolib-of.c @@ -885,16 +885,13 @@ int of_gpiochip_add(struct gpio_chip *chip) of_node_get(chip->of_node); ret = of_gpiochip_scan_gpios(chip); - if (ret) { + if (ret) of_node_put(chip->of_node); - gpiochip_remove_pin_ranges(chip); - } return ret; } void of_gpiochip_remove(struct gpio_chip *chip) { - gpiochip_remove_pin_ranges(chip); of_node_put(chip->of_node); } diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index a13f656c3034..aaf9c0a74c38 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -1448,6 +1448,7 @@ int gpiochip_add_data_with_key(struct gpio_chip *chip, void *data, gpiochip_free_hogs(chip); of_gpiochip_remove(chip); err_free_gpiochip_mask: + gpiochip_remove_pin_ranges(chip); gpiochip_free_valid_mask(chip); err_remove_from_list: spin_lock_irqsave(&gpio_lock, flags); @@ -1503,8 +1504,8 @@ void gpiochip_remove(struct gpio_chip *chip) gdev->chip = NULL; gpiochip_irqchip_remove(chip); acpi_gpiochip_remove(chip); - gpiochip_remove_pin_ranges(chip); of_gpiochip_remove(chip); + gpiochip_remove_pin_ranges(chip); gpiochip_free_valid_mask(chip); /* * We accept no more calls into the driver from this point, so