From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753698Ab2GWBn5 (ORCPT ); Sun, 22 Jul 2012 21:43:57 -0400 Received: from shadbolt.e.decadent.org.uk ([88.96.1.126]:54496 "EHLO shadbolt.e.decadent.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753628Ab2GWBns (ORCPT ); Sun, 22 Jul 2012 21:43:48 -0400 Message-Id: <20120723010655.616884499@decadent.org.uk> User-Agent: quilt/0.60-1 Date: Mon, 23 Jul 2012 02:07:18 +0100 From: Ben Hutchings To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: torvalds@linux-foundation.org, akpm@linux-foundation.org, alan@lxorguk.ukuu.org.uk, Mark Brown , Linus Walleij Subject: [ 027/108] gpiolib: wm8994: Pay attention to the value set when enabling as output In-Reply-To: <20120723010651.408577075@decadent.org.uk> X-SA-Exim-Connect-IP: 2001:470:1f08:1539:21c:bfff:fe03:f805 X-SA-Exim-Mail-From: ben@decadent.org.uk X-SA-Exim-Scanned: No (on shadbolt.decadent.org.uk); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.2-stable review patch. If anyone has any objections, please let me know. ------------------ From: Mark Brown commit 8cd578b6e28693f357867a77598a88ef3deb6b39 upstream. Not paying attention to the value being set is a bad thing because it means that we'll not set the hardware up to reflect what was requested. Not setting the hardware up to reflect what was requested means that the caller won't get the results they wanted. Signed-off-by: Mark Brown Signed-off-by: Linus Walleij Signed-off-by: Ben Hutchings --- drivers/gpio/gpio-wm8994.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/gpio/gpio-wm8994.c b/drivers/gpio/gpio-wm8994.c index 92ea535..aa61ad2 100644 --- a/drivers/gpio/gpio-wm8994.c +++ b/drivers/gpio/gpio-wm8994.c @@ -89,8 +89,11 @@ static int wm8994_gpio_direction_out(struct gpio_chip *chip, struct wm8994_gpio *wm8994_gpio = to_wm8994_gpio(chip); struct wm8994 *wm8994 = wm8994_gpio->wm8994; + if (value) + value = WM8994_GPN_LVL; + return wm8994_set_bits(wm8994, WM8994_GPIO_1 + offset, - WM8994_GPN_DIR, 0); + WM8994_GPN_DIR | WM8994_GPN_LVL, value); } static void wm8994_gpio_set(struct gpio_chip *chip, unsigned offset, int value)