Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752240AbaBLKPL (ORCPT ); Wed, 12 Feb 2014 05:15:11 -0500 Received: from mail-wi0-f182.google.com ([209.85.212.182]:49251 "EHLO mail-wi0-f182.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752221AbaBLKKG (ORCPT ); Wed, 12 Feb 2014 05:10:06 -0500 From: Jean-Jacques Hiblot To: nicolas.ferre@atmel.com, plagnioj@jcrosoft.com, b.brezillon@overkiz.com Cc: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, gregory.clement@free-electrons.com, Jean-Jacques Hiblot Subject: [PATCH v4 2/8] at91: pinctrl: don't request GPIOs used for interrupts but lock them as IRQ Date: Wed, 12 Feb 2014 11:06:41 +0100 Message-Id: <1392199607-27452-3-git-send-email-jjhiblot@traphandler.com> X-Mailer: git-send-email 1.8.5.3 In-Reply-To: <1392199607-27452-1-git-send-email-jjhiblot@traphandler.com> References: <1392199607-27452-1-git-send-email-jjhiblot@traphandler.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org During the xlate stage of the DT interrupt parsing, the at91 pinctrl driver requests the GPIOs that are described as interrupt sources. This prevents a driver to request the gpio later to get its electrical value. This patch replaces the gpio_request with a gpio_lock_as_irq to prevent the gpio to be set as an ouput while allowing a subsequent gpio_request to succeed Signed-off-by: Jean-Jacques Hiblot --- drivers/pinctrl/pinctrl-at91.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/pinctrl/pinctrl-at91.c b/drivers/pinctrl/pinctrl-at91.c index d990e33..db55b96 100644 --- a/drivers/pinctrl/pinctrl-at91.c +++ b/drivers/pinctrl/pinctrl-at91.c @@ -1478,18 +1478,17 @@ static int at91_gpio_irq_domain_xlate(struct irq_domain *d, { struct at91_gpio_chip *at91_gpio = d->host_data; int ret; - int pin = at91_gpio->chip.base + intspec[0]; if (WARN_ON(intsize < 2)) return -EINVAL; *out_hwirq = intspec[0]; *out_type = intspec[1] & IRQ_TYPE_SENSE_MASK; - ret = gpio_request(pin, ctrlr->full_name); + ret = gpio_lock_as_irq(&at91_gpio->chip, intspec[0]); if (ret) return ret; - ret = gpio_direction_input(pin); + ret = at91_gpio_direction_input(&at91_gpio->chip, intspec[0]); if (ret) return ret; -- 1.8.5.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/