From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934973AbcATSU4 (ORCPT ); Wed, 20 Jan 2016 13:20:56 -0500 Received: from mail-yk0-f174.google.com ([209.85.160.174]:32833 "EHLO mail-yk0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934679AbcATSUx (ORCPT ); Wed, 20 Jan 2016 13:20:53 -0500 Date: Wed, 20 Jan 2016 13:20:46 -0500 From: William Breathitt Gray To: linus.walleij@linaro.org, gnurou@gmail.com Cc: linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH] gpio: 104-idio-16: Return IRQ_NONE if all relevant GPIO lines are masked Message-ID: <20160120182046.GA25463@sophia> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org If the irq_mask member has a value of 0, then interrupts are disabled on the device. Therefore, IRQ_NONE should be returned if the irq_mask member is 0. Signed-off-by: William Breathitt Gray --- drivers/gpio/gpio-104-idio-16.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpio/gpio-104-idio-16.c b/drivers/gpio/gpio-104-idio-16.c index 4d69b50..09fe032 100644 --- a/drivers/gpio/gpio-104-idio-16.c +++ b/drivers/gpio/gpio-104-idio-16.c @@ -175,6 +175,9 @@ static irqreturn_t idio_16_irq_handler(int irq, void *dev_id) struct gpio_chip *const chip = &idio16gpio->chip; int gpio; + if (!idio16gpio->irq_mask) + return IRQ_NONE; + for_each_set_bit(gpio, &idio16gpio->irq_mask, chip->ngpio) generic_handle_irq(irq_find_mapping(chip->irqdomain, gpio)); -- 2.4.10