From patchwork Wed Jan 20 18:20:46 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: William Breathitt Gray X-Patchwork-Id: 570846 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id AB624140317 for ; Thu, 21 Jan 2016 05:20:55 +1100 (AEDT) Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b=th4oy/88; dkim-atps=neutral Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934687AbcATSUy (ORCPT ); Wed, 20 Jan 2016 13:20:54 -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 Received: by mail-yk0-f174.google.com with SMTP id k129so19700545yke.0; Wed, 20 Jan 2016 10:20:53 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=date:from:to:cc:subject:message-id:mime-version:content-type :content-disposition:user-agent; bh=iyebwzDJT4T1DipaZAs2q5slaArPXhAugnh8CtYFuSM=; b=th4oy/88d9AQVtyn8JFwtfg2inJM7zoowJqgySdoixSgj4vfiNPEdu94a+ePNvR7nA lnATsWe5gtBUF8AvxkacdxvsSwO6sMc/lyXFMOWJ8L72ITYIC3OjPdPiz0hiYDnjzLOA YtCrVScxXzZOrSGNTpdNx1ljTvqyINZxXZw6sZWxemQv9ISjx6zkX/3H4pe1Gmr6wC+h 30exk79RY5CRNH+zm1T5F8GMsK/cqdIvCPwxCnS8qiWoFeUBfoKb2IeXaYyVAD0ejC3C HZ3URuEHPhF5cv514vNbQbtwgTB+giT+7qd4xwuy0BllThccyTBkleY4N6ADyd6KR/Dj IcUQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:date:from:to:cc:subject:message-id:mime-version :content-type:content-disposition:user-agent; bh=iyebwzDJT4T1DipaZAs2q5slaArPXhAugnh8CtYFuSM=; b=VF8j0s303YylXEXj4uaC+ZvmzJ4Pe5n+kIOHEpVldeXO6MK8ya7lVBcWWevxhXmdi+ hkdkfoqvSa0beJc5SoFCy0zjorweaopLvg8GpOWXXJBJR572zcmoZdJTCJlL8YZ+IqVM KB6kcE1uZGoBrGYP1E8w+hYdcJvsuas1oNgjgObSLbeI0/Ir8/POn03ar6zcVbeQFkeZ Ln40DmVBIwUL8l6HEamiXmjNEzueZYf4vC2lwzpN9KdZvgANGG1nzphGM4FRLdvA1LpZ slhW3WGdWUZPKJPGutDaIkFsDS8PQ5MFkPL7tBMdpB8LtfAfliOVrUKEMN5ylvfBe7eo W2YQ== X-Gm-Message-State: AG10YOQUQCN1ZxshJB7oc96C9MsEVYiFVCy4bCp7piyATZP14PC8KozdcIzI7iIgfkDyHA== X-Received: by 10.129.153.12 with SMTP id q12mr17160916ywg.296.1453314052872; Wed, 20 Jan 2016 10:20:52 -0800 (PST) Received: from sophia (71-47-58-73.res.bhn.net. [71.47.58.73]) by smtp.gmail.com with ESMTPSA id x7sm26090616ywf.35.2016.01.20.10.20.52 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 20 Jan 2016 10:20:52 -0800 (PST) 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-Disposition: inline User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-gpio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-gpio@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));