From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753768AbdK1P7p (ORCPT ); Tue, 28 Nov 2017 10:59:45 -0500 Received: from mail-pl0-f66.google.com ([209.85.160.66]:40035 "EHLO mail-pl0-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752380AbdK1P7n (ORCPT ); Tue, 28 Nov 2017 10:59:43 -0500 X-Google-Smtp-Source: AGs4zMbg6gzPnW3I8xRb7lC38PJnTf29Oish9P1cZAoJSb/XOSqdy9kZBSYCbfQZakd/g7jlphmtXw== Subject: Re: [PATCH 01/10 v5] Input: ep93xx_keypad: Fix platform_get_irq's error checking To: dmitry.torokhov@gmail.com, maxime.ripard@free-electrons.com, wens@csie.org, mcuos.com@gmail.com, linux@roeck-us.net, linux@armlinux.org.uk, lee.jones@linaro.org References: <49ba0386f1930f58edfd5ee0f5e65d2a02a46744.1511280261.git.arvind.yadav.cs@gmail.com> Cc: linux-kernel@vger.kernel.org, linux-input@vger.kernel.org, linux-arm-kernel@lists.infradead.org From: arvindY Message-ID: <5A1D87E8.3020801@gmail.com> Date: Tue, 28 Nov 2017 21:29:36 +0530 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.6.0 MIME-Version: 1.0 In-Reply-To: <49ba0386f1930f58edfd5ee0f5e65d2a02a46744.1511280261.git.arvind.yadav.cs@gmail.com> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Dmitry, Sorry for troubling you. I need to push others also. Please share your review comment. Thanks, On Tuesday 21 November 2017 09:41 PM, Arvind Yadav wrote: > The platform_get_irq() function returns negative if an error occurs. > zero or positive number on success. platform_get_irq() error checking > for zero is not correct. > > Signed-off-by: Arvind Yadav > --- > changes in v2 : > Return keypad->irq insted of -ENXIO. > changes in v3 : > Add failure case '<= 0' instead of '< 0'. IRQ0 is not valid. > changes in v4 : > Return -ENXIO insted of keypad->irq. Which was not correct in v3. > changes in v5 : > Remove changes of v3 and v4. go back to version v2. Which is correct. > No need to check for IRQ0 and return keypad->irq insted of -ENXIO. > > drivers/input/keyboard/ep93xx_keypad.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/drivers/input/keyboard/ep93xx_keypad.c b/drivers/input/keyboard/ep93xx_keypad.c > index f77b295..01788a7 100644 > --- a/drivers/input/keyboard/ep93xx_keypad.c > +++ b/drivers/input/keyboard/ep93xx_keypad.c > @@ -257,8 +257,8 @@ static int ep93xx_keypad_probe(struct platform_device *pdev) > } > > keypad->irq = platform_get_irq(pdev, 0); > - if (!keypad->irq) { > - err = -ENXIO; > + if (keypad->irq < 0) { > + err = keypad->irq; > goto failed_free; > } >