From patchwork Mon Jan 24 18:45:05 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 535673 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1FAE2C433F5 for ; Mon, 24 Jan 2022 20:57:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344549AbiAXUwv (ORCPT ); Mon, 24 Jan 2022 15:52:51 -0500 Received: from dfw.source.kernel.org ([139.178.84.217]:43504 "EHLO dfw.source.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1388886AbiAXUtq (ORCPT ); Mon, 24 Jan 2022 15:49:46 -0500 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 5BC6C60B21; Mon, 24 Jan 2022 20:49:46 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 30ACEC340E5; Mon, 24 Jan 2022 20:49:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1643057385; bh=RU9LPponh3x6LDCbLu8EQDIpjKNBT5b5AgJqXCNloFs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=cTi422rImM40VF3RVaIvuPZltCKeHczfnGOeT6ZNKHMiVtesXckFXgFtkFreK7YAa IFlpAwLBWC2BOIsk1eQ0xjBwDb3ZFPfrNFSVSQ62h0rn71XkoPWgiLLj9nARTEytND eENnpEgY1zgJQkrH5ogV3XtZkUwaaPXmdSCOARIo= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Miaoqian Lin , Linus Walleij , Bartosz Golaszewski Subject: [PATCH 5.15 788/846] gpio: mpc8xxx: Fix IRQ check in mpc8xxx_probe Date: Mon, 24 Jan 2022 19:45:05 +0100 Message-Id: <20220124184128.143034873@linuxfoundation.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220124184100.867127425@linuxfoundation.org> References: <20220124184100.867127425@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Miaoqian Lin commit 0b39536cc699db6850c426db7f9cb45923de40c5 upstream. platform_get_irq() returns negative error number instead 0 on failure. And the doc of platform_get_irq() provides a usage example: int irq = platform_get_irq(pdev, 0); if (irq < 0) return irq; Fix the check of return value to catch errors correctly. Fixes: 76c47d1449fc ("gpio: mpc8xxx: Add ACPI support") Signed-off-by: Miaoqian Lin Reviewed-by: Linus Walleij Signed-off-by: Bartosz Golaszewski Signed-off-by: Greg Kroah-Hartman --- drivers/gpio/gpio-mpc8xxx.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/drivers/gpio/gpio-mpc8xxx.c +++ b/drivers/gpio/gpio-mpc8xxx.c @@ -388,8 +388,8 @@ static int mpc8xxx_probe(struct platform } mpc8xxx_gc->irqn = platform_get_irq(pdev, 0); - if (!mpc8xxx_gc->irqn) - return 0; + if (mpc8xxx_gc->irqn < 0) + return mpc8xxx_gc->irqn; mpc8xxx_gc->irq = irq_domain_create_linear(fwnode, MPC8XXX_GPIO_PINS,