From patchwork Tue Oct 27 13:54:05 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 312957 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 58EB1C388F9 for ; Tue, 27 Oct 2020 14:24:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 21D27207BB for ; Tue, 27 Oct 2020 14:24:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1603808697; bh=hR6U4WnyyHaew0oR5qjCvxwyrsc/wpr+fungtJa7tUA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=QHjneVTN8AZbb8OTz3KbJZcJERDrxrakl/Re8MOF5YJLlcy2fQ5Jov7Wax6WcYjet qgU0FuPMe8cJdksTF7wbcMjUfzUQa+9yMF/d140ZaqX61EPVaQUJ2/yxGxxv59Acy0 dmhgLhPa51ieUVwdSfAQtz2xWPtsNOeqMbUETJPY= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2895579AbgJ0OYz (ORCPT ); Tue, 27 Oct 2020 10:24:55 -0400 Received: from mail.kernel.org ([198.145.29.99]:50138 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S368164AbgJ0OYt (ORCPT ); Tue, 27 Oct 2020 10:24:49 -0400 Received: from localhost (83-86-74-64.cable.dynamic.v4.ziggo.nl [83.86.74.64]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 6D07820773; Tue, 27 Oct 2020 14:24:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1603808689; bh=hR6U4WnyyHaew0oR5qjCvxwyrsc/wpr+fungtJa7tUA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=RCAjaFJYrAfKCGyrrJRM2XHlmLpKtv2DZvpacrQN9gG/7uYCTTZQCy3k7CLNNQCCG DQz0zosC7e+y4zBbHfTpy7lM6jfAsyKUXBUM2qPjyu3otO4glUK+iU7up+ztgsdgcw watjiUSrzOiQq6a2ytksM7REWiVIPF9hzcWtyn4g= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Krzysztof Kozlowski , Chen-Yu Tsai , Dmitry Torokhov , Sasha Levin Subject: [PATCH 4.19 187/264] Input: sun4i-ps2 - fix handling of platform_get_irq() error Date: Tue, 27 Oct 2020 14:54:05 +0100 Message-Id: <20201027135439.438998576@linuxfoundation.org> X-Mailer: git-send-email 2.29.1 In-Reply-To: <20201027135430.632029009@linuxfoundation.org> References: <20201027135430.632029009@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Krzysztof Kozlowski [ Upstream commit cafb3abea6136e59ea534004e5773361e196bb94 ] platform_get_irq() returns -ERRNO on error. In such case comparison to 0 would pass the check. Fixes: e443631d20f5 ("Input: serio - add support for Alwinner A10/A20 PS/2 controller") Signed-off-by: Krzysztof Kozlowski Acked-by: Chen-Yu Tsai Link: https://lore.kernel.org/r/20200828145744.3636-4-krzk@kernel.org Signed-off-by: Dmitry Torokhov Signed-off-by: Sasha Levin --- drivers/input/serio/sun4i-ps2.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) diff --git a/drivers/input/serio/sun4i-ps2.c b/drivers/input/serio/sun4i-ps2.c index 04b96fe393397..46512b4d686a8 100644 --- a/drivers/input/serio/sun4i-ps2.c +++ b/drivers/input/serio/sun4i-ps2.c @@ -210,7 +210,6 @@ static int sun4i_ps2_probe(struct platform_device *pdev) struct sun4i_ps2data *drvdata; struct serio *serio; struct device *dev = &pdev->dev; - unsigned int irq; int error; drvdata = kzalloc(sizeof(struct sun4i_ps2data), GFP_KERNEL); @@ -263,14 +262,12 @@ static int sun4i_ps2_probe(struct platform_device *pdev) writel(0, drvdata->reg_base + PS2_REG_GCTL); /* Get IRQ for the device */ - irq = platform_get_irq(pdev, 0); - if (!irq) { - dev_err(dev, "no IRQ found\n"); - error = -ENXIO; + drvdata->irq = platform_get_irq(pdev, 0); + if (drvdata->irq < 0) { + error = drvdata->irq; goto err_disable_clk; } - drvdata->irq = irq; drvdata->serio = serio; drvdata->dev = dev;