From patchwork Mon May 16 19:36:41 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 573858 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 228C4C433EF for ; Mon, 16 May 2022 19:43:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345901AbiEPTni (ORCPT ); Mon, 16 May 2022 15:43:38 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44908 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1346151AbiEPTmw (ORCPT ); Mon, 16 May 2022 15:42:52 -0400 Received: from sin.source.kernel.org (sin.source.kernel.org [IPv6:2604:1380:40e1:4800::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7A33C3F8B2; Mon, 16 May 2022 12:41:59 -0700 (PDT) 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 sin.source.kernel.org (Postfix) with ESMTPS id F16DBCE1795; Mon, 16 May 2022 19:41:57 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0A642C385AA; Mon, 16 May 2022 19:41:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1652730116; bh=Dd5bm4NtHHEFcaFf5w6xNS60nrturXKLQxOMwNfw/2U=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=l6hXsEk84R2jlOTtRICZ1YULgdZzunQFe2P8/oTD9ZtTpru0Z42XsSQz+UN6kii1T qvUlnLcfABN83B7USRoK4breyxYck1E+EHfhfBdkVQgwj/501VfjFjNHaAAGrUjGG2 xRgCFnNAYHjOBMRibsqB3NaMCBvEy8PMs2phtRpw= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Miaoqian Lin , Srinivas Kandagatla Subject: [PATCH 4.19 27/32] slimbus: qcom: Fix IRQ check in qcom_slim_probe Date: Mon, 16 May 2022 21:36:41 +0200 Message-Id: <20220516193615.578081188@linuxfoundation.org> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220516193614.773450018@linuxfoundation.org> References: <20220516193614.773450018@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 fe503887eed6ea528e144ec8dacfa1d47aa701ac upstream. platform_get_irq() returns non-zero IRQ number on success, negative error number 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: ad7fcbc308b0 ("slimbus: qcom: Add Qualcomm Slimbus controller driver") Cc: stable@vger.kernel.org Signed-off-by: Miaoqian Lin Signed-off-by: Srinivas Kandagatla Link: https://lore.kernel.org/r/20220429164917.5202-2-srinivas.kandagatla@linaro.org Signed-off-by: Greg Kroah-Hartman --- drivers/slimbus/qcom-ctrl.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/drivers/slimbus/qcom-ctrl.c +++ b/drivers/slimbus/qcom-ctrl.c @@ -515,9 +515,9 @@ static int qcom_slim_probe(struct platfo } ctrl->irq = platform_get_irq(pdev, 0); - if (!ctrl->irq) { + if (ctrl->irq < 0) { dev_err(&pdev->dev, "no slimbus IRQ\n"); - return -ENODEV; + return ctrl->irq; } sctrl = &ctrl->ctrl;