From patchwork Mon May 16 19:37:01 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 573701 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 B806CC4321E for ; Mon, 16 May 2022 20:13:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346316AbiEPULW (ORCPT ); Mon, 16 May 2022 16:11:22 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56594 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1351119AbiEPUCC (ORCPT ); Mon, 16 May 2022 16:02:02 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2642E13C; Mon, 16 May 2022 12:59:08 -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 ams.source.kernel.org (Postfix) with ESMTPS id C59A9B81611; Mon, 16 May 2022 19:59:06 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 14E9FC385AA; Mon, 16 May 2022 19:59:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1652731145; bh=VMbYmNs67UPfayg47OoF8phgYXKB0mbdTrEmCm1IkK8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=eVoykfajD2VdoodD4DFRIjJmpEeSgyA8Xx7naHAq2faVx05RAJ2AnNEeH1f3WHsUZ 2aBf6tJt490tl2t8TnYovg4OOMfd+XhhM/qKCki5QSuMum3KkR7CwmBIvlW2V1gtMB ZbjnlOf/oZ4JxpH3U2ezqpstCXFhrCP5o7jB6Jd8= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Miaoqian Lin , Srinivas Kandagatla Subject: [PATCH 5.17 087/114] slimbus: qcom: Fix IRQ check in qcom_slim_probe Date: Mon, 16 May 2022 21:37:01 +0200 Message-Id: <20220516193627.977914165@linuxfoundation.org> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220516193625.489108457@linuxfoundation.org> References: <20220516193625.489108457@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 @@ -510,9 +510,9 @@ 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;