From mboxrd@z Thu Jan 1 00:00:00 1970 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=-14.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,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 8D753C433E1 for ; Thu, 27 Aug 2020 18:26:22 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 600942087E for ; Thu, 27 Aug 2020 18:26:22 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="A3I3RWtS"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="IwTyGYXl" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 600942087E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:MIME-Version:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:In-Reply-To:References:List-Owner; bh=xCPsnUe2QoWwu4Ikfp7ATQcWHAxw5nX05ld/QeGrwyw=; b=A3I3RWtSQT5G6zE9Qs6OG+0Jq9 idd2xGWPKhCDR9JMQwwFrBX8RtjBzof+TIY1Y8WNghgOmUPkds53YZQEF8Bt+8Ob+0FPfdsAkPcjQ LnkOYyqx1v/7eJKyr6sxcPldB4Fm/6qBlhSyuc+DgfS0ebAhRCVM5qxMZWftZJal4F28N3MReX/rV Nukwd4x9uZkPSC5unxxiaSxrGXuqFxrajdVQdW7T5KmJz5QbpHzwWaOJ80AU8atzreuvIe8d94nU3 l82hXKWniP80uDauc1zpWkfA+B4ku5MA8DwSzClluBrsWEp04Ioq2fPICigp8e4gylY3hAL3naw8k mOf4c/7Q==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1kBMaM-00087N-4R; Thu, 27 Aug 2020 18:25:18 +0000 Received: from mail.kernel.org ([198.145.29.99]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kBMaI-00085p-GF; Thu, 27 Aug 2020 18:25:15 +0000 Received: from localhost.localdomain (unknown [194.230.155.216]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 834FE2087C; Thu, 27 Aug 2020 18:25:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1598552713; bh=Z0fq8dm88+dU9bSyD1/ti5vEZonGfauWaztGQMRRjv4=; h=From:To:Cc:Subject:Date:From; b=IwTyGYXlnbFOhjBVfmnr32F+ohdbcGf6mHx2E6En0fwR5qRBHq9yO91+/S6zv2h0w 4+NDrFOePMEVUsNYcT3MvpBJoxWD+XLp4nmvr2ulQcvggxIVrcUxRGGgOk39RdthS2 ksaZ/x2Y9mvHGkvPkj4TIMDEonMo0PEZr+dfXpt8= From: Krzysztof Kozlowski To: Jassi Brar , Matthias Brugger , CK Hu , HS Liao , Houlong Wei , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org Subject: [PATCH v3] mailbox: mediatek: Fix handling of platform_get_irq() error Date: Thu, 27 Aug 2020 20:25:07 +0200 Message-Id: <20200827182507.4938-1-krzk@kernel.org> X-Mailer: git-send-email 2.17.1 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200827_142514_604119_EBA40C9D X-CRM114-Status: GOOD ( 14.14 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Krzysztof Kozlowski , Frank Wunderlich MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org platform_get_irq() returns -ERRNO on error. In such case casting to u32 and comparing to 0 would pass the check. Fixes: 623a6143a845 ("mailbox: mediatek: Add Mediatek CMDQ driver") Signed-off-by: Krzysztof Kozlowski --- Changes since v2: 1. Fix subject. Changes since v1: 1. Correct u32->int, 2. Fix left-over '!'. --- drivers/mailbox/mtk-cmdq-mailbox.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/drivers/mailbox/mtk-cmdq-mailbox.c b/drivers/mailbox/mtk-cmdq-mailbox.c index 484d4438cd83..5665b6ea8119 100644 --- a/drivers/mailbox/mtk-cmdq-mailbox.c +++ b/drivers/mailbox/mtk-cmdq-mailbox.c @@ -69,7 +69,7 @@ struct cmdq_task { struct cmdq { struct mbox_controller mbox; void __iomem *base; - u32 irq; + int irq; u32 thread_nr; u32 irq_mask; struct cmdq_thread *thread; @@ -525,10 +525,8 @@ static int cmdq_probe(struct platform_device *pdev) } cmdq->irq = platform_get_irq(pdev, 0); - if (!cmdq->irq) { - dev_err(dev, "failed to get irq\n"); - return -EINVAL; - } + if (cmdq->irq < 0) + return cmdq->irq; plat_data = (struct gce_plat *)of_device_get_match_data(dev); if (!plat_data) { -- 2.17.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel