From patchwork Sat Oct 31 03:10:53 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yue Haibing X-Patchwork-Id: 1391419 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=huawei.com Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4CNPMg3rtYz9sSC for ; Sat, 31 Oct 2020 14:11:11 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726239AbgJaDLI (ORCPT ); Fri, 30 Oct 2020 23:11:08 -0400 Received: from szxga05-in.huawei.com ([45.249.212.191]:7120 "EHLO szxga05-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725536AbgJaDLI (ORCPT ); Fri, 30 Oct 2020 23:11:08 -0400 Received: from DGGEMS412-HUB.china.huawei.com (unknown [172.30.72.58]) by szxga05-in.huawei.com (SkyGuard) with ESMTP id 4CNPMX5YHGzLrv5; Sat, 31 Oct 2020 11:11:04 +0800 (CST) Received: from localhost (10.174.176.180) by DGGEMS412-HUB.china.huawei.com (10.3.19.212) with Microsoft SMTP Server id 14.3.487.0; Sat, 31 Oct 2020 11:10:58 +0800 From: YueHaibing To: , , , , CC: , , YueHaibing Subject: [PATCH] sfp: Fix error handing in sfp_probe() Date: Sat, 31 Oct 2020 11:10:53 +0800 Message-ID: <20201031031053.25264-1-yuehaibing@huawei.com> X-Mailer: git-send-email 2.10.2.windows.1 MIME-Version: 1.0 X-Originating-IP: [10.174.176.180] X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org gpiod_to_irq() never return 0, but returns negative in case of error, check it and set gpio_irq to 0. Fixes: 73970055450e ("sfp: add SFP module support") Signed-off-by: YueHaibing Reviewed-by: Andrew Lunn --- drivers/net/phy/sfp.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/phy/sfp.c b/drivers/net/phy/sfp.c index 1d18c10e8f82..34aa196b7465 100644 --- a/drivers/net/phy/sfp.c +++ b/drivers/net/phy/sfp.c @@ -2389,7 +2389,8 @@ static int sfp_probe(struct platform_device *pdev) continue; sfp->gpio_irq[i] = gpiod_to_irq(sfp->gpio[i]); - if (!sfp->gpio_irq[i]) { + if (sfp->gpio_irq[i] < 0) { + sfp->gpio_irq[i] = 0; sfp->need_poll = true; continue; }