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Ip=[192.88.168.50]; Helo=[tx30smr01.am.freescale.net] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5SPR00MB108 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org The static variable dev_id always plus one before netdev registerred. It should restore the dev_id value in the cases of probe error. Signed-off-by: Fugang Duan --- drivers/net/ethernet/freescale/fec_main.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c index e17d10b..dae89bc 100644 --- a/drivers/net/ethernet/freescale/fec_main.c +++ b/drivers/net/ethernet/freescale/fec_main.c @@ -3576,6 +3576,7 @@ static int fec_enet_get_irq_cnt(struct platform_device *pdev) of_node_put(phy_node); failed_ioremap: free_netdev(ndev); + dev_id--; return ret; } From patchwork Wed Jan 3 02:39:30 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Duan X-Patchwork-Id: 854847 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; 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Wed, 3 Jan 2018 02:43:24 +0000 Authentication-Results: spf=fail (sender IP is 192.88.168.50) smtp.mailfrom=nxp.com; nxp.com; dkim=none (message not signed) header.d=none;nxp.com; dmarc=fail action=none header.from=nxp.com; Received-SPF: Fail (protection.outlook.com: domain of nxp.com does not designate 192.88.168.50 as permitted sender) receiver=protection.outlook.com; client-ip=192.88.168.50; helo=tx30smr01.am.freescale.net; Received: from tx30smr01.am.freescale.net (192.88.168.50) by BY2FFO11FD041.mail.protection.outlook.com (10.1.14.226) with Microsoft SMTP Server (version=TLS1_0, cipher=TLS_RSA_WITH_AES_256_CBC_SHA) id 15.20.345.12 via Frontend Transport; Wed, 3 Jan 2018 02:42:59 +0000 Received: from b54642-OptiPlex-3020.ap.freescale.net (b54642-OptiPlex-3020.ap.freescale.net [10.192.242.250]) by tx30smr01.am.freescale.net (8.14.3/8.14.0) with ESMTP id w032hDdC029966; Tue, 2 Jan 2018 19:43:22 -0700 From: Fugang Duan To: , CC: , , , Subject: [PATCH v2 net, stable 2/2] net: fec: defer probe if regulator is not ready Date: Wed, 3 Jan 2018 10:39:30 +0800 Message-ID: <1514947170-8887-3-git-send-email-fugang.duan@nxp.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1514947170-8887-1-git-send-email-fugang.duan@nxp.com> References: <1514947170-8887-1-git-send-email-fugang.duan@nxp.com> X-EOPAttributedMessage: 0 X-Matching-Connectors: 131594209799906057; 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Ip=[192.88.168.50]; Helo=[tx30smr01.am.freescale.net] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CO2PR03MB2358 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Defer probe if regulator is not ready. E.g. some regulator is fixed regulator controlled by i2c expander gpio, the i2c device may be probed after the driver, then it should handle the case of defer probe error. Signed-off-by: Fugang Duan --- drivers/net/ethernet/freescale/fec_main.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c index dae89bc..feed383 100644 --- a/drivers/net/ethernet/freescale/fec_main.c +++ b/drivers/net/ethernet/freescale/fec_main.c @@ -3489,6 +3489,10 @@ static int fec_enet_get_irq_cnt(struct platform_device *pdev) goto failed_regulator; } } else { + if (PTR_ERR(fep->reg_phy) == -EPROBE_DEFER) { + ret = -EPROBE_DEFER; + goto failed_regulator; + } fep->reg_phy = NULL; }