From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Ivan T. Ivanov" Subject: [PATCH v2] usb: phy: msm: Unregister VBUS and ID events notifiers Date: Mon, 7 Sep 2015 11:07:09 +0300 Message-ID: <1441613229-13867-1-git-send-email-ivan.ivanov@linaro.org> Return-path: Received: from mail-wi0-f172.google.com ([209.85.212.172]:38432 "EHLO mail-wi0-f172.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751265AbbIGIHS (ORCPT ); Mon, 7 Sep 2015 04:07:18 -0400 Received: by wiclk2 with SMTP id lk2so74744438wic.1 for ; Mon, 07 Sep 2015 01:07:16 -0700 (PDT) Sender: linux-arm-msm-owner@vger.kernel.org List-Id: linux-arm-msm@vger.kernel.org To: Felipe Balbi , Tim Bird Cc: Greg Kroah-Hartman , linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org Right now even if driver failed to probe extcon framework will still deliver its VBUS and ID events, which will lead to random exception codes. Fix this by removing VBUS and ID events notifiers when probe fail. Fixes: 591fc116f330 ("usb: phy: msm: Use extcon framework for VBUS and ID detection") Reported-by: Tim Bird Signed-off-by: Ivan T. Ivanov --- Patch reworked to use new extcon API. drivers/usb/phy/phy-msm-usb.c | 25 ++++++++++++++++--------- 1 file changed, 16 insertions(+), 9 deletions(-) diff --git a/drivers/usb/phy/phy-msm-usb.c b/drivers/usb/phy/phy-msm-usb.c index c58c3c0dbe35..0fd21c147c7e 100644 --- a/drivers/usb/phy/phy-msm-usb.c +++ b/drivers/usb/phy/phy-msm-usb.c @@ -1598,6 +1598,8 @@ static int msm_otg_read_dt(struct platform_device *pdev, struct msm_otg *motg) ret = extcon_register_notifier(ext_id, EXTCON_USB_HOST, &motg->id.nb); if (ret < 0) { + extcon_unregister_notifier(motg->vbus.extcon, + EXTCON_USB, &motg->vbus.nb); dev_err(&pdev->dev, "register ID notifier failed\n"); return ret; } @@ -1660,15 +1662,6 @@ static int msm_otg_probe(struct platform_device *pdev) if (!motg) return -ENOMEM; - pdata = dev_get_platdata(&pdev->dev); - if (!pdata) { - if (!np) - return -ENXIO; - ret = msm_otg_read_dt(pdev, motg); - if (ret) - return ret; - } - motg->phy.otg = devm_kzalloc(&pdev->dev, sizeof(struct usb_otg), GFP_KERNEL); if (!motg->phy.otg) @@ -1731,6 +1724,15 @@ static int msm_otg_probe(struct platform_device *pdev) return motg->irq; } + pdata = dev_get_platdata(&pdev->dev); + if (!pdata) { + if (!np) + return -ENXIO; + ret = msm_otg_read_dt(pdev, motg); + if (ret) + return ret; + } + regs[0].supply = "vddcx"; regs[1].supply = "v3p3"; regs[2].supply = "v1p8"; @@ -1834,6 +1836,11 @@ disable_clks: clk_disable_unprepare(motg->clk); if (!IS_ERR(motg->core_clk)) clk_disable_unprepare(motg->core_clk); + + extcon_unregister_notifier(motg->id.extcon, + EXTCON_USB_HOST, &motg->id.nb); + extcon_unregister_notifier(motg->vbus.extcon, + EXTCON_USB, &motg->vbus.nb); return ret; } -- 1.9.1