linux-kernel - [PATCH/RFT 05/12] USB: ohci-da8xx: Fix probe for devices with no vbus/oci gpio

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Date:   Fri,  7 Oct 2016 18:42:50 +0200
From:   ahaslam@...libre.com
To:     gregkh@...uxfoundation.org, robh+dt@...nel.org, nsekhar@...com,
        stern@...land.harvard.edu, khilman@...libre.com,
        sshtylyov@...mvista.com, david@...hnology.com
Cc:     linux-usb@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        Axel Haslam <ahaslam@...libre.com>
Subject: [PATCH/RFT 05/12] USB: ohci-da8xx: Fix probe for devices with no vbus/oci gpio

From: Axel Haslam <ahaslam@...libre.com>

Some boards dont have gpios assigened for vbus or oci.

Allow these boards to enumerate usb without declaring the set_power
and/or the ocic_notify callbacks in platform data.

Signed-off-by: Axel Haslam <ahaslam@...libre.com>
---
 drivers/usb/host/ohci-da8xx.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/usb/host/ohci-da8xx.c b/drivers/usb/host/ohci-da8xx.c
index 3c85d6c..9d9f8e3 100644
--- a/drivers/usb/host/ohci-da8xx.c
+++ b/drivers/usb/host/ohci-da8xx.c
@@ -215,7 +215,7 @@ static int ohci_da8xx_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
 				temp ? "Set" : "Clear", wIndex, "POWER");
 
 			if (!pdata->set_power)
-				return -EPIPE;
+				return 0;
 
 			return pdata->set_power(wIndex, temp) ? -EPIPE : 0;
 		case USB_PORT_FEAT_C_OVER_CURRENT:
@@ -343,10 +343,12 @@ static int usb_hcd_da8xx_probe(const struct hc_driver *driver,
 
 	if (pdata->ocic_notify) {
 		error = pdata->ocic_notify(ohci_da8xx_ocic_handler);
-		if (!error)
-			return 0;
+		if (error)
+			goto err_notify;
 	}
 
+	return 0;
+err_notify:
 	usb_remove_hcd(hcd);
 err:
 	usb_put_hcd(hcd);
-- 
2.7.1