linux-kernel - [PATCH] usb: gadget: udc_core: Use right kobj when calling sysfs

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Date:	Mon, 15 Sep 2014 12:42:27 +0200
From:	Andreas Larsson <andreas@...sler.com>
To:	Felipe Balbi <balbi@...com>
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
	software@...sler.com
Subject: [PATCH] usb: gadget: udc_core: Use right kobj when calling sysfs_notify

The state attribute is connected to the kobj of the udc, not the gadget.

Signed-off-by: Andreas Larsson <andreas@...sler.com>
---
 drivers/usb/gadget/udc/udc-core.c |   14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/gadget/udc/udc-core.c b/drivers/usb/gadget/udc/udc-core.c
index b0d9817..37c129a 100644
--- a/drivers/usb/gadget/udc/udc-core.c
+++ b/drivers/usb/gadget/udc/udc-core.c
@@ -109,8 +109,20 @@ EXPORT_SYMBOL_GPL(usb_gadget_unmap_request);
 static void usb_gadget_state_work(struct work_struct *work)
 {
 	struct usb_gadget	*gadget = work_to_gadget(work);
+	struct usb_udc		*udc = NULL;
+
+	mutex_lock(&udc_lock);
+	list_for_each_entry(udc, &udc_list, list)
+		if (udc->gadget == gadget)
+			goto found;
+	mutex_unlock(&udc_lock);
+
+	return;
+
+found:
+	mutex_unlock(&udc_lock);
 
-	sysfs_notify(&gadget->dev.kobj, NULL, "state");
+	sysfs_notify(&udc->dev.kobj, NULL, "state");
 }
 
 void usb_gadget_set_state(struct usb_gadget *gadget,
-- 
1.7.10.4

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