Patch "usb: chipidea: otg: gadget module load and unload support" has been added to the 4.3-stable tree

This is a note to let you know that I've just added the patch titled

usb: chipidea: otg: gadget module load and unload support

to the 4.3-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
usb-chipidea-otg-gadget-module-load-and-unload-support.patch
and it can be found in the queue-4.3 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Li Jun <[email protected]>
Date: Fri, 12 Dec 2014 09:11:42 +0800
Subject: usb: chipidea: otg: gadget module load and unload support

From: Li Jun <[email protected]>

commit 85da852df66e5e0d3aba761b0fece7c958ff0685 upstream.

This patch is to support load and unload gadget driver in full OTG mode.

---
 drivers/usb/chipidea/udc.c |   17 +++++++++++++++++
 1 file changed, 17 insertions(+)

@@ -1751,6 +1751,22 @@ static int ci_udc_start(struct usb_gadge
 	return retval;
 }
 
+static void ci_udc_stop_for_otg_fsm(struct ci_hdrc *ci)
+{
+	if (!ci_otg_is_fsm_mode(ci))
+		return;
+
+	mutex_lock(&ci->fsm.lock);
+	if (ci->fsm.otg->state == OTG_STATE_A_PERIPHERAL) {
+		ci->fsm.a_bidl_adis_tmout = 1;
+		ci_hdrc_otg_fsm_start(ci);
+	} else if (ci->fsm.otg->state == OTG_STATE_B_PERIPHERAL) {
+		ci->fsm.protocol = PROTO_UNDEF;
+		ci->fsm.otg->state = OTG_STATE_UNDEFINED;
+	}
+	mutex_unlock(&ci->fsm.lock);
+}
+
 /**
  * ci_udc_stop: unregister a gadget driver
  */

@@ -1775,6 +1791,7 @@ static int ci_udc_stop(struct usb_gadget
 	ci->driver = NULL;
 	spin_unlock_irqrestore(&ci->lock, flags);
 
+	ci_udc_stop_for_otg_fsm(ci);
 	return 0;
 }
 

Patches currently in stable-queue which might be from [email protected] are

queue-4.3/usb-chipidea-otg-gadget-module-load-and-unload-support.patch