linux-kernel - [PATCH 3.4 13/31] usb: gadget: composite: reset delayed_status on reset

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Date:	Wed, 18 Dec 2013 13:08:21 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org,
	Michael Grzeschik <m.grzeschik@...gutronix.de>,
	Felipe Balbi <balbi@...com>
Subject: [PATCH 3.4 13/31] usb: gadget: composite: reset delayed_status on reset_config

3.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Michael Grzeschik <m.grzeschik@...gutronix.de>

commit 2bac51a1827a18821150ed8c9f9752c02f9c2b02 upstream.

The delayed_status value is used to keep track of status response
packets on ep0. It needs to be reset or the set_config function would
still delay the answer, if the usb device got unplugged while waiting
for setup_continue to be called.

Signed-off-by: Michael Grzeschik <m.grzeschik@...gutronix.de>
Signed-off-by: Felipe Balbi <balbi@...com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/usb/gadget/composite.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/usb/gadget/composite.c
+++ b/drivers/usb/gadget/composite.c
@@ -584,6 +584,7 @@ static void reset_config(struct usb_comp
 		bitmap_zero(f->endpoints, 32);
 	}
 	cdev->config = NULL;
+	cdev->delayed_status = 0;
 }
 
 static int set_config(struct usb_composite_dev *cdev,


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