releases/3.4.75/usb-gadget-composite-reset-delayed_status-on-reset_config.patch

   1 From 2bac51a1827a18821150ed8c9f9752c02f9c2b02 Mon Sep 17 00:00:00 2001
   2 From: Michael Grzeschik <m.grzeschik@pengutronix.de>
   3 Date: Mon, 11 Nov 2013 23:43:32 +0100
   4 Subject: usb: gadget: composite: reset delayed_status on reset_config
   5
   6 From: Michael Grzeschik <m.grzeschik@pengutronix.de>
   7
   8 commit 2bac51a1827a18821150ed8c9f9752c02f9c2b02 upstream.
   9
  10 The delayed_status value is used to keep track of status response
  11 packets on ep0. It needs to be reset or the set_config function would
  12 still delay the answer, if the usb device got unplugged while waiting
  13 for setup_continue to be called.
  14
  15 Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
  16 Signed-off-by: Felipe Balbi <balbi@ti.com>
  17 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  18
  19 ---
  20  drivers/usb/gadget/composite.c |    1 +
  21  1 file changed, 1 insertion(+)
  22
  23 --- a/drivers/usb/gadget/composite.c
  24 +++ b/drivers/usb/gadget/composite.c
  25 @@ -584,6 +584,7 @@ static void reset_config(struct usb_comp
  26                 bitmap_zero(f->endpoints, 32);
  27         }
  28         cdev->config = NULL;
  29 +       cdev->delayed_status = 0;
  30  }
  31
  32  static int set_config(struct usb_composite_dev *cdev,