From 3f886620742edd4e7e037d7d9349be69df0ce59b Mon Sep 17 00:00:00 2001
From: karl beldan <karl.beldan@gmail.com>
Date: Fri, 16 May 2008 11:30:22 +0200
Subject: [PATCH] USB: pxa27x_udc - Fix Oops

udc_disable oopses dereferencing udc_command.

Signed-off-by: Karl Beldan <karl.beldan@gmail.com>
Acked-by: Robert Jarzmik <rjarzmik@free.fr>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/usb/gadget/pxa27x_udc.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/gadget/pxa27x_udc.c b/drivers/usb/gadget/pxa27x_udc.c
index 499b7a23f351..e02bfd4df3a6 100644
--- a/drivers/usb/gadget/pxa27x_udc.c
+++ b/drivers/usb/gadget/pxa27x_udc.c
@@ -1526,7 +1526,8 @@ static void udc_disable(struct pxa_udc *udc)
 
 	ep0_idle(udc);
 	udc->gadget.speed = USB_SPEED_UNKNOWN;
-	udc->mach->udc_command(PXA2XX_UDC_CMD_DISCONNECT);
+	if (udc->mach->udc_command)
+		udc->mach->udc_command(PXA2XX_UDC_CMD_DISCONNECT);
 }
 
 /**
-- 
2.20.1