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>
mariux64 · May 20, 2008 · 3f88662 · 3f88662
1 parent 1b2d23d
commit 3f88662
Showing 1 changed file with 2 additions and 1 deletion.
diff --git 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);
 }
 
 /**