This patch performs additional checks in at91_udc, just in case of
some spurious interrupts or device enumeration.
Signed-off-by: Wojtek Kaniewski <[EMAIL PROTECTED]>
Cc: Andrew Victor <[EMAIL PROTECTED]>
--- linux-2.6.19.orig/drivers/usb/gadget/at91_udc.c 2006-12-08
09:36:02.000000000 +0100
+++ linux-2.6.19/drivers/usb/gadget/at91_udc.c 2006-12-08 11:35:17.000000000
+0100
@@ -936,7 +936,10 @@ static int at91_vbus_session(struct usb_
// VDBG("vbus %s\n", is_active ? "on" : "off");
local_irq_save(flags);
udc->vbus = (is_active != 0);
- pullup(udc, is_active);
+ if (udc->driver)
+ pullup(udc, is_active);
+ else
+ pullup(udc, 0);
local_irq_restore(flags);
return 0;
}
@@ -1222,7 +1225,10 @@ static void handle_setup(struct at91_udc
#undef w_length
/* pass request up to the gadget driver */
- status = udc->driver->setup(&udc->gadget, &pkt.r);
+ if (udc->driver)
+ status = udc->driver->setup(&udc->gadget, &pkt.r);
+ else
+ status = ENODEV;
if (status < 0) {
stall:
VDBG("req %02x.%02x protocol STALL; stat %d\n",
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