From david-b@pacbell.net Fri Dec 8 12:50:41 2006 From: Wojtek Kaniewski Date: Friday 08 December 2006 3:26 am Subject: USB: at91_udc: Additional checks To: linux-usb-devel@lists.sourceforge.net Cc: andrew@sanpeople.com Message-Id: <200612080942.19025.david-b@pacbell.net> This patch performs additional checks in at91_udc, just in case of some spurious interrupts or device enumeration. Signed-off-by: Wojtek Kaniewski Acked-by: David Brownell Cc: Andrew Victor Signed-off-by: Greg Kroah-Hartman --- drivers/usb/gadget/at91_udc.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) --- gregkh-2.6.orig/drivers/usb/gadget/at91_udc.c +++ gregkh-2.6/drivers/usb/gadget/at91_udc.c @@ -955,7 +955,10 @@ 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; } @@ -1241,7 +1244,10 @@ 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",