From bfb7fb79e913f60330037d1f302efee28d5f6770 Mon Sep 17 00:00:00 2001 From: Wojtek Kaniewski Date: Fri, 8 Dec 2006 03:26:00 -0800 Subject: USB: at91_udc: Additional checks 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(-) (limited to 'drivers/usb/gadget/at91_udc.c') diff --git a/drivers/usb/gadget/at91_udc.c b/drivers/usb/gadget/at91_udc.c index 1926d39e4801..812c733ba8ce 100644 --- a/drivers/usb/gadget/at91_udc.c +++ b/drivers/usb/gadget/at91_udc.c @@ -955,7 +955,10 @@ static int at91_vbus_session(struct usb_gadget *gadget, int is_active) // 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 *udc, struct at91_ep *ep, u32 csr) #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", -- cgit v1.2.3