Messages in this thread Patch in this message | | | From | Roger Quadros <> | Subject | [PATCH 3/5] usb: xhci: Allow usb_add/remove_hcd() to be called repeatedly | Date | Thu, 2 Apr 2015 15:23:27 +0300 |
| |
Don't set xhci->shared_hcd to NULL in xhci_stop() as we have still not de-allocated it. It was resulting in a NULL pointer de-reference if usb_add/remove_hcd() is called repeatedly.
We want repeated add/remove to work for the OTG use case.
Signed-off-by: Roger Quadros <rogerq@ti.com> --- drivers/usb/host/xhci.c | 6 ------ 1 file changed, 6 deletions(-)
diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index 01118f7..8a7e319 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -660,12 +660,6 @@ static void xhci_only_stop_hcd(struct usb_hcd *hcd) spin_lock_irq(&xhci->lock); xhci_halt(xhci); - - /* The shared_hcd is going to be deallocated shortly (the USB core only - * calls this function when allocation fails in usb_add_hcd(), or - * usb_remove_hcd() is called). So we need to unset xHCI's pointer. - */ - xhci->shared_hcd = NULL; spin_unlock_irq(&xhci->lock); } -- 2.1.0
| |