usb: xhci: fix return value of xhci_setup_device()
authorLu Baolu <baolu.lu@linux.intel.com>
Tue, 3 Jan 2017 16:28:44 +0000 (18:28 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 12 Jan 2017 10:22:45 +0000 (11:22 +0100)
commit3447b37729341141c5e05a879d4caefccf81a3af
treec8e9ae275c7469d6574ed7906db66bd1da75bc90
parent2d1b4fcba4a76f5175ae51d9902caf7f8585072e
usb: xhci: fix return value of xhci_setup_device()

commit 90797aee5d6902b49a453c97d83c326408aeb5a8 upstream.

xhci_setup_device() should return failure with correct error number
when xhci host has died, removed or halted.

During usb device enumeration, if usb host is not accessible (died,
removed or halted), the hc_driver->address_device() should return
a corresponding error code to usb core. But current xhci driver just
returns success. This misleads usb core to continue the enumeration
by reading the device descriptor, which will result in failure, and
users will get a misleading message like "device descriptor read/8,
error -110".

Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/usb/host/xhci.c