USB: EHCI: store reason for unlinking a QH

This patch replaces the "exception" bitflag in the ehci_qh structure
with a more explicit "unlink_reason" bitmask.  This is for use in the
following patch, where we will need to have a good idea of the
reason for unlinking a QH, not just "something exceptional happened".

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Tested-by: Michael Reutman <mreutman@epiqsolutions.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/usb/host/ehci-timer.c b/drivers/usb/host/ehci-timer.c
index 424ac5d83714..37a3e0dece84 100644
--- a/drivers/usb/host/ehci-timer.c
+++ b/drivers/usb/host/ehci-timer.c
@@ -237,6 +237,7 @@ static void ehci_handle_start_intr_unlinks(struct ehci_hcd *ehci)
                                 ehci->intr_unlink_wait_cycle))
                         break;
                 list_del_init(&qh->unlink_node);
+                qh->unlink_reason |= QH_UNLINK_QUEUE_EMPTY;
                 start_unlink_intr(ehci, qh);
         }