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USB: EHCI: fix regression related to qh_refresh() 

This patch adds some code that inadvertently got left out of commit
c1fdb68e3d (USB: EHCI: changes related
to qh_refresh()).  The calls to qh_refresh() and qh_link_periodic()
were taken out of qh_schedule(); therefore it is necessary to call
these routines manually after calling qh_schedule().

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-and-tested-by: Oleksij Rempel <linux@rempel-privat.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Alan Stern 2013-05-29 11:33:52 -04:00 committed by Greg Kroah-Hartman
parent e2e2f0ea1c
commit 077f5f1c23
1 changed files with 6 additions and 1 deletions
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7
drivers/usb/host/ehci-sched.c
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@ -646,6 +646,10 @@ static void end_unlink_intr(struct ehci_hcd *ehci, struct ehci_qh *qh)
/* reschedule QH iff another request is queued */
if (!list_empty(&qh->qtd_list) && ehci->rh_state == EHCI_RH_RUNNING) {
rc = qh_schedule(ehci, qh);
if (rc == 0) {
qh_refresh(ehci, qh);
qh_link_periodic(ehci, qh);
}
/* An error here likely indicates handshake failure
* or no space left in the schedule. Neither fault
@ -653,9 +657,10 @@ static void end_unlink_intr(struct ehci_hcd *ehci, struct ehci_qh *qh)
*
* FIXME kill the now-dysfunctional queued urbs
*/
if (rc != 0)
else {
ehci_err(ehci, "can't reschedule qh %p, err %d\n",
qh, rc);
}
}
/* maybe turn off periodic schedule */