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usb: ehci: Do not disable an already disabled periodic schedule

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When periodic_schedules == 0, the schedule is disabled and there is no reason
to disable it again.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
This commit is contained in:
Hans de Goede 2014-09-24 14:06:03 +02:00 committed by Marek Vasut
parent 0834bb2fb0
commit 32f2eac1e0
1 changed files with 5 additions and 3 deletions
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8
drivers/usb/host/ehci-hcd.c
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@ -1249,9 +1249,11 @@ create_int_queue(struct usb_device *dev, unsigned long pipe, int queuesize,
ALIGN_END_ADDR(struct qTD, result->tds,
queuesize));
if (disable_periodic(ctrl) < 0) {
debug("FATAL: periodic should never fail, but did");
goto fail3;
if (ctrl->periodic_schedules > 0) {
if (disable_periodic(ctrl) < 0) {
debug("FATAL: periodic should never fail, but did");
goto fail3;
}
}
/* hook up to periodic list */