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dwc_otg: initialise sched_frame for periodic QHs that were parked

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If a periodic QH has no remaining QTDs, then it is removed from all
periodic schedules. When re-adding, initialise the sched_frame and
start_split_frame from the current value of the frame counter.

See https://bugs.launchpad.net/raspbian/+bug/1819560
and
 https://github.com/raspberrypi/linux/issues/3883

Signed-off-by: Jonathan Bell <jonathan@raspberrypi.com>
This commit is contained in:
Jonathan Bell
2020-10-07 15:09:29 +01:00
committed by popcornmix
parent 0bdfc8284b
commit 9c49a8e93b
1 changed files with 4 additions and 0 deletions
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4
drivers/usb/host/dwc_otg/dwc_otg_hcd_queue.c
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@@ -689,7 +689,11 @@ int dwc_otg_hcd_qh_add(dwc_otg_hcd_t * hcd, dwc_otg_qh_t * qh)
&qh->qh_list_entry);
//hcd->fiq_state->kick_np_queues = 1;
} else {
/* If the QH wasn't in a schedule, then sched_frame is stale. */
qh->sched_frame = dwc_frame_num_inc(dwc_otg_hcd_get_frame_number(hcd),
SCHEDULE_SLOP);
status = schedule_periodic(hcd, qh);
qh->start_split_frame = qh->sched_frame;
if ( !hcd->periodic_qh_count ) {
intr_mask.b.sofintr = 1;
if (fiq_enable) {