diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0982-dwc_otg-initialise-sched_frame-for-periodic-QHs-that.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.4/950-0982-dwc_otg-initialise-sched_frame-for-periodic-QHs-that.patch | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0982-dwc_otg-initialise-sched_frame-for-periodic-QHs-that.patch b/target/linux/bcm27xx/patches-5.4/950-0982-dwc_otg-initialise-sched_frame-for-periodic-QHs-that.patch new file mode 100644 index 0000000000..2a12614196 --- /dev/null +++ b/target/linux/bcm27xx/patches-5.4/950-0982-dwc_otg-initialise-sched_frame-for-periodic-QHs-that.patch @@ -0,0 +1,33 @@ +From 2ae3859a69cecc2820f768f4d22022000e9f2e22 Mon Sep 17 00:00:00 2001 +From: Jonathan Bell <jonathan@raspberrypi.org> +Date: Wed, 7 Oct 2020 15:09:29 +0100 +Subject: [PATCH] dwc_otg: initialise sched_frame for periodic QHs + that were parked + +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> +--- + drivers/usb/host/dwc_otg/dwc_otg_hcd_queue.c | 4 ++++ + 1 file changed, 4 insertions(+) + +--- a/drivers/usb/host/dwc_otg/dwc_otg_hcd_queue.c ++++ b/drivers/usb/host/dwc_otg/dwc_otg_hcd_queue.c +@@ -689,7 +689,11 @@ int dwc_otg_hcd_qh_add(dwc_otg_hcd_t * h + &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) { |