diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.14/950-0205-dwc_otg-Fix-a-regression-when-dequeueing-isochronous.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.14/950-0205-dwc_otg-Fix-a-regression-when-dequeueing-isochronous.patch | 60 |
1 files changed, 0 insertions, 60 deletions
diff --git a/target/linux/brcm2708/patches-4.14/950-0205-dwc_otg-Fix-a-regression-when-dequeueing-isochronous.patch b/target/linux/brcm2708/patches-4.14/950-0205-dwc_otg-Fix-a-regression-when-dequeueing-isochronous.patch deleted file mode 100644 index 32b5418f2a..0000000000 --- a/target/linux/brcm2708/patches-4.14/950-0205-dwc_otg-Fix-a-regression-when-dequeueing-isochronous.patch +++ /dev/null @@ -1,60 +0,0 @@ -From e071e9b36cb053f06a10986d987bfeb0e362657c Mon Sep 17 00:00:00 2001 -From: P33M <p33m@github.com> -Date: Tue, 13 Feb 2018 15:41:35 +0000 -Subject: [PATCH 205/454] dwc_otg: Fix a regression when dequeueing isochronous - transfers - -In 282bed95 (dwc_otg: make nak_holdoff work as intended with empty queues) -the dequeue mechanism was changed to leave FIQ-enabled transfers to run -to completion - to avoid leaving hub TT buffers with stale packets lying -around. - -This broke FIQ-accelerated isochronous transfers, as this then meant that -dozens of transfers were performed after the dequeue function returned. - -Restore the state machine fence for isochronous transfers. ---- - drivers/usb/host/dwc_otg/dwc_otg_hcd.c | 16 +++++++++++++++- - 1 file changed, 15 insertions(+), 1 deletion(-) - ---- a/drivers/usb/host/dwc_otg/dwc_otg_hcd.c -+++ b/drivers/usb/host/dwc_otg/dwc_otg_hcd.c -@@ -189,13 +189,21 @@ static void kill_urbs_in_qh_list(dwc_otg - - } - if(qh->channel) { -+ int n = qh->channel->hc_num; - /* Using hcchar.chen == 1 is not a reliable test. - * It is possible that the channel has already halted - * but not yet been through the IRQ handler. - */ - if (fiq_fsm_enable && (hcd->fiq_state->channel[qh->channel->hc_num].fsm != FIQ_PASSTHROUGH)) { -+ local_fiq_disable(); -+ fiq_fsm_spin_lock(&hcd->fiq_state->lock); - qh->channel->halt_status = DWC_OTG_HC_XFER_URB_DEQUEUE; - qh->channel->halt_pending = 1; -+ if (hcd->fiq_state->channel[n].fsm == FIQ_HS_ISOC_TURBO || -+ hcd->fiq_state->channel[n].fsm == FIQ_HS_ISOC_SLEEPING) -+ hcd->fiq_state->channel[n].fsm = FIQ_HS_ISOC_ABORTED; -+ fiq_fsm_spin_unlock(&hcd->fiq_state->lock); -+ local_fiq_enable(); - } else { - dwc_otg_hc_halt(hcd->core_if, qh->channel, - DWC_OTG_HC_XFER_URB_DEQUEUE); -@@ -596,9 +604,15 @@ int dwc_otg_hcd_urb_dequeue(dwc_otg_hcd_ - /* In FIQ FSM mode, we need to shut down carefully. - * The FIQ may attempt to restart a disabled channel */ - if (fiq_fsm_enable && (hcd->fiq_state->channel[n].fsm != FIQ_PASSTHROUGH)) { -+ local_fiq_disable(); -+ fiq_fsm_spin_lock(&hcd->fiq_state->lock); - qh->channel->halt_status = DWC_OTG_HC_XFER_URB_DEQUEUE; - qh->channel->halt_pending = 1; -- //hcd->fiq_state->channel[n].fsm = FIQ_DEQUEUE_ISSUED; -+ if (hcd->fiq_state->channel[n].fsm == FIQ_HS_ISOC_TURBO || -+ hcd->fiq_state->channel[n].fsm == FIQ_HS_ISOC_SLEEPING) -+ hcd->fiq_state->channel[n].fsm = FIQ_HS_ISOC_ABORTED; -+ fiq_fsm_spin_unlock(&hcd->fiq_state->lock); -+ local_fiq_enable(); - } else { - dwc_otg_hc_halt(hcd->core_if, qh->channel, - DWC_OTG_HC_XFER_URB_DEQUEUE); |