bcm27xx: remove linux 4.19 support

[openwrt/staging/luka.git] / target / linux / bcm27xx / patches-4.19 / 950-0365-dwc_otg-fix-locking-around-dequeueing-and-killing-UR.patch

diff --git a/target/linux/bcm27xx/patches-4.19/950-0365-dwc_otg-fix-locking-around-dequeueing-and-killing-UR.patch b/target/linux/bcm27xx/patches-4.19/950-0365-dwc_otg-fix-locking-around-dequeueing-and-killing-UR.patch
deleted file mode 100644 (file)
index 53e2c98..0000000
--- a/target/linux/bcm27xx/patches-4.19/950-0365-dwc_otg-fix-locking-around-dequeueing-and-killing-UR.patch
+++ /dev/null
@@ -1,63 +0,0 @@
-From ea7ff2070d564858c445cfdbd883ea00927c0ada Mon Sep 17 00:00:00 2001
-From: P33M <p33m@github.com>
-Date: Tue, 9 Apr 2019 16:40:48 +0100
-Subject: [PATCH] dwc_otg: fix locking around dequeueing and killing
- URBs
-
-kill_urbs_in_qh_list() is practically only ever called with the fiq lock
-already held, so don't spinlock twice in the case where we need to cancel
-an isochronous transfer.
-
-Also fix up a case where the global interrupt register could be read with
-the fiq lock not held.
-
-Fixes the deadlock seen in https://github.com/raspberrypi/linux/issues/2907
----
- drivers/usb/host/dwc_otg/dwc_otg_cil_intr.c | 9 +++++++--
- drivers/usb/host/dwc_otg/dwc_otg_hcd.c      | 4 ----
- 2 files changed, 7 insertions(+), 6 deletions(-)
-
---- a/drivers/usb/host/dwc_otg/dwc_otg_cil_intr.c
-+++ b/drivers/usb/host/dwc_otg/dwc_otg_cil_intr.c
-@@ -1344,16 +1344,21 @@ static inline uint32_t dwc_otg_read_comm
-                */
-               gintmsk_common.b.portintr = 1;
-       }
--      gintsts.d32 = DWC_READ_REG32(&core_if->core_global_regs->gintsts);
--      gintmsk.d32 = DWC_READ_REG32(&core_if->core_global_regs->gintmsk);
-       if(fiq_enable) {
-               local_fiq_disable();
-+              fiq_fsm_spin_lock(&hcd->fiq_state->lock);
-+              gintsts.d32 = DWC_READ_REG32(&core_if->core_global_regs->gintsts);
-+              gintmsk.d32 = DWC_READ_REG32(&core_if->core_global_regs->gintmsk);
-               /* Pull in the interrupts that the FIQ has masked */
-               gintmsk.d32 |= ~(hcd->fiq_state->gintmsk_saved.d32);
-               gintmsk.d32 |= gintmsk_common.d32;
-               /* for the upstairs function to reenable - have to read it here in case FIQ triggers again */
-               reenable_gintmsk->d32 = gintmsk.d32;
-+              fiq_fsm_spin_unlock(&hcd->fiq_state->lock);
-               local_fiq_enable();
-+      } else {
-+              gintsts.d32 = DWC_READ_REG32(&core_if->core_global_regs->gintsts);
-+              gintmsk.d32 = DWC_READ_REG32(&core_if->core_global_regs->gintmsk);
-       }
- 
-       gahbcfg.d32 = DWC_READ_REG32(&core_if->core_global_regs->gahbcfg);
---- a/drivers/usb/host/dwc_otg/dwc_otg_hcd.c
-+++ b/drivers/usb/host/dwc_otg/dwc_otg_hcd.c
-@@ -195,15 +195,11 @@ static void kill_urbs_in_qh_list(dwc_otg
-                        * 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);