target/linux/brcm2708/patches-3.18/0094-dwc_otg-put-some-barriers-back-where-they-should-be-.patch

   1 From 1e6d3936f120fd4420662850da0c89eb5c3d9f03 Mon Sep 17 00:00:00 2001
   2 From: P33M <P33M@github.com>
   3 Date: Thu, 22 Jan 2015 17:49:23 +0000
   4 Subject: [PATCH 094/114] dwc_otg: put some barriers back where they should be
   5  for UP
   6
   7 ---
   8  drivers/usb/host/dwc_otg/dwc_otg_fiq_fsm.c | 2 ++
   9  drivers/usb/host/dwc_otg/dwc_otg_hcd.c     | 1 +
  10  2 files changed, 3 insertions(+)
  11
  12 --- a/drivers/usb/host/dwc_otg/dwc_otg_fiq_fsm.c
  13 +++ b/drivers/usb/host/dwc_otg/dwc_otg_fiq_fsm.c
  14 @@ -1280,6 +1280,7 @@ void notrace dwc_otg_fiq_fsm(struct fiq_
  15
  16         }
  17         state->fiq_done++;
  18 +       mb();
  19         fiq_fsm_spin_unlock(&state->lock);
  20  }
  21
  22 @@ -1340,5 +1341,6 @@ void notrace dwc_otg_fiq_nop(struct fiq_
  23
  24         }
  25         state->fiq_done++;
  26 +       mb();
  27         fiq_fsm_spin_unlock(&state->lock);
  28  }
  29 --- a/drivers/usb/host/dwc_otg/dwc_otg_hcd.c
  30 +++ b/drivers/usb/host/dwc_otg/dwc_otg_hcd.c
  31 @@ -1928,6 +1928,7 @@ int fiq_fsm_queue_split_transaction(dwc_
  32                 st->hcchar_copy.b.chen = 1;
  33                 DWC_WRITE_REG32(&hc_regs->hcchar, st->hcchar_copy.d32);
  34         }
  35 +       mb();
  36         fiq_fsm_spin_unlock(&hcd->fiq_state->lock);
  37         local_fiq_enable();
  38         return 0;