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 diff --git a/drivers/usb/host/dwc_otg/dwc_otg_fiq_fsm.c b/drivers/usb/host/dwc_otg/dwc_otg_fiq_fsm.c
  13 index 0d2b04e..276ad0c7 100644
  14 --- a/drivers/usb/host/dwc_otg/dwc_otg_fiq_fsm.c
  15 +++ b/drivers/usb/host/dwc_otg/dwc_otg_fiq_fsm.c
  16 @@ -1280,6 +1280,7 @@ void notrace dwc_otg_fiq_fsm(struct fiq_state *state, int num_channels)
  17
  18         }
  19         state->fiq_done++;
  20 +       mb();
  21         fiq_fsm_spin_unlock(&state->lock);
  22  }
  23
  24 @@ -1340,5 +1341,6 @@ void notrace dwc_otg_fiq_nop(struct fiq_state *state)
  25
  26         }
  27         state->fiq_done++;
  28 +       mb();
  29         fiq_fsm_spin_unlock(&state->lock);
  30  }
  31 diff --git a/drivers/usb/host/dwc_otg/dwc_otg_hcd.c b/drivers/usb/host/dwc_otg/dwc_otg_hcd.c
  32 index 124ac16..ac70f1d 100644
  33 --- a/drivers/usb/host/dwc_otg/dwc_otg_hcd.c
  34 +++ b/drivers/usb/host/dwc_otg/dwc_otg_hcd.c
  35 @@ -1928,6 +1928,7 @@ int fiq_fsm_queue_split_transaction(dwc_otg_hcd_t *hcd, dwc_otg_qh_t *qh)
  36                 st->hcchar_copy.b.chen = 1;
  37                 DWC_WRITE_REG32(&hc_regs->hcchar, st->hcchar_copy.d32);
  38         }
  39 +       mb();
  40         fiq_fsm_spin_unlock(&hcd->fiq_state->lock);
  41         local_fiq_enable();
  42         return 0;
  43 --
  44 1.8.3.2
  45