diff options
Diffstat (limited to 'drivers/usb/chipidea/udc.c')
| -rw-r--r-- | drivers/usb/chipidea/udc.c | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c index b93356834bb5..b0c4ae1cd206 100644 --- a/drivers/usb/chipidea/udc.c +++ b/drivers/usb/chipidea/udc.c @@ -188,6 +188,9 @@ static int hw_ep_prime(struct ci_hdrc *ci, int num, int dir, int is_ctrl) { int n = hw_ep_bit(num, dir); + /* Synchronize before ep prime */ + wmb(); + if (is_ctrl && dir == RX && hw_read(ci, OP_ENDPTSETUPSTAT, BIT(num))) return -EAGAIN; @@ -506,8 +509,6 @@ static int _hardware_enqueue(struct ci_hw_ep *hwep, struct ci_hw_req *hwreq) hwep->qh.ptr->cap |= mul << __ffs(QH_MULT); } - wmb(); /* synchronize before ep prime */ - ret = hw_ep_prime(ci, hwep->num, hwep->dir, hwep->type == USB_ENDPOINT_XFER_CONTROL); done: @@ -534,9 +535,6 @@ static int reprime_dtd(struct ci_hdrc *ci, struct ci_hw_ep *hwep, hwep->qh.ptr->td.token &= cpu_to_le32(~(TD_STATUS_HALTED | TD_STATUS_ACTIVE)); - /* Synchronize before ep prime */ - wmb(); - return hw_ep_prime(ci, hwep->num, hwep->dir, hwep->type == USB_ENDPOINT_XFER_CONTROL); } |