usb: chipidea: udc: move write barrier into hw_ep_prime
Since there should be a write barrier before every call of hw_ep_prime we could move it into hw_ep_prime. Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Signed-off-by: Peter Chen <peter.chen@nxp.com>
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@ -188,6 +188,9 @@ static int hw_ep_prime(struct ci_hdrc *ci, int num, int dir, int is_ctrl)
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{
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int n = hw_ep_bit(num, dir);
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/* Synchronize before ep prime */
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wmb();
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if (is_ctrl && dir == RX && hw_read(ci, OP_ENDPTSETUPSTAT, BIT(num)))
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return -EAGAIN;
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@ -506,8 +509,6 @@ static int _hardware_enqueue(struct ci_hw_ep *hwep, struct ci_hw_req *hwreq)
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hwep->qh.ptr->cap |= mul << __ffs(QH_MULT);
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}
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wmb(); /* synchronize before ep prime */
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ret = hw_ep_prime(ci, hwep->num, hwep->dir,
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hwep->type == USB_ENDPOINT_XFER_CONTROL);
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done:
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@ -534,9 +535,6 @@ static int reprime_dtd(struct ci_hdrc *ci, struct ci_hw_ep *hwep,
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hwep->qh.ptr->td.token &=
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cpu_to_le32(~(TD_STATUS_HALTED | TD_STATUS_ACTIVE));
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/* Synchronize before ep prime */
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wmb();
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return hw_ep_prime(ci, hwep->num, hwep->dir,
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hwep->type == USB_ENDPOINT_XFER_CONTROL);
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}
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