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usb: renesas_usbhs: fix the BCLR setting condition for non-DCP pipe
This patch fixes an issue that the driver sets the BCLR bit of
{C,Dn}FIFOCTR register to 1 even when it's non-DCP pipe and
the FRDY bit of {C,Dn}FIFOCTR register is set to 1.
Fixes: e8d548d549
("usb: renesas_usbhs: fifo became independent from pipe.")
Cc: <stable@vger.kernel.org> # v3.1+
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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@ -282,11 +282,17 @@ static void usbhsf_fifo_clear(struct usbhs_pipe *pipe,
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struct usbhs_fifo *fifo)
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{
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struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
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int ret = 0;
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if (!usbhs_pipe_is_dcp(pipe))
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usbhsf_fifo_barrier(priv, fifo);
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ret = usbhsf_fifo_barrier(priv, fifo);
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usbhs_write(priv, fifo->ctr, BCLR);
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/*
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* if non-DCP pipe, this driver should set BCLR when
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* usbhsf_fifo_barrier() returns 0.
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*/
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if (!ret)
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usbhs_write(priv, fifo->ctr, BCLR);
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}
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static int usbhsf_fifo_rcv_len(struct usbhs_priv *priv,
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