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usb: renesas_usbhs: use PIPEnCLR.ACLRM instead of {C,Dn}FIFOCTR.BCLR in usbhs_pkt_pop() 

This patch uses usbhs_pipe_clear_without_sequence() instead of
usbhsf_fifo_clear() because usbhsf_fifo_clear() may not clear the pipe
buffer completely. This patch also changes the clearing condition from
DMA only to both DMA and PIO.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This commit is contained in:
Yoshihiro Shimoda 2017-12-06 17:18:33 +09:00 committed by Felipe Balbi
parent 8d8a0435d1
commit 5785e87a3d
1 changed files with 2 additions and 3 deletions
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5
drivers/usb/renesas_usbhs/fifo.c
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@ -94,8 +94,6 @@ static struct usbhs_pkt *__usbhsf_pkt_get(struct usbhs_pipe *pipe)
return list_first_entry_or_null(&pipe->list, struct usbhs_pkt, node);
}
static void usbhsf_fifo_clear(struct usbhs_pipe *pipe,
struct usbhs_fifo *fifo);
static void usbhsf_fifo_unselect(struct usbhs_pipe *pipe,
struct usbhs_fifo *fifo);
static struct dma_chan *usbhsf_dma_chan_get(struct usbhs_fifo *fifo,
@ -124,10 +122,11 @@ struct usbhs_pkt *usbhs_pkt_pop(struct usbhs_pipe *pipe, struct usbhs_pkt *pkt)
chan = usbhsf_dma_chan_get(fifo, pkt);
if (chan) {
dmaengine_terminate_all(chan);
usbhsf_fifo_clear(pipe, fifo);
usbhsf_dma_unmap(pkt);
}
usbhs_pipe_clear_without_sequence(pipe, 0, 0);
__usbhsf_pkt_del(pkt);
}