This patch used dmaengine helper functions instead of using hand setting.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx>
---
drivers/usb/renesas_usbhs/fifo.c | 14 +++-----------
1 files changed, 3 insertions(+), 11 deletions(-)
diff --git a/drivers/usb/renesas_usbhs/fifo.c b/drivers/usb/renesas_usbhs/fifo.c
index 6ec7f83..d5272d4 100644
--- a/drivers/usb/renesas_usbhs/fifo.c
+++ b/drivers/usb/renesas_usbhs/fifo.c
@@ -771,22 +771,15 @@ static void xfer_work(struct work_struct *work)
struct usbhs_pipe *pipe = pkt->pipe;
struct usbhs_fifo *fifo = usbhs_pipe_to_fifo(pipe);
struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe);
- struct scatterlist sg;
struct dma_async_tx_descriptor *desc;
struct dma_chan *chan = usbhsf_dma_chan_get(fifo, pkt);
struct device *dev = usbhs_priv_to_dev(priv);
enum dma_transfer_direction dir;
- dma_cookie_t cookie;
dir = usbhs_pipe_is_dir_in(pipe) ? DMA_DEV_TO_MEM : DMA_MEM_TO_DEV;
- sg_init_table(&sg, 1);
- sg_set_page(&sg, virt_to_page(pkt->dma),
- pkt->length, offset_in_page(pkt->dma));
- sg_dma_address(&sg) = pkt->dma + pkt->actual;
- sg_dma_len(&sg) = pkt->trans;
-
- desc = dmaengine_prep_slave_sg(chan, &sg, 1, dir,
+ desc = dmaengine_prep_slave_single(chan, pkt->dma + pkt->actual,
+ pkt->trans, dir,
DMA_PREP_INTERRUPT | DMA_CTRL_ACK);
if (!desc)
return;
@@ -794,8 +787,7 @@ static void xfer_work(struct work_struct *work)
desc->callback = usbhsf_dma_complete;
desc->callback_param = pipe;
- cookie = desc->tx_submit(desc);
- if (cookie < 0) {
+ if (dmaengine_submit(desc) < 0) {
dev_err(dev, "Failed to submit dma descriptor\n");
return;
}
--
1.7.5.4
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