diff options
| author | Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> | 2012-07-09 10:10:28 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-07-09 20:48:26 +0400 |
| commit | 2f0de9d844d6c08a8e9059ed0b8d3d5ab6b7911b (patch) | |
| tree | 53b4f26d4a38eeb300140dc3209159df4ba655e9 | |
| parent | 277bd8746bb8d23c00ff8343e58df783544e961e (diff) | |
| download | linux-2f0de9d844d6c08a8e9059ed0b8d3d5ab6b7911b.tar.xz | |
usb: renesas_usbhs: use dmaengine helper functions
This patch used dmaengine helper functions instead of using hand setting.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | 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 6ec7f838d7fa..d5272d4714ce 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; } |