diff options
Diffstat (limited to 'drivers/usb/renesas_usbhs/fifo.c')
-rw-r--r-- | drivers/usb/renesas_usbhs/fifo.c | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/drivers/usb/renesas_usbhs/fifo.c b/drivers/usb/renesas_usbhs/fifo.c index f1893e08e51a..36e5b5c530bd 100644 --- a/drivers/usb/renesas_usbhs/fifo.c +++ b/drivers/usb/renesas_usbhs/fifo.c @@ -808,20 +808,27 @@ static void xfer_work(struct work_struct *work) { struct usbhs_pkt *pkt = container_of(work, struct usbhs_pkt, work); struct usbhs_pipe *pipe = pkt->pipe; - struct usbhs_fifo *fifo = usbhs_pipe_to_fifo(pipe); + struct usbhs_fifo *fifo; struct usbhs_priv *priv = usbhs_pipe_to_priv(pipe); struct dma_async_tx_descriptor *desc; - struct dma_chan *chan = usbhsf_dma_chan_get(fifo, pkt); + struct dma_chan *chan; struct device *dev = usbhs_priv_to_dev(priv); enum dma_transfer_direction dir; + unsigned long flags; + usbhs_lock(priv, flags); + fifo = usbhs_pipe_to_fifo(pipe); + if (!fifo) + goto xfer_work_end; + + chan = usbhsf_dma_chan_get(fifo, pkt); dir = usbhs_pipe_is_dir_in(pipe) ? DMA_DEV_TO_MEM : DMA_MEM_TO_DEV; desc = dmaengine_prep_slave_single(chan, pkt->dma + pkt->actual, pkt->trans, dir, DMA_PREP_INTERRUPT | DMA_CTRL_ACK); if (!desc) - return; + goto xfer_work_end; desc->callback = usbhsf_dma_complete; desc->callback_param = pipe; @@ -829,7 +836,7 @@ static void xfer_work(struct work_struct *work) pkt->cookie = dmaengine_submit(desc); if (pkt->cookie < 0) { dev_err(dev, "Failed to submit dma descriptor\n"); - return; + goto xfer_work_end; } dev_dbg(dev, " %s %d (%d/ %d)\n", @@ -840,6 +847,9 @@ static void xfer_work(struct work_struct *work) usbhs_pipe_set_trans_count_if_bulk(pipe, pkt->trans); dma_async_issue_pending(chan); usbhs_pipe_enable(pipe); + +xfer_work_end: + usbhs_unlock(priv, flags); } /* @@ -859,7 +869,7 @@ static int usbhsf_dma_prepare_push(struct usbhs_pkt *pkt, int *is_done) /* use PIO if packet is less than pio_dma_border or pipe is DCP */ if ((len < usbhs_get_dparam(priv, pio_dma_border)) || - usbhs_pipe_is_dcp(pipe)) + usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_ISOC)) goto usbhsf_pio_prepare_push; /* check data length if this driver don't use USB-DMAC */ @@ -964,7 +974,7 @@ static int usbhsf_dma_prepare_pop_with_usb_dmac(struct usbhs_pkt *pkt, /* use PIO if packet is less than pio_dma_border or pipe is DCP */ if ((pkt->length < usbhs_get_dparam(priv, pio_dma_border)) || - usbhs_pipe_is_dcp(pipe)) + usbhs_pipe_type_is(pipe, USB_ENDPOINT_XFER_ISOC)) goto usbhsf_pio_prepare_pop; fifo = usbhsf_get_dma_fifo(priv, pkt); |