diff options
Diffstat (limited to 'drivers/usb/renesas_usbhs/mod_gadget.c')
| -rw-r--r-- | drivers/usb/renesas_usbhs/mod_gadget.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/usb/renesas_usbhs/mod_gadget.c b/drivers/usb/renesas_usbhs/mod_gadget.c index 9a8e2e9141b2..cc3ad634d4f7 100644 --- a/drivers/usb/renesas_usbhs/mod_gadget.c +++ b/drivers/usb/renesas_usbhs/mod_gadget.c @@ -114,7 +114,7 @@ struct usbhsg_recip_handle { #define usbhsg_status_has(gp, b) (gp->status & b) /* - * list push/pop + * queue push/pop */ static void usbhsg_queue_push(struct usbhsg_uep *uep, struct usbhsg_request *ureq) @@ -160,6 +160,9 @@ static void usbhsg_queue_done(struct usbhs_pkt *pkt) usbhsg_queue_pop(uep, ureq, 0); } +/* + * dma map/unmap + */ static int usbhsg_dma_map(struct device *dev, struct usbhs_pkt *pkt, enum dma_data_direction dir) @@ -473,6 +476,11 @@ static int usbhsg_ep_enable(struct usb_ep *ep, uep->pipe = pipe; pipe->mod_private = uep; + /* + * usbhs_fifo_dma_push/pop_handler try to + * use dmaengine if possible. + * It will use pio handler if impossible. + */ if (usb_endpoint_dir_in(desc)) uep->handler = &usbhs_fifo_dma_push_handler; else |