While downloading or uploading megabytes of data we had thousands of printf in console like:
transfer 0x10000 bytes done OR Uploading 0x1000 bytes
This because transfers are chunked and there is no way on target side to know the overall transfer size (to print one string per overall transfer).
All these prints on serial console do slow down significantly the transfer and does not offer a significant information to the developer: rkdeveloptool and Rockchip original tool do use small chunks read/writes on big transfers. This allows on workstation to print percentage of transfer complete and as well offers to developer the information about: transfer is running OK. On error, either the percentage will stop or an error will be shown on workstation console.
Signed-off-by: Alberto Panizzo alberto@amarulasolutions.com --- drivers/usb/gadget/f_rockusb.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/gadget/f_rockusb.c b/drivers/usb/gadget/f_rockusb.c index bcdc2ba..0959b8c 100644 --- a/drivers/usb/gadget/f_rockusb.c +++ b/drivers/usb/gadget/f_rockusb.c @@ -474,7 +474,7 @@ static void tx_handler_ul_image(struct usb_ep *ep, struct usb_request *req) memcpy(in_req->buf, rbuffer, transfer_size); in_req->length = transfer_size; in_req->complete = tx_handler_ul_image; - printf("Uploading 0x%x bytes\n", transfer_size); + debug("Uploading 0x%x bytes\n", transfer_size); usb_ep_dequeue(rockusb_func->in_ep, in_req); ret = usb_ep_queue(rockusb_func->in_ep, in_req, 0); if (ret) @@ -536,7 +536,7 @@ static void rx_handler_dl_image(struct usb_ep *ep, struct usb_request *req) req->complete = rx_handler_command; req->length = EP_BUFFER_SIZE; f_rkusb->buf = f_rkusb->buf_head; - printf("transfer 0x%x bytes done\n", f_rkusb->dl_size); + debug("transfer 0x%x bytes done\n", f_rkusb->dl_size); f_rkusb->dl_size = 0; rockusb_tx_write_csw(f_rkusb->tag, 0, CSW_GOOD, USB_BULK_CS_WRAP_LEN);