[U-Boot] [U-Boot, v3, 6/9] usb: rockchip: be quiet on serial port while transferring data

[Philipp Tomsich]

> 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 at amarulasolutions.com>
> ---
>  drivers/usb/gadget/f_rockusb.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 

Reviewed-by: Philipp Tomsich <philipp.tomsich at theobroma-systems.com>