On Mon, 5 Sept 2022 at 03:31, Pali Rohár <[email protected]> wrote:
>
> UART drivers have putc/puts functions which just put characters into HW
> transmit queue and do not wait until all data are transmitted.
>
> Implement flush callback via serial driver's pending(false) callback which
> waits until HW transmit all characters from the queue.
>
> Signed-off-by: Pali Rohár <[email protected]>
> ---
>  drivers/serial/serial-uclass.c | 20 ++++++++++++++++++++
>  1 file changed, 20 insertions(+)

Reviewed-by: Simon Glass <[email protected]>

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