Re: [PATCH] serial: Use -EAGAIN in getc and putc

On Mon, 5 Dec 2022 at 01:37, Pali Rohár pali@kernel.org wrote:

U-Boot serial code already handles -EAGAIN value from getc and putc callbacks. So change drivers code to return -EAGAIN when HW is busy instead of doing its own busy loop and waiting until HW is ready.

Signed-off-by: Pali Rohár pali@kernel.org

drivers/serial/serial_arc.c | 8 ++++---- drivers/serial/serial_lpuart.c | 8 ++++---- drivers/serial/serial_mvebu_a3700.c | 8 ++++---- 3 files changed, 12 insertions(+), 12 deletions(-)

Reviewed-by: Simon Glass sjg@chromium.org