On 02/03/2022 11:19, Woody Lin wrote:
> The 'kgdboc_earlycon_init' looks for boot console that has both .read
> and .write callbacks. Adds 'samsung_early_read' to samsung_tty.c's early
> console to support kgdboc.
>
> Signed-off-by: Woody Lin <[email protected]>
> ---
> drivers/tty/serial/samsung_tty.c | 25 +++++++++++++++++++++++++
> 1 file changed, 25 insertions(+)
>
> diff --git a/drivers/tty/serial/samsung_tty.c b/drivers/tty/serial/samsung_tty.c
> index d002a4e48ed9..eeb30d016ff1 100644
> --- a/drivers/tty/serial/samsung_tty.c
> +++ b/drivers/tty/serial/samsung_tty.c
> @@ -2949,6 +2949,7 @@ static void wr_reg_barrier(struct uart_port *port, u32 reg, u32 val)
>
> struct samsung_early_console_data {
> u32 txfull_mask;
> + u32 rxfifo_mask;
> };
>
> static void samsung_early_busyuart(struct uart_port *port)
> @@ -2983,6 +2984,26 @@ static void samsung_early_write(struct console *con, const char *s,
> uart_console_write(&dev->port, s, n, samsung_early_putc);
> }
>
> +static int samsung_early_read(struct console *con, char *s, unsigned int n)
> +{
> + struct earlycon_device *dev = con->data;
> + struct samsung_early_console_data *data = dev->port.private_data;
This can be const.
Rest looks ok.
Best regards,
Krzysztof