Hi,
On 1/9/20 1:54 PM, Dmitry Safonov wrote:
>
> Based-on-patch-by: Vasiliy Khoruzhick <vasilykh@xxxxxxxxxx>
> Signed-off-by: Dmitry Safonov <dima@xxxxxxxxxx>
> ---
> drivers/tty/serial/serial_core.c | 52 ++++++++++++++++++++++++++++----
> include/linux/serial_core.h | 2 +-
> lib/Kconfig.debug | 8 +++++
> 3 files changed, 55 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
> index 6ac9dfed3423..f70eba032d0b 100644
> --- a/drivers/tty/serial/serial_core.c
> +++ b/drivers/tty/serial/serial_core.c
> @@ -3081,6 +3081,38 @@ void uart_insert_char(struct uart_port *port, unsigned int status,
> }
> EXPORT_SYMBOL_GPL(uart_insert_char);
>
> +const char sysrq_toggle_seq[] = CONFIG_MAGIC_SYSRQ_SERIAL_SEQUENCE;
> +
> +static void uart_sysrq_on(struct work_struct *w)
> +{
> + sysrq_toggle_support(1);
> + pr_info("SysRq is enabled by magic sequience on serial\n");
typo: sequence
> +}
> +static DECLARE_WORK(sysrq_enable_work, uart_sysrq_on);
--
~Randy
