Hi Randy, On 1/9/20 11:53 PM, Randy Dunlap wrote: > 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 Thanks on catching this, Dmitry