target/linux/generic/patches-4.4/890-uart_optional_sysrq.patch

   1 --- a/lib/Kconfig.debug
   2 +++ b/lib/Kconfig.debug
   3 @@ -382,6 +382,11 @@ config MAGIC_SYSRQ_DEFAULT_ENABLE
   4           This may be set to 1 or 0 to enable or disable them all, or
   5           to a bitmask as described in Documentation/sysrq.txt.
   6
   7 +config MAGIC_SYSRQ_SERIAL
   8 +       bool "Enable magic SysRq key over serial"
   9 +       depends on MAGIC_SYSRQ
  10 +       default y
  11 +
  12  config DEBUG_KERNEL
  13         bool "Kernel debugging"
  14         help
  15 --- a/include/linux/serial_core.h
  16 +++ b/include/linux/serial_core.h
  17 @@ -426,7 +426,7 @@ extern void uart_handle_cts_change(struc
  18  extern void uart_insert_char(struct uart_port *port, unsigned int status,
  19                  unsigned int overrun, unsigned int ch, unsigned int flag);
  20
  21 -#ifdef SUPPORT_SYSRQ
  22 +#if defined(SUPPORT_SYSRQ) && defined(CONFIG_MAGIC_SYSRQ_SERIAL)
  23  static inline int
  24  uart_handle_sysrq_char(struct uart_port *port, unsigned int ch)
  25  {