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printk: add dummy printk_force_console_enter/exit helpers

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The newly added interface is broken when PRINTK is disabled:

drivers/tty/sysrq.c: In function '__handle_sysrq':
drivers/tty/sysrq.c:601:9: error: implicit declaration of function 'printk_force_console_enter' [-Wimplicit-function-declaration]
  601 |         printk_force_console_enter();
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/tty/sysrq.c:611:25: error: implicit declaration of function 'printk_force_console_exit' [-Wimplicit-function-declaration]
  611 |                         printk_force_console_exit();
      |                         ^~~~~~~~~~~~~~~~~~~~~~~~~

Add empty stub functions for both.

Fixes: ed76c07c68 ("printk: Introduce FORCE_CON flag")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Marcos Paulo de Souza <mpdesouza@suse.com>
Tested-by: Marcos Paulo de Souza <mpdesouza@suse.com>
Link: https://lore.kernel.org/r/20241112142939.724093-1-arnd@kernel.org
Signed-off-by: Petr Mladek <pmladek@suse.com>
This commit is contained in:
Arnd Bergmann 2024-11-12 15:29:15 +01:00 committed by Petr Mladek
parent e3eea25e0b
commit da115c4ee2
1 changed files with 8 additions and 0 deletions
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8
include/linux/printk.h
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@ -232,6 +232,14 @@ static inline void printk_deferred_exit(void)
{
}
static inline void printk_force_console_enter(void)
{
}
static inline void printk_force_console_exit(void)
{
}
static inline int printk_ratelimit(void)
{
return 0;