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serial: core: Introduce uart_console_enabled() helper 

Introduce uart_console_enabled() helper which checks port to be console
and console is registered in the list.

Note, this helper will be used in the future as well.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20200214114339.53897-2-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Andy Shevchenko 2020-02-14 13:43:32 +02:00 committed by Greg Kroah-Hartman
parent 02042a4cf4
commit 7a49955af1
1 changed files with 7 additions and 2 deletions
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9
drivers/tty/serial/serial_core.c
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@ -1908,6 +1908,11 @@ static int uart_proc_show(struct seq_file *m, void *v)
}
#endif
static inline bool uart_console_enabled(struct uart_port *port)
{
return uart_console(port) && (port->cons->flags & CON_ENABLED);
}
#if defined(CONFIG_SERIAL_CORE_CONSOLE) || defined(CONFIG_CONSOLE_POLL)
/**
* uart_console_write - write a console message to a serial port
@ -2066,7 +2071,7 @@ uart_set_options(struct uart_port *port, struct console *co,
* If this port is a console, then the spinlock is already
* initialised.
*/
if (!(uart_console(port) && (port->cons->flags & CON_ENABLED))) {
if (!uart_console_enabled(port)) {
spin_lock_init(&port->lock);
lockdep_set_class(&port->lock, &port_lock_key);
}
@ -2828,7 +2833,7 @@ int uart_add_one_port(struct uart_driver *drv, struct uart_port *uport)
* If this port is a console, then the spinlock is already
* initialised.
*/
if (!(uart_console(uport) && (uport->cons->flags & CON_ENABLED))) {
if (!uart_console_enabled(uport)) {
spin_lock_init(&uport->lock);
lockdep_set_class(&uport->lock, &port_lock_key);
}