Re: [PATCH printk v4 08/27] serial: core: Provide low-level functions to lock port
From: Petr Mladek
Date: Tue Apr 09 2024 - 08:00:37 EST
On Wed 2024-04-03 00:17:10, John Ogness wrote:
> It will be necessary at times for the uart nbcon console
> drivers to acquire the port lock directly (without the
> additional nbcon functionality of the port lock wrappers).
> These are special cases such as the implementation of the
> device_lock()/device_unlock() callbacks or for internal
> port lock wrapper synchronization.
>
> Provide low-level variants __uart_port_lock_irqsave() and
> __uart_port_unlock_irqrestore() for this purpose.
>
> Signed-off-by: John Ogness <john.ogness@xxxxxxxxxxxxx>
Reviewed-by: Petr Mladek <pmladek@xxxxxxxx>
Best Regards,
Petr