Subject: [PATCH v6 10/15] serial: stm32-usart: Add STM32 USART Driver

From: [email-masked] (Vladimir Zapolskiy)
Date: Thu, 9 Apr 2015 16:04:39 +0300

Hi Maxime,

On 07.04.2015 19:30, Maxime Coquelin wrote:
> This drivers adds support to the STM32 USART controller, which is a
> standard serial driver.
> 
> Tested-by: Chanwoo Choi <[email-masked]>
> Reviewed-by: Peter Hurley <[email-masked]>
> Signed-off-by: Maxime Coquelin <[email-masked]>
> ---
>  drivers/tty/serial/Kconfig       |  17 +
>  drivers/tty/serial/Makefile      |   1 +
>  drivers/tty/serial/stm32-usart.c | 735 +++++++++++++++++++++++++++++++++++++++
>  include/uapi/linux/serial_core.h |   3 +
>  4 files changed, 756 insertions(+)
>  create mode 100644 drivers/tty/serial/stm32-usart.c

[snip]

> +static void stm32_console_write(struct console *co, const char *s, unsigned cnt)
> +{
> +	struct uart_port *port = &stm32_ports[co->index].port;
> +	unsigned long flags;
> +	u32 old_cr1, new_cr1;
> +	int locked = 1;
> +
> +	if (oops_in_progress) {
> +		locked = spin_trylock_irqsave(&port->lock, flags);
> +	} else {
> +		locked = 1;

locked = 1 is done from the declaration.

Also do you want to add "if (port->sysrq) locked = 0;" check?

> +		spin_lock_irqsave(&port->lock, flags);
> +	}
> +

[snip]

Everything else is fine from point of view.

Reviewed-by: Vladimir Zapolskiy <[email-masked]>

--
With best wishes,
Vladimir