[PATCH v4] serial/efm32: add new driver

[Joe Perches]

On Wed, 2012-01-25 at 09:05 +0100, Uwe Kleine-König wrote:
> Signed-off-by: Uwe Kleine-König <u.kleine-koenig at pengutronix.de>

trivial comments below:

> diff --git a/drivers/tty/serial/efm32-uart.c b/drivers/tty/serial/efm32-uart.c
[]
> @@ -0,0 +1,830 @@
> +#if defined(CONFIG_SERIAL_EFM32_UART_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
> +#define SUPPORT_SYSRQ
> +#endif

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

> +static void efm32_uart_rx_chars(struct efm32_uart_port *efm_port,
> +		struct tty_struct *tty)
> +{
[]
> +		if ((rxdata & UARTn_RXDATAX_FERR) &&
> +				!(rxdata & UARTn_RXDATAX_RXDATA__MASK)) {

Perhaps better as:

		if ((rxdata & UARTn_RXDATAX_FERR) &&
		    !(rxdata & UARTn_RXDATAX_RXDATA__MASK)) {

and RXDATA__MASK with 2 underscores?  perhaps just one _?

> +static int efm32_uart_console_setup(struct console *co, char *options)
[]
> +		for (i = 0; i < ARRAY_SIZE(efm32_uart_ports); ++i) {
> +			if (efm32_uart_ports[i]) {
> +				pr_warn("efm32-console: fall back to console index %u (from %hhi)\n",
> +						i, co->index);

				pr_warn("fall back to ..."
[]
> +	efm_port = efm32_uart_ports[co->index];
> +	if (!efm_port) {
> +		pr_warn("efm32-console: No port at %d\n", co->index);

		pr_warn("No port at..."