linux-kernel - Re: [PATCH 15/37] sparc,sunzilog: Add console polling support for sunzilog serial driver

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Date:	Wed, 23 Dec 2009 13:50:28 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	jason.wessel@...driver.com
Cc:	linux-kernel@...r.kernel.org, kgdb-bugreport@...ts.sourceforge.net,
	kdb@....sgi.com, mingo@...e.hu
Subject: Re: [PATCH 15/37] sparc,sunzilog: Add console polling support for
 sunzilog serial driver

From: Jason Wessel <jason.wessel@...driver.com>
Date: Wed, 23 Dec 2009 15:19:28 -0600

> +static void sunzilog_put_poll_char(struct uart_port *port,
> +			unsigned char ch)
> +{
> +	struct uart_sunzilog_port *up = (struct uart_sunzilog_port *)port;
> +
> +	sunzilog_putchar(&up->port, ch);
> +	udelay(2);
> +
> +}
> +#endif /* CONFIG_CONSOLE_POLL */

Just curious, what is the udelay() for?

>  static struct uart_ops sunzilog_pops = {
>  	.tx_empty	=	sunzilog_tx_empty,
>  	.set_mctrl	=	sunzilog_set_mctrl,
> @@ -1013,6 +1061,10 @@ static struct uart_ops sunzilog_pops = {
>  	.request_port	=	sunzilog_request_port,
>  	.config_port	=	sunzilog_config_port,
>  	.verify_port	=	sunzilog_verify_port,
> +#ifdef CONFIG_CONSOLE_POLL
> +	.poll_get_char	= sunzilog_get_poll_char,
> +	.poll_put_char	= sunzilog_put_poll_char,
> +#endif
>  };

Please make the indentation consistent with the rest of those in
this structure.
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