linux-kernel - Re: [PATCH 1/5] serial: Factor out uart_poll

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Date:	Tue, 28 Sep 2010 15:04:33 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Anton Vorontsov <cbouatmailru@...il.com>
Cc:	Greg Kroah-Hartman <gregkh@...e.de>,
	Alan Cox <alan@...ux.intel.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Tobias Klauser <tklauser@...tanz.ch>,
	linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/5] serial: Factor out uart_poll_timeout() from 8250
 driver

> +/* Base timer interval for polling */
> +int uart_poll_timeout(struct uart_port *port)
> +{
> +	int timeout = port->timeout;
> +
> +	return timeout > 6 ? (timeout / 2 - 2) : 1;
> +}
> +EXPORT_SYMBOL(uart_poll_timeout);

inline this rather than exporting it and making it global - it's a tiny
spec of code and the export symbol probably costs more !
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