Re: [PATCH v2] rtc: Add NXP PCF8523 support

[Andrew Morton <akpm@linux-foundation.org>]

On Wed, 28 Nov 2012 20:21:26 +0100
Thierry Reding <thierry.reding@avionic-design.de> wrote:

> +	err = i2c_transfer(client->adapter, &msg, 1);
> +	if (err < 0) {
> +		/*
> +		 * If the time cannot be set, restart the RTC anyway. Note
> +		 * that errors are ignored if the RTC cannot be started so
> +		 * that we have a chance to propagate the original error.
> +		 */
> +		pcf8523_start_rtc(client);
> +		return err;
> +	}
> +
> +	return pcf8523_start_rtc(client);

hm, well, that is of course equivalent to

	err = i2c_transfer(client->adapter, &msg, 1);
	pcf8523_start_rtc(client);
	return err;

but I suppose the code as proposed is clear, extensible, and not our
worst-ever sin ;)