On 05/05/2015 at 13:44:21 -0700, Joe Perches wrote :

I suggest moving the time_after() test into the loop,
use break; and remove the exit label too.

Maybe something like:

	while (1) {
		ret = regmap_read(rtc->regmap, rtc->addr_base + RTC_BBPU,
				  &data);
		if (ret < 0)
			break;
		if (!(data & RTC_BBPU_CBUSY))
			break;
		if (time_after(jiffies, timeout)) {
			ret = -ETIMEDOUT;
			break;
		}
		cpu_relax();
	}

	return ret;

That certainly looks more readable.

-- 
Alexandre Belloni, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com