On Thu, Mar 01, 2007 at 12:15:46PM +0800, Wu, Bryan wrote:
> +#define stamp(fmt, args...) pr_debug("%s:%i: " fmt "\n", __FUNCTION__,
> __LINE__, ## args)
> +#define stampit() stamp("here i am")
> +
Are these really necessary for the final driver? It's littered all over
the place, and presumably the driver should be functional enough to not
need this sort of debugging instrumentation.
[snip]
> +static void rtc_bfin_sync_pending(void)
> +{
> + stampit();
> + while (!(bfin_read_RTC_ISTAT() & RTC_ISTAT_WRITE_COMPLETE)) {
> + if (!(bfin_read_RTC_ISTAT() & RTC_ISTAT_WRITE_PENDING))
> + break;
> + }
> + bfin_write_RTC_ISTAT(RTC_ISTAT_WRITE_COMPLETE);
> +}
> +
No timeout? (and superfluous braces)
> + case RTC_PIE_ON:
> + stampit();
> + spin_lock_irq(&rtc->lock);
> + rtc_bfin_sync_pending();
And it's also called under a spinlock each time.. this is a disaster
waiting to happen.
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