On 2/23/07, David Miller <[email protected]> wrote:
> While probeing PLL information via radeon_get_pllinfo(), it does a
> "gettimeofday(); do_something(); gettimeofday();" type sequence
> explicitly with interrupts disabled, so ends up with a zero
> measurement which then results in a bunch of divisions by zero.
>
> We should decide whether gettimeofday() can be expected to advance with
> interrupts disabled, or that clocksource_jiffies is simply invalid because
> of this behavior.
Actually, with clocksource based gettimeofday(), radeon built-in cannot
work at all.
The reason is that the clocksource code will not jump over to a
clock source other than clocksource_jiffies until the late initcalls
are run, because of this code:
Check out the patch I sent out yesterday. It should resolve this problem.
thanks
-john
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