Re: [PATCH] clocksource: sun5i: fail gracefully when clock rate is unavailable

From: Maxime Ripard
Date: Thu Jan 10 2019 - 01:59:46 EST


On Thu, Jan 10, 2019 at 02:22:07PM +0800, Chen-Yu Tsai wrote:
> If the clock tree is not fully populated when the timer-sun5i init code
> is called, attempts to get the clock rate for the timer would fail and
> return 0.
>
> Make the init code for both clock events and clocksource check the
> returned clock rate and fail gracefully if the result is 0, instead of
> causing a divide by 0 exception later on.
>
> Fixes: 4a59058f0b09 ("clocksource/drivers/sun5i: Refactor the current code")
> Signed-off-by: Chen-Yu Tsai <wens@xxxxxxxx>

Acked-by: Maxime Ripard <maxime.ripard@xxxxxxxxxxx>

Thanks!
Maxime

--
Maxime Ripard, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com

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