Re: [PATCH] clk: shmobile: div6: Avoid division by zero in .round_rate()

From: Mike Turquette
Date: Wed Feb 04 2015 - 17:02:04 EST


Quoting Sergei Shtylyov (2015-02-04 09:45:14)
> Hello.
>
> On 02/04/2015 08:32 PM, Wolfram Sang wrote:
>
> >> Anyone may call clk_round_rate() with a zero rate value, so we have to
> >> protect against that.
>
> >> Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
>
> > Acked-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>
>
> > I agree that this should not be fixed in the core because the fixup is
> > really driver dependant.
>
> Dunno, zero frequency seems generally insane to me.

It is useful to find the lowest frequency a clock can support. Basically
it is a search for the floor frequency.

Regards,
Mike

>
> WBR, Sergei
>
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