[PATCH 2/3] pwm: bcm2835: prevent division by zero

[Eric Anholt]

Stefan Wahren <stefan.wahren at i2se.com> writes:

> It's possible that the pwm clock become an orphan. So better
> check the result of clk_get_rate in order to prevent a division
> by zero.

How would we lose our clock when we're keeping the clock enabled from
driver probe until remove?

Patches 1 and 3 are:

Reviewed-by: Eric Anholt <eric at anholt.net>
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