Subject: [PATCH v2] clk: let clk_disable() return immediately if clk is NULL or error

From: [email-masked] (Stephen Boyd)
Date: Fri, 15 Apr 2016 17:04:43 -0700

On 04/14, Masahiro Yamada wrote:
> 
> OK, now I notice another problem in my code;
> if foo_clk_init() fails for reason [2],
> clk_disable() WARN's due to zero enable_count.
> 
> if (WARN_ON(core->enable_count == 0))
>          return;
> 
> 
> 
> Perhaps, I got screwed up by splitting clock init stuff
> into a helper function.

Yep! Can't we just split the enable/disable out into another
function separate from the clk_get/put part? That would make
things more symmetric and avoid this problem.

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