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SubjectRe: clk dereference in arch/sh/kernel/cpufreq.c
On Thu, Jan 03, 2013 at 10:40:20AM +0100, Julia Lawall wrote:
> There has been a discussion recently about how the result of get_clk
> should be an opaque handle, not a value that can be dereferenced:
>
> https://lkml.org/lkml/2012/12/20/105
>
> There is such a dereference in arch/sh/kernel/cpufreq.c, in the function
> sh_cpufreq_cpu_init:
>
> freq_table = cpuclk->nr_freqs ? cpuclk->freq_table : NULL;
>
> It was not obvious to me, however, what API function should be used
> instead, so I am just reporting the (potential) problem.
>
In this case we would have to add some new API for fetching the frequency
table associated with the struct clk, which is reasonably
straightforward. It's not obvious how a private API vs deref of a type we
have a private definition for is any better or worse, though. This code
is not aimed at the common struct clk in any event.


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