[PATCH v3 1/3] cpufreq: kirkwood: Add a cpufreq driver for Marvell Kirkwood SoCs

[Viresh Kumar]

On 27 January 2013 21:55, Andrew Lunn <andrew at lunn.ch> wrote:
> So when we have a multiplatform kernel with many of these drivers
> built in, all but one are going to notice they are not on the hardware
> they support, and return -ENODEV.
>
> By making it a platform driver, the kirkwood cpufreq driver will only
> get loaded on kirkwood systems, and won't slow down the boot for
> everybody else.

I tried to grep platform_driver in drivers/cpufreq/ and got only:
drivers/cpufreq/dbx500-cpufreq.c

Now, the counter argument to your explanation is, multiplatform kernel would be
built only for testing purpose and not for real product. So, even this kind
of delay is really not a big issue. On the other hand with platform driver
too, we will hit lot of other code and would consume some extra memory
for keeping its structures :)

--
viresh