[PATCH v8 4/7] qcom: pm: Add cpu low power mode functions

Stephen Boyd
2014-10-09T19:26:20Z

On 10/09, Stephen Boyd wrote:
> On 10/09, Lina Iyer wrote:
> > On Wed, Oct 08 2014 at 19:17 -0600, Stephen Boyd wrote:
> >
> > >>+static int __init qcom_pm_device_init(void)
> > >>+{
> > >>+ platform_device_register(&qcom_cpuidle_device);
> > >>+
> > >
> > >This is wrong. We're going to register a platform device whenever
> > >this file is included in a kernel. This is then going to try and
> > >probe the qcom_cpuidle device which is going to fail and print an
> > >error message if we're not running on a qcom device.
> > Why would this file be compiled on a non-qcom target? The file has a
> > dependency on ARCH_QCOM (as it should be) and would not be compiled on a
> > non-qcom target.
>
> We will compile this file on non-qcom devices in a multi-platform
> kernel build. Actually that looks like it would be a problem
> because cpuidle_register() will blow away any other registered
> driver on non-qcom devices.

Oh right, this won't happen because we won't have the idle states
in the CPU node. We'll just get the annoying error message
instead.

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