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| author |   Ulf Hansson <ulf.hansson@linaro.org> | 2019-04-25 11:04:13 +0200 |
|---|---|---|
| committer |   Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2019-04-25 23:18:03 +0200 |
| commit | f9ccd7c3a1d87cea3a6f9ed6c946dee9e7456b2e (patch) | |
| tree | 8bae26fc802b059655c18897bee909b7e6dac699 /arch/x86/kernel/cpu/microcode/intel.c | |
| parent | PM / Domains: Search for the CPU device outside the genpd lock (diff) | |
| download | linux-dev-f9ccd7c3a1d87cea3a6f9ed6c946dee9e7456b2e.tar.xz linux-dev-f9ccd7c3a1d87cea3a6f9ed6c946dee9e7456b2e.zip | |
PM / Domains: Allow to attach a CPU via genpd_dev_pm_attach_by_id|name()
Attaching a device via genpd_dev_pm_attach_by_id|name() makes
genpd allocate a virtual device that it attaches instead. This
leads to a problem in case when the base device belongs to a CPU.
More precisely, it means genpd_get_cpu() compares against the
virtual device, thus it fails to find a matching CPU device.
Address this limitation by passing the base device to genpd_get_cpu()
rather than the virtual device.
Moreover, to deal with detach correctly from genpd_remove_device(),
store the CPU number in struct generic_pm_domain_data, so as to be
able to clear the corresponding bit in the cpumask for the genpd.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'arch/x86/kernel/cpu/microcode/intel.c')
0 files changed, 0 insertions, 0 deletions