| Message ID | 1441310314-8857-4-git-send-email-lina.iyer@linaro.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On 09/03, Lina Iyer wrote: > CPUs may be powered off from CPUIdle or hotplug and are called with > IRQ's disabled. Define CPU devices as IRQ safe, so they may be runtime > suspended/resumed. > > Signed-off-by: Lina Iyer <lina.iyer@linaro.org> > --- Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
diff --git a/drivers/base/cpu.c b/drivers/base/cpu.c index 78720e7..56cb1d2 100644 --- a/drivers/base/cpu.c +++ b/drivers/base/cpu.c @@ -17,6 +17,7 @@ #include <linux/of.h> #include <linux/cpufeature.h> #include <linux/tick.h> +#include <linux/pm_runtime.h> #include "base.h" @@ -371,10 +372,11 @@ int register_cpu(struct cpu *cpu, int num) if (cpu->hotpluggable) cpu->dev.groups = hotplugable_cpu_attr_groups; error = device_register(&cpu->dev); - if (!error) + if (!error) { + pm_runtime_irq_safe(&cpu->dev); per_cpu(cpu_sys_devices, num) = &cpu->dev; - if (!error) register_cpu_under_node(num, cpu_to_node(num)); + } return error; }
CPUs may be powered off from CPUIdle or hotplug and are called with IRQ's disabled. Define CPU devices as IRQ safe, so they may be runtime suspended/resumed. Signed-off-by: Lina Iyer <lina.iyer@linaro.org> --- drivers/base/cpu.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)