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Merge branch 'pm-cpuidle' 

* pm-cpuidle:
  ARM: cpuidle: Convert to use cpuidle_register|unregister()
  ARM: cpuidle: Don't register the driver when back-end init returns -ENXIO
This commit is contained in:
Rafael J. Wysocki 2018-11-11 00:02:37 +01:00
parent aeaf6a4b2d 3e452e636d
commit 97dc6c03c1
1 changed files with 7 additions and 33 deletions
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40
drivers/cpuidle/cpuidle-arm.c
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@ -82,7 +82,6 @@ static int __init arm_idle_init_cpu(int cpu)
{
int ret;
struct cpuidle_driver *drv;
struct cpuidle_device *dev;
drv = kmemdup(&arm_idle_driver, sizeof(*drv), GFP_KERNEL);
if (!drv)
@ -103,13 +102,6 @@ static int __init arm_idle_init_cpu(int cpu)
goto out_kfree_drv;
}
ret = cpuidle_register_driver(drv);
if (ret) {
if (ret != -EBUSY)
pr_err("Failed to register cpuidle driver\n");
goto out_kfree_drv;
}
/*
* Call arch CPU operations in order to initialize
* idle states suspend back-end specific data
@ -117,37 +109,21 @@ static int __init arm_idle_init_cpu(int cpu)
ret = arm_cpuidle_init(cpu);
/*
* Skip the cpuidle device initialization if the reported
* Allow the initialization to continue for other CPUs, if the reported
* failure is a HW misconfiguration/breakage (-ENXIO).
*/
if (ret == -ENXIO)
return 0;
if (ret) {
pr_err("CPU %d failed to init idle CPU ops\n", cpu);
goto out_unregister_drv;
ret = ret == -ENXIO ? 0 : ret;
goto out_kfree_drv;
}
dev = kzalloc(sizeof(*dev), GFP_KERNEL);
if (!dev) {
ret = -ENOMEM;
goto out_unregister_drv;
}
dev->cpu = cpu;
ret = cpuidle_register_device(dev);
if (ret) {
pr_err("Failed to register cpuidle device for CPU %d\n",
cpu);
goto out_kfree_dev;
}
ret = cpuidle_register(drv, NULL);
if (ret)
goto out_kfree_drv;
return 0;
out_kfree_dev:
kfree(dev);
out_unregister_drv:
cpuidle_unregister_driver(drv);
out_kfree_drv:
kfree(drv);
return ret;
@ -178,9 +154,7 @@ out_fail:
while (--cpu >= 0) {
dev = per_cpu(cpuidle_devices, cpu);
drv = cpuidle_get_cpu_driver(dev);
cpuidle_unregister_device(dev);
cpuidle_unregister_driver(drv);
kfree(dev);
cpuidle_unregister(drv);
kfree(drv);
}