diff options
Diffstat (limited to 'arch/powerpc/platforms/powernv/idle.c')
| -rw-r--r-- | arch/powerpc/platforms/powernv/idle.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/arch/powerpc/platforms/powernv/idle.c b/arch/powerpc/platforms/powernv/idle.c index 841cb7f31f4f..6dfe8d611164 100644 --- a/arch/powerpc/platforms/powernv/idle.c +++ b/arch/powerpc/platforms/powernv/idle.c @@ -1464,14 +1464,19 @@ static int __init pnv_init_idle_states(void) power7_fastsleep_workaround_entry = false; power7_fastsleep_workaround_exit = false; } else { + struct device *dev_root; /* * OPAL_PM_SLEEP_ENABLED_ER1 is set. It indicates that * workaround is needed to use fastsleep. Provide sysfs * control to choose how this workaround has to be * applied. */ - device_create_file(cpu_subsys.dev_root, - &dev_attr_fastsleep_workaround_applyonce); + dev_root = bus_get_dev_root(&cpu_subsys); + if (dev_root) { + device_create_file(dev_root, + &dev_attr_fastsleep_workaround_applyonce); + put_device(dev_root); + } } update_subcore_sibling_mask(); |