diff options
| -rw-r--r-- | arch/powerpc/platforms/powernv/idle.c | 9 | ||||
| -rw-r--r-- | arch/powerpc/platforms/powernv/subcore.c | 10 |
2 files changed, 15 insertions, 4 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(); diff --git a/arch/powerpc/platforms/powernv/subcore.c b/arch/powerpc/platforms/powernv/subcore.c index 7e98b00ea2e8..428532a69762 100644 --- a/arch/powerpc/platforms/powernv/subcore.c +++ b/arch/powerpc/platforms/powernv/subcore.c @@ -415,7 +415,9 @@ static DEVICE_ATTR(subcores_per_core, 0644, static int subcore_init(void) { + struct device *dev_root; unsigned pvr_ver; + int rc = 0; pvr_ver = PVR_VER(mfspr(SPRN_PVR)); @@ -435,7 +437,11 @@ static int subcore_init(void) set_subcores_per_core(1); - return device_create_file(cpu_subsys.dev_root, - &dev_attr_subcores_per_core); + dev_root = bus_get_dev_root(&cpu_subsys); + if (dev_root) { + rc = device_create_file(dev_root, &dev_attr_subcores_per_core); + put_device(dev_root); + } + return rc; } machine_device_initcall(powernv, subcore_init); |