pnv_init_idle_states discovers supported idle states from the
device tree and does the required initialization. Set power_save
function pointer only after this initialization is done

Reviewed-by: Gautham R. Shenoy <e...@linux.vnet.ibm.com>
Signed-off-by: Shreyas B. Prabhu <shre...@linux.vnet.ibm.com>
---
- No changes since v1

 arch/powerpc/platforms/powernv/idle.c  | 3 +++
 arch/powerpc/platforms/powernv/setup.c | 2 +-
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/arch/powerpc/platforms/powernv/idle.c 
b/arch/powerpc/platforms/powernv/idle.c
index fcc8b68..fbb09fb 100644
--- a/arch/powerpc/platforms/powernv/idle.c
+++ b/arch/powerpc/platforms/powernv/idle.c
@@ -285,6 +285,9 @@ static int __init pnv_init_idle_states(void)
        }
 
        pnv_alloc_idle_core_states();
+
+       if (supported_cpuidle_states & OPAL_PM_NAP_ENABLED)
+               ppc_md.power_save = power7_idle;
 out_free:
        kfree(flags);
 out:
diff --git a/arch/powerpc/platforms/powernv/setup.c 
b/arch/powerpc/platforms/powernv/setup.c
index ee6430b..8492bbb 100644
--- a/arch/powerpc/platforms/powernv/setup.c
+++ b/arch/powerpc/platforms/powernv/setup.c
@@ -315,7 +315,7 @@ define_machine(powernv) {
        .get_proc_freq          = pnv_get_proc_freq,
        .progress               = pnv_progress,
        .machine_shutdown       = pnv_shutdown,
-       .power_save             = power7_idle,
+       .power_save             = NULL,
        .calibrate_decr         = generic_calibrate_decr,
 #ifdef CONFIG_KEXEC
        .kexec_cpu_down         = pnv_kexec_cpu_down,
-- 
2.1.4

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