[PATCH 03/14] powerpc/64s: idle provide a default idle for POWER9

[Nicholas Piggin]

Before the cpuidle driver is enabled, provide a default idle
function similarly to POWER7/8.

This should not have much effect, because the cpuidle driver
for powernv is mandatory, but if that changes we should have
a fallback.

Signed-off-by: Nicholas Piggin <npig...@gmail.com>
---
 arch/powerpc/platforms/powernv/idle.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/powerpc/platforms/powernv/idle.c 
b/arch/powerpc/platforms/powernv/idle.c
index f188d84d9c59..e327e1585ddc 100644
--- a/arch/powerpc/platforms/powernv/idle.c
+++ b/arch/powerpc/platforms/powernv/idle.c
@@ -677,6 +677,8 @@ static int __init pnv_init_idle_states(void)
 
        if (supported_cpuidle_states & OPAL_PM_NAP_ENABLED)
                ppc_md.power_save = power7_idle;
+       else if (supported_cpuidle_states & OPAL_PM_STOP_INST_FAST)
+               ppc_md.power_save = power9_idle;
 
 out:
        return 0;
-- 
2.11.0