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

From: Nicholas Piggin <[email-masked]>
Date: Fri, 9 Jun 2017 01:51:02 +1000

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 <[email-masked]>
---
 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 8562916b8cf7..78b4755b7947 100644
--- a/arch/powerpc/platforms/powernv/idle.c
+++ b/arch/powerpc/platforms/powernv/idle.c
@@ -649,6 +649,8 @@ 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