linux-kernel - [PATCH v4 07/10] powerpc/powernv: set power_save func after the idle states are initialized

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Message-Id: <1464095714-48772-8-git-send-email-shreyas@linux.vnet.ibm.com>
Date:	Tue, 24 May 2016 18:45:11 +0530
From:	"Shreyas B. Prabhu" <shreyas@...ux.vnet.ibm.com>
To:	mpe@...erman.id.au
Cc:	linuxppc-dev@...ts.ozlabs.org, paulus@...abs.org,
	linux-kernel@...r.kernel.org, mikey@...ling.org,
	ego@...ux.vnet.ibm.com, maddy@...ux.vnet.ibm.com,
	"Shreyas B. Prabhu" <shreyas@...ux.vnet.ibm.com>
Subject: [PATCH v4 07/10] powerpc/powernv: set power_save func after the idle states are initialized

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 <ego@...ux.vnet.ibm.com>
Signed-off-by: Shreyas B. Prabhu <shreyas@...ux.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,
-- 
2.4.11