From: Nicholas Piggin <npiggin@gmail.com>
Date: Thu, 16 Nov 2017 16:00:51 +0000 (+1000)
Subject: cpuidle/powernv: avoid double irq enable coming out of idle
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=f1343d044629f11e7d63ef1a07edb1db585302e0;p=linux.git

cpuidle/powernv: avoid double irq enable coming out of idle

Since e1689795a7 ("cpuidle: Add common time keeping and irq enabling"),
cpuidle drivers are expected to return from ->enter with irqs disabled.

Update the cpuidle-powernv snooze loop to disable irqs before returning.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
---

diff --git a/drivers/cpuidle/cpuidle-powernv.c b/drivers/cpuidle/cpuidle-powernv.c
index e06605b21841a..1a8234e706bc7 100644
--- a/drivers/cpuidle/cpuidle-powernv.c
+++ b/drivers/cpuidle/cpuidle-powernv.c
@@ -76,6 +76,8 @@ static int snooze_loop(struct cpuidle_device *dev,
 	ppc64_runlatch_on();
 	clear_thread_flag(TIF_POLLING_NRFLAG);
 
+	local_irq_disable();
+
 	return index;
 }