From: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Date: Thu, 16 Oct 2008 23:00:08 +0000 (-0400)
Subject: cpuidle: upon BIOS bug, default to default_idle rather than polling
X-Git-Tag: firefly_0821_release~17134^2~21^2
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=89cedfefca1d446ee2598fd3bcbb23ee3802e26a;p=firefly-linux-kernel-4.4.55.git

cpuidle: upon BIOS bug, default to default_idle rather than polling

http://bugzilla.kernel.org/show_bug.cgi?id=11345

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
---

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index ed92864d1325..f8caf040650e 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -123,6 +123,9 @@ config GENERIC_TIME_VSYSCALL
 config ARCH_HAS_CPU_RELAX
 	def_bool y
 
+config ARCH_HAS_DEFAULT_IDLE
+	def_bool y
+
 config ARCH_HAS_CACHE_LINE_SIZE
 	def_bool y
 
diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c
index eb2cade562db..bb6e3b338043 100644
--- a/drivers/cpuidle/cpuidle.c
+++ b/drivers/cpuidle/cpuidle.c
@@ -56,7 +56,11 @@ static void cpuidle_idle_call(void)
 		if (pm_idle_old)
 			pm_idle_old();
 		else
+#if defined(CONFIG_ARCH_HAS_DEFAULT_IDLE)
+			default_idle();
+#else
 			local_irq_enable();
+#endif
 		return;
 	}