[PATCH 03/16] intel_idle: Remove redundant initialization calls.

Tim Gardner tim.gardner at canonical.com
Wed Aug 24 21:29:33 UTC 2016


From: Richard Cochran <rcochran at linutronix.de>

BugLink: http://bugs.launchpad.net/bugs/1591821

The function, intel_idle_cpuidle_driver_init, makes calls on each CPU
to auto_demotion_disable() and c1e_promotion_disable().  These calls
are redundant, as intel_idle_cpu_init() does the same calls just a bit
later on.  They are also premature, as the driver registration may yet
fail.

This patch removes the redundant code.

Signed-off-by: Richard Cochran <rcochran at linutronix.de>
Signed-off-by: Len Brown <len.brown at intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki at intel.com>
(cherry picked from commit 4a3dfb3fc0fb0fc9acd36c94b7145f9c9dd4d93a)
Signed-off-by: Tim Gardner <tim.gardner at canonical.com>
---
 drivers/idle/intel_idle.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/drivers/idle/intel_idle.c b/drivers/idle/intel_idle.c
index dfa9055..cb85c4c 100644
--- a/drivers/idle/intel_idle.c
+++ b/drivers/idle/intel_idle.c
@@ -1163,16 +1163,10 @@ static void __init intel_idle_cpuidle_driver_init(void)
 		drv->state_count += 1;
 	}
 
-	if (icpu->auto_demotion_disable_flags)
-		on_each_cpu(auto_demotion_disable, NULL, 1);
-
 	if (icpu->byt_auto_demotion_disable_flag) {
 		wrmsrl(MSR_CC6_DEMOTION_POLICY_CONFIG, 0);
 		wrmsrl(MSR_MC6_DEMOTION_POLICY_CONFIG, 0);
 	}
-
-	if (icpu->disable_promotion_to_c1e)	/* each-cpu is redundant */
-		on_each_cpu(c1e_promotion_disable, NULL, 1);
 }
 
 
-- 
2.7.4





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