lkml.org 
[lkml]   [2009]   [Sep]   [30]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH] CPUidle: always return with interrupts enabled
Date
In the case where cpuidle_idle_call() returns before changing state
due to a need_resched(), it was returning with IRQs disabled.

This patch ensures IRQs are (re)enabled before returning.

Reported-by: Hemanth V <hemanthv@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
---
drivers/cpuidle/cpuidle.c | 5 ++++-
1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c
index ad41f19..12fdd39 100644
--- a/drivers/cpuidle/cpuidle.c
+++ b/drivers/cpuidle/cpuidle.c
@@ -76,8 +76,11 @@ static void cpuidle_idle_call(void)
#endif
/* ask the governor for the next state */
next_state = cpuidle_curr_governor->select(dev);
- if (need_resched())
+ if (need_resched()) {
+ local_irq_enable();
return;
+ }
+
target_state = &dev->states[next_state];

/* enter the state and update stats */
--
1.6.4.3


\
 
 \ /
  Last update: 2009-09-30 19:39    [W:0.070 / U:1.036 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site