[PATCH] x86: remove redundant local_irq_enable() after cpuidle_idle_call()

From: Li Wang
Date: Tue Aug 13 2013 - 22:21:04 EST


When cpuidle_idle_call() return 0, it shows that linux system is using
idle framwork driver. Now, local irq has already been enabled in
cpuidle_idle_call(). So, it need not enable local irq again, when return 0.

The code is introduced by commit:
97a5b81fa4d3a11dcdf224befc577f2e0abadc0b ("x86: Fix idle consolidation fallout")
In that defect, it does not use idle framework driver, just call amd_e400_idle().
That problem is that amd_e400_idle() does not enable irq.

Signed-off-by: Li Wang <li.wang@xxxxxxxxxxxxx>
---
arch/x86/kernel/process.c | 2 --
1 file changed, 2 deletions(-)

diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c
index 83369e5..cb55ee4 100644
--- a/arch/x86/kernel/process.c
+++ b/arch/x86/kernel/process.c
@@ -300,8 +300,6 @@ void arch_cpu_idle(void)
{
if (cpuidle_idle_call())
x86_idle();
- else
- local_irq_enable();
}

/*
--
1.7.9.5

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