x86: apic - calibrate_APIC_clock remove redundant irq-enable-disable

Impact: cleanup

lapic_timer_setup is self-protected with local_irq_save/restore
no need to use them in caller and levt is the per-cpu variable so
no concurrent access from another cpu.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Acked-by: "Maciej W. Rozycki" <macro@linux-mips.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 0 insertions, 4 deletions

diff --git a/arch/x86/kernel/apic.c b/arch/x86/kernel/apic.c
index 04a7f960bbc0..ce90dc184139 100644
--- a/arch/x86/kernel/apic.c
+++ b/arch/x86/kernel/apic.c
@@ -672,13 +672,9 @@ static int __init calibrate_APIC_clock(void)
                 while (lapic_cal_loops <= LAPIC_CAL_LOOPS)
                         cpu_relax();
 
-                local_irq_disable();
-
                 /* Stop the lapic timer */
                 lapic_timer_setup(CLOCK_EVT_MODE_SHUTDOWN, levt);
 
-                local_irq_enable();
-
                 /* Jiffies delta */
                 deltaj = lapic_cal_j2 - lapic_cal_j1;
                 apic_printk(APIC_VERBOSE, "... jiffies delta = %lu\n", deltaj);