clocksource/drivers/imx-gpt: Remove unnecessary irq protection

shutdown and oneshot are already protected against irq interruptions
Signed-off-by: Clément Péron <peron.clem@gmail.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>

drivers/clocksource/timer-imx-gpt.c

@@ -202,15 +202,8 @@ static int v2_set_next_event(unsigned long evt,
 static int mxc_shutdown(struct clock_event_device *ced)
 {
 	struct imx_timer *imxtm = to_imx_timer(ced);
-	unsigned long flags;
 	u32 tcn;
 
-	/*
-	 * The timer interrupt generation is disabled at least
-	 * for enough time to call mxc_set_next_event()
-	 */
-	local_irq_save(flags);
-
 	/* Disable interrupt in GPT module */
 	imxtm->gpt->gpt_irq_disable(imxtm);
 
@@ -225,21 +218,12 @@ static int mxc_shutdown(struct clock_event_device *ced)
 	printk(KERN_INFO "%s: changing mode\n", __func__);
 #endif /* DEBUG */
 
-	local_irq_restore(flags);
-
 	return 0;
 }
 
 static int mxc_set_oneshot(struct clock_event_device *ced)
 {
 	struct imx_timer *imxtm = to_imx_timer(ced);
-	unsigned long flags;
-
-	/*
-	 * The timer interrupt generation is disabled at least
-	 * for enough time to call mxc_set_next_event()
-	 */
-	local_irq_save(flags);
 
 	/* Disable interrupt in GPT module */
 	imxtm->gpt->gpt_irq_disable(imxtm);
@@ -264,7 +248,6 @@ static int mxc_set_oneshot(struct clock_event_device *ced)
 	 * mode switching
 	 */
 	imxtm->gpt->gpt_irq_enable(imxtm);
-	local_irq_restore(flags);
 
 	return 0;
 }