OMAP3+: SR: disable interrupt by default

We will enable and disable interrupt on a need basis in the class
driver. We need to keep the IRQ disabled by default else the
forceupdate or vcbypass events could trigger events that we don't
need/expect to handle.

This is a preparation for SmartReflex AVS class drivers such as
class 2 and class 1.5 which would need to use interrupts. Existing
SmartReflex AVS class 3 driver does not require to use interrupts
and is not impacted by this change.
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>

arch/arm/mach-omap2/smartreflex.c

@@ -268,6 +268,7 @@ static int sr_late_init(struct omap_sr *sr_info)
 				0, name, (void *)sr_info);
 		if (ret)
 			goto error;
+		disable_irq(sr_info->irq);
 	}
 
 	if (pdata && pdata->enable_on_init)