Merge branch 'clockevents/3.15-fixes' of git://git.linaro.org/people/…

…daniel.lezcano/linux into timers/urgent

clockevent fixes for 3.15 from Daniel Lezcano:
 * Lorenzo Pieralizi fixed an issue with the arch_arm_timer where the
   C3STOP flag for all the arch can cause some trouble by setting the
   flag only if the power domain is not always on
 * Alexander Shiyan fixed a compilation by changing the init function
   to the right prototype

Documentation/devicetree/bindings/arm/arch_timer.txt

@@ -19,6 +19,9 @@ to deliver its interrupts via SPIs.
 
 - clock-frequency : The frequency of the main counter, in Hz. Optional.
 
+- always-on : a boolean property. If present, the timer is powered through an
+  always-on power domain, therefore it never loses context.
+
 Example:
 
 	timer {

drivers/clocksource/arm_arch_timer.c

@@ -66,6 +66,7 @@ static int arch_timer_ppi[MAX_TIMER_PPI];
 static struct clock_event_device __percpu *arch_timer_evt;
 
 static bool arch_timer_use_virtual = true;
+static bool arch_timer_c3stop;
 static bool arch_timer_mem_use_virtual;
 
 /*
@@ -263,7 +264,8 @@ static void __arch_timer_setup(unsigned type,
 	clk->features = CLOCK_EVT_FEAT_ONESHOT;
 
 	if (type == ARCH_CP15_TIMER) {
-		clk->features |= CLOCK_EVT_FEAT_C3STOP;
+		if (arch_timer_c3stop)
+			clk->features |= CLOCK_EVT_FEAT_C3STOP;
 		clk->name = "arch_sys_timer";
 		clk->rating = 450;
 		clk->cpumask = cpumask_of(smp_processor_id());
@@ -665,6 +667,8 @@ static void __init arch_timer_init(struct device_node *np)
 		}
 	}
 
+	arch_timer_c3stop = !of_property_read_bool(np, "always-on");
+
 	arch_timer_register();
 	arch_timer_common_init();
 }

drivers/clocksource/zevio-timer.c

@@ -212,4 +212,9 @@ static int __init zevio_timer_add(struct device_node *node)
 	return ret;
 }
 
-CLOCKSOURCE_OF_DECLARE(zevio_timer, "lsi,zevio-timer", zevio_timer_add);
+static void __init zevio_timer_init(struct device_node *node)
+{
+	BUG_ON(zevio_timer_add(node));
+}
+
+CLOCKSOURCE_OF_DECLARE(zevio_timer, "lsi,zevio-timer", zevio_timer_init);