@@ -238,7 +238,7 @@ static struct notifier_block sirfsoc_cpu_nb = {
.notifier_call = sirfsoc_cpu_notify,
};
-static void __init sirfsoc_clockevent_init(void)
+static int __init sirfsoc_clockevent_init(void)
{
sirfsoc_clockevent = alloc_percpu(struct clock_event_device);
BUG_ON(!sirfsoc_clockevent);
@@ -246,11 +246,11 @@ static void __init sirfsoc_clockevent_init(void)
BUG_ON(register_cpu_notifier(&sirfsoc_cpu_nb));
/* Immediately configure the timer on the boot CPU */
- sirfsoc_local_timer_setup(this_cpu_ptr(sirfsoc_clockevent));
+ return sirfsoc_local_timer_setup(this_cpu_ptr(sirfsoc_clockevent));
}
/* initialize the kernel jiffy timer source */
-static void __init sirfsoc_atlas7_timer_init(struct device_node *np)
+static int __init sirfsoc_atlas7_timer_init(struct device_node *np)
{
struct clk *clk;
@@ -279,23 +279,29 @@ static void __init sirfsoc_atlas7_timer_init(struct device_node *np)
BUG_ON(clocksource_register_hz(&sirfsoc_clocksource, atlas7_timer_rate));
- sirfsoc_clockevent_init();
+ return sirfsoc_clockevent_init();
}
-static void __init sirfsoc_of_timer_init(struct device_node *np)
+static int __init sirfsoc_of_timer_init(struct device_node *np)
{
sirfsoc_timer_base = of_iomap(np, 0);
- if (!sirfsoc_timer_base)
- panic("unable to map timer cpu registers\n");
+ if (!sirfsoc_timer_base) {
+ pr_err("unable to map timer cpu registers\n");
+ return -ENXIO;
+ }
sirfsoc_timer_irq.irq = irq_of_parse_and_map(np, 0);
- if (!sirfsoc_timer_irq.irq)
- panic("No irq passed for timer0 via DT\n");
+ if (!sirfsoc_timer_irq.irq) {
+ pr_err("No irq passed for timer0 via DT\n");
+ return -EINVAL;
+ }
sirfsoc_timer1_irq.irq = irq_of_parse_and_map(np, 1);
- if (!sirfsoc_timer1_irq.irq)
- panic("No irq passed for timer1 via DT\n");
+ if (!sirfsoc_timer1_irq.irq) {
+ pr_err("No irq passed for timer1 via DT\n");
+ return -EINVAL;
+ }
- sirfsoc_atlas7_timer_init(np);
+ return sirfsoc_atlas7_timer_init(np);
}
-CLOCKSOURCE_OF_DECLARE(sirfsoc_atlas7_timer, "sirf,atlas7-tick", sirfsoc_of_timer_init);
+CLOCKSOURCE_OF_DECLARE_RET(sirfsoc_atlas7_timer, "sirf,atlas7-tick", sirfsoc_of_timer_init);
The init functions do not return any error. They behave as the following: - panic, thus leading to a kernel crash while another timer may work and make the system boot up correctly or - print an error and let the caller unaware if the state of the system Change that by converting the init functions to return an error conforming to the CLOCKSOURCE_OF_RET prototype. Proper error handling (rollback, errno value) will be changed later case by case, thus this change just return back an error or success in the init function. Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> --- drivers/clocksource/timer-atlas7.c | 32 +++++++++++++++++++------------- 1 file changed, 19 insertions(+), 13 deletions(-) -- 1.9.1