Commit-ID: 595197743ee63e4ea0e20cccaf455bf5fd3fd1c9
Gitweb: http://git.kernel.org/tip/595197743ee63e4ea0e20cccaf455bf5fd3fd1c9
Author: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>
AuthorDate: Thu, 2 Jun 2016 19:44:04 +0200
Committer: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>
CommitDate: Tue, 28 Jun 2016 10:19:21 +0200
clocksource/drivers/bcm_kona: Convert init function to return error
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@xxxxxxxxxx>
Acked-by: Ray Jui <ray.jui@xxxxxxxxxxxx>
---
drivers/clocksource/bcm_kona_timer.c | 15 ++++++---------
1 file changed, 6 insertions(+), 9 deletions(-)
diff --git a/drivers/clocksource/bcm_kona_timer.c b/drivers/clocksource/bcm_kona_timer.c
index e717e87..c251aa6 100644
--- a/drivers/clocksource/bcm_kona_timer.c
+++ b/drivers/clocksource/bcm_kona_timer.c
@@ -163,16 +163,11 @@ static struct irqaction kona_timer_irq = {
.handler = kona_timer_interrupt,
};
-static void __init kona_timer_init(struct device_node *node)
+static int __init kona_timer_init(struct device_node *node)
{
u32 freq;
struct clk *external_clk;
- if (!of_device_is_available(node)) {
- pr_info("Kona Timer v1 marked as disabled in device tree\n");
- return;
- }
-
external_clk = of_clk_get_by_name(node, NULL);
if (!IS_ERR(external_clk)) {
@@ -182,7 +177,7 @@ static void __init kona_timer_init(struct device_node *node)
arch_timer_rate = freq;
} else {
pr_err("Kona Timer v1 unable to determine clock-frequency");
- return;
+ return -EINVAL;
}
/* Setup IRQ numbers */
@@ -196,11 +191,13 @@ static void __init kona_timer_init(struct device_node *node)
kona_timer_clockevents_init();
setup_irq(timers.tmr_irq, &kona_timer_irq);
kona_timer_set_next_event((arch_timer_rate / HZ), NULL);
+
+ return 0;
}
-CLOCKSOURCE_OF_DECLARE(brcm_kona, "brcm,kona-timer", kona_timer_init);
+CLOCKSOURCE_OF_DECLARE_RET(brcm_kona, "brcm,kona-timer", kona_timer_init);
/*
* bcm,kona-timer is deprecated by brcm,kona-timer
* being kept here for driver compatibility
*/
-CLOCKSOURCE_OF_DECLARE(bcm_kona, "bcm,kona-timer", kona_timer_init);
+CLOCKSOURCE_OF_DECLARE_RET(bcm_kona, "bcm,kona-timer", kona_timer_init);
--
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