Commit-ID: e1d2b9f024c519788c044ee6a5f694d69973791e
Gitweb: http://git.kernel.org/tip/e1d2b9f024c519788c044ee6a5f694d69973791e
Author: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>
AuthorDate: Mon, 6 Jun 2016 17:58:03 +0200
Committer: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>
CommitDate: Tue, 28 Jun 2016 10:19:24 +0200
clocksource/drivers/mxs: Convert init function to return error
The init function does not return any error, it prints a message, returns and
lets 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>
---
drivers/clocksource/mxs_timer.c | 26 ++++++++++++++++++--------
1 file changed, 18 insertions(+), 8 deletions(-)
diff --git a/drivers/clocksource/mxs_timer.c b/drivers/clocksource/mxs_timer.c
index f5ce296..17b9d19 100644
--- a/drivers/clocksource/mxs_timer.c
+++ b/drivers/clocksource/mxs_timer.c
@@ -226,10 +226,10 @@ static int __init mxs_clocksource_init(struct clk *timer_clk)
return 0;
}
-static void __init mxs_timer_init(struct device_node *np)
+static int __init mxs_timer_init(struct device_node *np)
{
struct clk *timer_clk;
- int irq;
+ int irq, ret;
mxs_timrot_base = of_iomap(np, 0);
WARN_ON(!mxs_timrot_base);
@@ -237,10 +237,12 @@ static void __init mxs_timer_init(struct device_node *np)
timer_clk = of_clk_get(np, 0);
if (IS_ERR(timer_clk)) {
pr_err("%s: failed to get clk\n", __func__);
- return;
+ return PTR_ERR(timer_clk);
}
- clk_prepare_enable(timer_clk);
+ ret = clk_prepare_enable(timer_clk);
+ if (ret)
+ return ret;
/*
* Initialize timers to a known state
@@ -278,11 +280,19 @@ static void __init mxs_timer_init(struct device_node *np)
mxs_timrot_base + HW_TIMROT_FIXED_COUNTn(1));
/* init and register the timer to the framework */
- mxs_clocksource_init(timer_clk);
- mxs_clockevent_init(timer_clk);
+ ret = mxs_clocksource_init(timer_clk);
+ if (ret)
+ return ret;
+
+ ret = mxs_clockevent_init(timer_clk);
+ if (ret)
+ return ret;
/* Make irqs happen */
irq = irq_of_parse_and_map(np, 0);
- setup_irq(irq, &mxs_timer_irq);
+ if (irq <= 0)
+ return -EINVAL;
+
+ return setup_irq(irq, &mxs_timer_irq);
}
-CLOCKSOURCE_OF_DECLARE(mxs, "fsl,timrot", mxs_timer_init);
+CLOCKSOURCE_OF_DECLARE_RET(mxs, "fsl,timrot", mxs_timer_init);
--
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