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Subject[PATCH V2 10/63] clocksource/drivers/clps711x: Convert init function to return error
Date
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/clps711x-timer.c | 12 +++++-------
1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/drivers/clocksource/clps711x-timer.c b/drivers/clocksource/clps711x-timer.c
index cdd86e3..3b66198 100644
--- a/drivers/clocksource/clps711x-timer.c
+++ b/drivers/clocksource/clps711x-timer.c
@@ -104,7 +104,7 @@ void __init clps711x_clksrc_init(void __iomem *tc1_base, void __iomem *tc2_base,
}

#ifdef CONFIG_CLKSRC_OF
-static void __init clps711x_timer_init(struct device_node *np)
+static int __init clps711x_timer_init(struct device_node *np)
{
unsigned int irq = irq_of_parse_and_map(np, 0);
struct clk *clock = of_clk_get(np, 0);
@@ -112,14 +112,12 @@ static void __init clps711x_timer_init(struct device_node *np)

switch (of_alias_get_id(np, "timer")) {
case CLPS711X_CLKSRC_CLOCKSOURCE:
- BUG_ON(_clps711x_clksrc_init(clock, base));
- break;
+ return _clps711x_clksrc_init(clock, base);
case CLPS711X_CLKSRC_CLOCKEVENT:
- BUG_ON(_clps711x_clkevt_init(clock, base, irq));
- break;
+ return _clps711x_clkevt_init(clock, base, irq);
default:
- break;
+ return -EINVAL;
}
}
-CLOCKSOURCE_OF_DECLARE(clps711x, "cirrus,clps711x-timer", clps711x_timer_init);
+CLOCKSOURCE_OF_DECLARE_RET(clps711x, "cirrus,clps711x-timer", clps711x_timer_init);
#endif
--
1.9.1
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