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path: root/drivers/clocksource/mxs_timer.c
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Diffstat (limited to 'drivers/clocksource/mxs_timer.c')
-rw-r--r--drivers/clocksource/mxs_timer.c26
1 files changed, 17 insertions, 9 deletions
diff --git a/drivers/clocksource/mxs_timer.c b/drivers/clocksource/mxs_timer.c
index f5ce2961c..0ba0a913b 100644
--- a/drivers/clocksource/mxs_timer.c
+++ b/drivers/clocksource/mxs_timer.c
@@ -31,8 +31,6 @@
#include <linux/stmp_device.h>
#include <linux/sched_clock.h>
-#include <asm/mach/time.h>
-
/*
* There are 2 versions of the timrot on Freescale MXS-based SoCs.
* The v1 on MX23 only gets 16 bits counter, while v2 on MX28
@@ -226,10 +224,10 @@ 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 +235,12 @@ 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 +278,19 @@ 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);