diff options
Diffstat (limited to 'drivers/clocksource/mxs_timer.c')
| -rw-r--r-- | drivers/clocksource/mxs_timer.c | 26 |
1 files changed, 17 insertions, 9 deletions
diff --git a/drivers/clocksource/mxs_timer.c b/drivers/clocksource/mxs_timer.c index f5ce296..0ba0a91 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); |