diff options
Diffstat (limited to 'drivers/clocksource/vf_pit_timer.c')
| -rw-r--r-- | drivers/clocksource/vf_pit_timer.c | 25 |
1 files changed, 17 insertions, 8 deletions
diff --git a/drivers/clocksource/vf_pit_timer.c b/drivers/clocksource/vf_pit_timer.c index a0e6c68536a1..55d8d8402d90 100644 --- a/drivers/clocksource/vf_pit_timer.c +++ b/drivers/clocksource/vf_pit_timer.c @@ -156,15 +156,18 @@ static int __init pit_clockevent_init(unsigned long rate, int irq) return 0; } -static void __init pit_timer_init(struct device_node *np) +static int __init pit_timer_init(struct device_node *np) { struct clk *pit_clk; void __iomem *timer_base; unsigned long clk_rate; - int irq; + int irq, ret; timer_base = of_iomap(np, 0); - BUG_ON(!timer_base); + if (!timer_base) { + pr_err("Failed to iomap"); + return -ENXIO; + } /* * PIT0 and PIT1 can be chained to build a 64-bit timer, @@ -175,12 +178,16 @@ static void __init pit_timer_init(struct device_node *np) clkevt_base = timer_base + PITn_OFFSET(3); irq = irq_of_parse_and_map(np, 0); - BUG_ON(irq <= 0); + if (irq <= 0) + return -EINVAL; pit_clk = of_clk_get(np, 0); - BUG_ON(IS_ERR(pit_clk)); + if (IS_ERR(pit_clk)) + return PTR_ERR(pit_clk); - BUG_ON(clk_prepare_enable(pit_clk)); + ret = clk_prepare_enable(pit_clk); + if (ret) + return ret; clk_rate = clk_get_rate(pit_clk); cycle_per_jiffy = clk_rate / (HZ); @@ -188,8 +195,10 @@ static void __init pit_timer_init(struct device_node *np) /* enable the pit module */ __raw_writel(~PITMCR_MDIS, timer_base + PITMCR); - BUG_ON(pit_clocksource_init(clk_rate)); + ret = pit_clocksource_init(clk_rate); + if (ret) + return ret; - pit_clockevent_init(clk_rate, irq); + return pit_clockevent_init(clk_rate, irq); } CLOCKSOURCE_OF_DECLARE(vf610, "fsl,vf610-pit", pit_timer_init); |