diff options
| -rw-r--r-- | drivers/clocksource/bcm2835_timer.c | 40 |
1 files changed, 27 insertions, 13 deletions
diff --git a/drivers/clocksource/bcm2835_timer.c b/drivers/clocksource/bcm2835_timer.c index 6f2822928963..2dcf896b5381 100644 --- a/drivers/clocksource/bcm2835_timer.c +++ b/drivers/clocksource/bcm2835_timer.c @@ -80,19 +80,24 @@ static irqreturn_t bcm2835_time_interrupt(int irq, void *dev_id) } } -static void __init bcm2835_timer_init(struct device_node *node) +static int __init bcm2835_timer_init(struct device_node *node) { void __iomem *base; u32 freq; - int irq; + int irq, ret; struct bcm2835_timer *timer; base = of_iomap(node, 0); - if (!base) - panic("Can't remap registers"); + if (!base) { + pr_err("Can't remap registers"); + return -ENXIO; + } - if (of_property_read_u32(node, "clock-frequency", &freq)) - panic("Can't read clock-frequency"); + ret = of_property_read_u32(node, "clock-frequency", &freq); + if (ret) { + pr_err("Can't read clock-frequency"); + return ret; + } system_clock = base + REG_COUNTER_LO; sched_clock_register(bcm2835_sched_read, 32, freq); @@ -101,12 +106,16 @@ static void __init bcm2835_timer_init(struct device_node *node) freq, 300, 32, clocksource_mmio_readl_up); irq = irq_of_parse_and_map(node, DEFAULT_TIMER); - if (irq <= 0) - panic("Can't parse IRQ"); + if (irq <= 0) { + pr_err("Can't parse IRQ"); + return -EINVAL; + } timer = kzalloc(sizeof(*timer), GFP_KERNEL); - if (!timer) - panic("Can't allocate timer struct\n"); + if (!timer) { + pr_err("Can't allocate timer struct\n"); + return -ENOMEM; + } timer->control = base + REG_CONTROL; timer->compare = base + REG_COMPARE(DEFAULT_TIMER); @@ -121,12 +130,17 @@ static void __init bcm2835_timer_init(struct device_node *node) timer->act.dev_id = timer; timer->act.handler = bcm2835_time_interrupt; - if (setup_irq(irq, &timer->act)) - panic("Can't set up timer IRQ\n"); + ret = setup_irq(irq, &timer->act); + if (ret) { + pr_err("Can't set up timer IRQ\n"); + return ret; + } clockevents_config_and_register(&timer->evt, freq, 0xf, 0xffffffff); pr_info("bcm2835: system timer (irq = %d)\n", irq); + + return 0; } -CLOCKSOURCE_OF_DECLARE(bcm2835, "brcm,bcm2835-system-timer", +CLOCKSOURCE_OF_DECLARE_RET(bcm2835, "brcm,bcm2835-system-timer", bcm2835_timer_init); |