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path: root/drivers/clocksource/qcom-timer.c
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Diffstat (limited to 'drivers/clocksource/qcom-timer.c')
-rw-r--r--drivers/clocksource/qcom-timer.c23
1 files changed, 13 insertions, 10 deletions
diff --git a/drivers/clocksource/qcom-timer.c b/drivers/clocksource/qcom-timer.c
index f8e09f923651..662576339049 100644
--- a/drivers/clocksource/qcom-timer.c
+++ b/drivers/clocksource/qcom-timer.c
@@ -178,7 +178,7 @@ static struct delay_timer msm_delay_timer = {
.read_current_timer = msm_read_current_timer,
};
-static void __init msm_timer_init(u32 dgt_hz, int sched_bits, int irq,
+static int __init msm_timer_init(u32 dgt_hz, int sched_bits, int irq,
bool percpu)
{
struct clocksource *cs = &msm_clocksource;
@@ -218,12 +218,14 @@ err:
sched_clock_register(msm_sched_clock_read, sched_bits, dgt_hz);
msm_delay_timer.freq = dgt_hz;
register_current_timer_delay(&msm_delay_timer);
+
+ return res;
}
-static void __init msm_dt_timer_init(struct device_node *np)
+static int __init msm_dt_timer_init(struct device_node *np)
{
u32 freq;
- int irq;
+ int irq, ret;
struct resource res;
u32 percpu_offset;
void __iomem *base;
@@ -232,34 +234,35 @@ static void __init msm_dt_timer_init(struct device_node *np)
base = of_iomap(np, 0);
if (!base) {
pr_err("Failed to map event base\n");
- return;
+ return -ENXIO;
}
/* We use GPT0 for the clockevent */
irq = irq_of_parse_and_map(np, 1);
if (irq <= 0) {
pr_err("Can't get irq\n");
- return;
+ return -EINVAL;
}
/* We use CPU0's DGT for the clocksource */
if (of_property_read_u32(np, "cpu-offset", &percpu_offset))
percpu_offset = 0;
- if (of_address_to_resource(np, 0, &res)) {
+ ret = of_address_to_resource(np, 0, &res);
+ if (ret) {
pr_err("Failed to parse DGT resource\n");
- return;
+ return ret;
}
cpu0_base = ioremap(res.start + percpu_offset, resource_size(&res));
if (!cpu0_base) {
pr_err("Failed to map source base\n");
- return;
+ return -EINVAL;
}
if (of_property_read_u32(np, "clock-frequency", &freq)) {
pr_err("Unknown frequency\n");
- return;
+ return -EINVAL;
}
event_base = base + 0x4;
@@ -268,7 +271,7 @@ static void __init msm_dt_timer_init(struct device_node *np)
freq /= 4;
writel_relaxed(DGT_CLK_CTL_DIV_4, source_base + DGT_CLK_CTL);
- msm_timer_init(freq, 32, irq, !!percpu_offset);
+ return msm_timer_init(freq, 32, irq, !!percpu_offset);
}
CLOCKSOURCE_OF_DECLARE(kpss_timer, "qcom,kpss-timer", msm_dt_timer_init);
CLOCKSOURCE_OF_DECLARE(scss_timer, "qcom,scss-timer", msm_dt_timer_init);