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Diffstat (limited to 'drivers/clocksource/arm_arch_timer.c')
-rw-r--r--drivers/clocksource/arm_arch_timer.c33
1 files changed, 15 insertions, 18 deletions
diff --git a/drivers/clocksource/arm_arch_timer.c b/drivers/clocksource/arm_arch_timer.c
index d7ad425ab9b..a2b25418978 100644
--- a/drivers/clocksource/arm_arch_timer.c
+++ b/drivers/clocksource/arm_arch_timer.c
@@ -248,14 +248,16 @@ static void __cpuinit arch_timer_stop(struct clock_event_device *clk)
static int __cpuinit arch_timer_cpu_notify(struct notifier_block *self,
unsigned long action, void *hcpu)
{
- struct clock_event_device *evt = this_cpu_ptr(arch_timer_evt);
-
+ /*
+ * Grab cpu pointer in each case to avoid spurious
+ * preemptible warnings
+ */
switch (action & ~CPU_TASKS_FROZEN) {
case CPU_STARTING:
- arch_timer_setup(evt);
+ arch_timer_setup(this_cpu_ptr(arch_timer_evt));
break;
case CPU_DYING:
- arch_timer_stop(evt);
+ arch_timer_stop(this_cpu_ptr(arch_timer_evt));
break;
}
@@ -337,22 +339,14 @@ out:
return err;
}
-static const struct of_device_id arch_timer_of_match[] __initconst = {
- { .compatible = "arm,armv7-timer", },
- { .compatible = "arm,armv8-timer", },
- {},
-};
-
-int __init arch_timer_init(void)
+static void __init arch_timer_init(struct device_node *np)
{
- struct device_node *np;
u32 freq;
int i;
- np = of_find_matching_node(NULL, arch_timer_of_match);
- if (!np) {
- pr_err("arch_timer: can't find DT node\n");
- return -ENODEV;
+ if (arch_timer_get_rate()) {
+ pr_warn("arch_timer: multiple nodes in dt, skipping\n");
+ return;
}
/* Try to determine the frequency from the device tree or CNTFRQ */
@@ -378,7 +372,7 @@ int __init arch_timer_init(void)
if (!arch_timer_ppi[PHYS_SECURE_PPI] ||
!arch_timer_ppi[PHYS_NONSECURE_PPI]) {
pr_warn("arch_timer: No interrupt available, giving up\n");
- return -EINVAL;
+ return;
}
}
@@ -387,5 +381,8 @@ int __init arch_timer_init(void)
else
arch_timer_read_counter = arch_counter_get_cntpct;
- return arch_timer_register();
+ arch_timer_register();
+ arch_timer_arch_init();
}
+CLOCKSOURCE_OF_DECLARE(armv7_arch_timer, "arm,armv7-timer", arch_timer_init);
+CLOCKSOURCE_OF_DECLARE(armv8_arch_timer, "arm,armv8-timer", arch_timer_init);