diff options
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/ec.c | 3 | ||||
| -rw-r--r-- | drivers/acpi/processor_core.c | 21 |
2 files changed, 23 insertions, 1 deletions
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c index 43749c86861f..3f7935ab0cf5 100644 --- a/drivers/acpi/ec.c +++ b/drivers/acpi/ec.c @@ -886,7 +886,8 @@ int __init acpi_ec_ecdt_probe(void) printk(KERN_DEBUG PREFIX "Look up EC in DSDT\n"); status = acpi_get_devices(ec_device_ids[0].id, ec_parse_device, boot_ec, NULL); - if (ACPI_FAILURE(status)) + /* Check that acpi_get_devices actually find something */ + if (ACPI_FAILURE(status) || !boot_ec->handle) goto error; } diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c index e944aaee4e06..2afb3d2086b3 100644 --- a/drivers/acpi/processor_core.c +++ b/drivers/acpi/processor_core.c @@ -724,6 +724,25 @@ static void acpi_processor_notify(acpi_handle handle, u32 event, void *data) return; } +static int acpi_cpu_soft_notify(struct notifier_block *nfb, + unsigned long action, void *hcpu) +{ + unsigned int cpu = (unsigned long)hcpu; + struct acpi_processor *pr = processors[cpu]; + + if (action == CPU_ONLINE && pr) { + acpi_processor_ppc_has_changed(pr); + acpi_processor_cst_has_changed(pr); + acpi_processor_tstate_has_changed(pr); + } + return NOTIFY_OK; +} + +static struct notifier_block acpi_cpu_notifier = +{ + .notifier_call = acpi_cpu_soft_notify, +}; + static int acpi_processor_add(struct acpi_device *device) { struct acpi_processor *pr = NULL; @@ -987,6 +1006,7 @@ void acpi_processor_install_hotplug_notify(void) ACPI_UINT32_MAX, processor_walk_namespace_cb, &action, NULL); #endif + register_hotcpu_notifier(&acpi_cpu_notifier); } static @@ -999,6 +1019,7 @@ void acpi_processor_uninstall_hotplug_notify(void) ACPI_UINT32_MAX, processor_walk_namespace_cb, &action, NULL); #endif + unregister_hotcpu_notifier(&acpi_cpu_notifier); } /* |