diff options
Diffstat (limited to 'sys/dev/acpica/acpi.c')
| -rw-r--r-- | sys/dev/acpica/acpi.c | 30 |
1 files changed, 29 insertions, 1 deletions
diff --git a/sys/dev/acpica/acpi.c b/sys/dev/acpica/acpi.c index 55b0dd2..08a967f 100644 --- a/sys/dev/acpica/acpi.c +++ b/sys/dev/acpica/acpi.c @@ -100,6 +100,7 @@ int acpi_quirks; /* Supported sleep states. */ static BOOLEAN acpi_sleep_states[ACPI_S_STATE_COUNT]; +static void acpi_lookup(void *arg, const char *name, device_t *dev); static int acpi_modevent(struct module *mod, int event, void *junk); static int acpi_probe(device_t dev); static int acpi_attach(device_t dev); @@ -670,8 +671,10 @@ acpi_attach(device_t dev) /* Register ACPI again to pass the correct argument of pm_func. */ power_pm_register(POWER_PM_TYPE_ACPI, acpi_pm_func, sc); - if (!acpi_disabled("bus")) + if (!acpi_disabled("bus")) { + EVENTHANDLER_REGISTER(dev_lookup, acpi_lookup, NULL, 1000); acpi_probe_children(dev); + } /* Update all GPEs and enable runtime GPEs. */ status = AcpiUpdateAllGpes(); @@ -3404,6 +3407,31 @@ acpi_disabled(char *subsys) return (0); } +static void +acpi_lookup(void *arg, const char *name, device_t *dev) +{ + ACPI_HANDLE handle; + + if (*dev != NULL) + return; + + /* + * Allow any handle name that is specified as an absolute path and + * starts with '\'. We could restrict this to \_SB and friends, + * but see acpi_probe_children() for notes on why we scan the entire + * namespace for devices. + * + * XXX: The pathname argument to AcpiGetHandle() should be fixed to + * be const. + */ + if (name[0] != '\\') + return; + if (ACPI_FAILURE(AcpiGetHandle(ACPI_ROOT_OBJECT, __DECONST(char *, name), + &handle))) + return; + *dev = acpi_get_device(handle); +} + /* * Control interface. * |
