Commit c381fc3a authored by Rafael J. Wysocki's avatar Rafael J. Wysocki

ACPI / scan: Avoid enumerating devices more than once

acpi_bus_attach() does not check the visited flag for devices that
have been enumerated already and some of them may be enumerated
for multiple times as a result, because some callers of
acpi_bus_scan() don't check the visited flag either.

For this reason, modify acpi_bus_attach() to check the visited flag
and avoid enumerating devices that have already been enumerated.
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: default avatarMika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: default avatarJoey Lee <jlee@suse.com>
parent f5beabfe
...@@ -1840,6 +1840,8 @@ static void acpi_bus_attach(struct acpi_device *device) ...@@ -1840,6 +1840,8 @@ static void acpi_bus_attach(struct acpi_device *device)
device->flags.power_manageable = 0; device->flags.power_manageable = 0;
device->flags.initialized = true; device->flags.initialized = true;
} else if (device->flags.visited) {
goto ok;
} }
ret = acpi_scan_attach_handler(device); ret = acpi_scan_attach_handler(device);
......
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