From: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Drivers should not bind to struct acpi_device objects that
acpi_bus_trim() has been called for, so make that function
clear flags.match_driver for those objects.
If that is not done, an ACPI driver may theoretically try to operate
a device that is not physically present.
Fixes: 202317a573b2 (ACPI / scan: Add acpi_device objects for all device nodes in the namespace)
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
---
drivers/acpi/scan.c | 1 +
1 file changed, 1 insertion(+)
Index: linux-pm/drivers/acpi/scan.c
===================================================================
--- linux-pm.orig/drivers/acpi/scan.c
+++ linux-pm/drivers/acpi/scan.c
@@ -2106,6 +2106,7 @@ void acpi_bus_trim(struct acpi_device *a
list_for_each_entry_reverse(child, &adev->children, node)
acpi_bus_trim(child);
+ adev->flags.match_driver = false;
if (handler) {
if (handler->detach)
handler->detach(adev);
--
To unsubscribe from this list: send the line "unsubscribe linux-acpi" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
