The controller device (hcd) does not always have the ACPI
companion assigned to it at all. We can not rely on it when
finding the ACPI companion for the root hub. Instead we need
to use the sysdev pointer here.
Signed-off-by: Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx>
---
drivers/usb/core/usb-acpi.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/usb/core/usb-acpi.c b/drivers/usb/core/usb-acpi.c
index bb1da35eb891e..fbaf5045507bb 100644
--- a/drivers/usb/core/usb-acpi.c
+++ b/drivers/usb/core/usb-acpi.c
@@ -206,7 +206,7 @@ usb_acpi_find_companion_for_device(struct usb_device *udev)
if (!udev->parent) {
/* root hub is only child (_ADR=0) under its parent, the HC */
- adev = ACPI_COMPANION(udev->dev.parent);
+ adev = ACPI_COMPANION(udev->bus->sysdev);
return acpi_find_child_device(adev, 0, false);
}
--
2.35.1
