DisconnectController() should never return EFI_NOT_FOUND. If EFI_DRIVER_BINDING_PROTOCOL.Stop() fails, return EFI_DEVICE_ERROR.

If the driver handle does not expose the EFI_DRIVER_BINDING_PROTOCOL return EFI_INVALID_PARAMETER.

Signed-off-by: Heinrich Schuchardt xypron.glpk@gmx.de --- lib/efi_loader/efi_boottime.c | 26 ++++++++++++++------------ 1 file changed, 14 insertions(+), 12 deletions(-)

diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c index b9bff894cb..493d906c64 100644 --- a/lib/efi_loader/efi_boottime.c +++ b/lib/efi_loader/efi_boottime.c @@ -3499,7 +3499,6 @@ static efi_status_t EFIAPI efi_disconnect_controller( efi_handle_t *child_handle_buffer = NULL; size_t number_of_children = 0; efi_status_t r; - size_t stop_count = 0; struct efi_object *efiobj;

EFI_ENTRY("%p, %p, %p", controller_handle, driver_image_handle, @@ -3539,32 +3538,35 @@ static efi_status_t EFIAPI efi_disconnect_controller( (void **)&binding_protocol, driver_image_handle, NULL, EFI_OPEN_PROTOCOL_GET_PROTOCOL)); - if (r != EFI_SUCCESS) + if (r != EFI_SUCCESS) { + r = EFI_INVALID_PARAMETER; goto out; + } /* Remove the children */ if (number_of_children) { r = EFI_CALL(binding_protocol->stop(binding_protocol, controller_handle, number_of_children, child_handle_buffer)); - if (r == EFI_SUCCESS) - ++stop_count; + if (r != EFI_SUCCESS) { + r = EFI_DEVICE_ERROR; + goto out; + } } /* Remove the driver */ - if (!child_handle) + if (!child_handle) { r = EFI_CALL(binding_protocol->stop(binding_protocol, controller_handle, 0, NULL)); - if (r == EFI_SUCCESS) - ++stop_count; + if (r != EFI_SUCCESS) { + r = EFI_DEVICE_ERROR; + goto out; + } + } EFI_CALL(efi_close_protocol(driver_image_handle, &efi_guid_driver_binding_protocol, driver_image_handle, NULL)); - - if (stop_count) - r = EFI_SUCCESS; - else - r = EFI_NOT_FOUND; + r = EFI_SUCCESS; out: if (!child_handle) free(child_handle_buffer); -- 2.20.1