If DisconnectController() is called and no driver is managing ControllerHandle, return EFI_SUCCESS.
UEFI SCT II 2017, 3.3.12 DisconnectController(), 5.1.3.12.4 - 5.1.3.12.6
Signed-off-by: Heinrich Schuchardt xypron.glpk@gmx.de --- lib/efi_loader/efi_boottime.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c index 5c6bc691a5..5714deca70 100644 --- a/lib/efi_loader/efi_boottime.c +++ b/lib/efi_loader/efi_boottime.c @@ -1153,11 +1153,15 @@ static efi_status_t efi_get_drivers(efi_handle_t handle, ++count; } } + *number_of_drivers = 0; + if (!count) { + *driver_handle_buffer = NULL; + return EFI_SUCCESS; + } /* * Create buffer. In case of duplicate driver assignments the buffer * will be too large. But that does not harm. */ - *number_of_drivers = 0; *driver_handle_buffer = calloc(count, sizeof(efi_handle_t)); if (!*driver_handle_buffer) return EFI_OUT_OF_RESOURCES; @@ -1213,7 +1217,8 @@ static efi_status_t efi_disconnect_all_drivers &driver_handle_buffer); if (ret != EFI_SUCCESS) return ret; - + if (!number_of_drivers) + return EFI_SUCCESS; ret = EFI_NOT_FOUND; while (number_of_drivers) { r = EFI_CALL(efi_disconnect_controller( -- 2.20.1