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.g...@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
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