diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/efi_loader/efi_boottime.c | 66 |
1 files changed, 43 insertions, 23 deletions
diff --git a/lib/efi_loader/efi_boottime.c b/lib/efi_loader/efi_boottime.c index 91c923f560..b9f3124f86 100644 --- a/lib/efi_loader/efi_boottime.c +++ b/lib/efi_loader/efi_boottime.c @@ -1022,29 +1022,6 @@ out: } /* - * Reinstall protocol interface. - * - * This function implements the ReinstallProtocolInterface service. - * See the Unified Extensible Firmware Interface (UEFI) specification - * for details. - * - * @handle handle on which the protocol shall be - * reinstalled - * @protocol GUID of the protocol to be installed - * @old_interface interface to be removed - * @new_interface interface to be installed - * @return status code - */ -static efi_status_t EFIAPI efi_reinstall_protocol_interface( - efi_handle_t handle, const efi_guid_t *protocol, - void *old_interface, void *new_interface) -{ - EFI_ENTRY("%p, %pUl, %p, %p", handle, protocol, old_interface, - new_interface); - return EFI_EXIT(EFI_ACCESS_DENIED); -} - -/* * Get all drivers associated to a controller. * The allocated buffer has to be freed with free(). * @@ -2775,6 +2752,49 @@ out: } /* + * Reinstall protocol interface. + * + * This function implements the ReinstallProtocolInterface service. + * See the Unified Extensible Firmware Interface (UEFI) specification + * for details. + * + * The old interface is uninstalled. The new interface is installed. + * Drivers are connected. + * + * @handle handle on which the protocol shall be + * reinstalled + * @protocol GUID of the protocol to be installed + * @old_interface interface to be removed + * @new_interface interface to be installed + * @return status code + */ +static efi_status_t EFIAPI efi_reinstall_protocol_interface( + efi_handle_t handle, const efi_guid_t *protocol, + void *old_interface, void *new_interface) +{ + efi_status_t ret; + + EFI_ENTRY("%p, %pUl, %p, %p", handle, protocol, old_interface, + new_interface); + ret = EFI_CALL(efi_uninstall_protocol_interface(handle, protocol, + old_interface)); + if (ret != EFI_SUCCESS) + goto out; + ret = EFI_CALL(efi_install_protocol_interface(&handle, protocol, + EFI_NATIVE_INTERFACE, + new_interface)); + if (ret != EFI_SUCCESS) + goto out; + /* + * The returned status code has to be ignored. + * Do not create an error if no suitable driver for the handle exists. + */ + EFI_CALL(efi_connect_controller(handle, NULL, NULL, true)); +out: + return EFI_EXIT(ret); +} + +/* * Get all child controllers associated to a driver. * The allocated buffer has to be freed with free(). * |