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efi_loader: fix DisconnectController() for sole child
If ChildHandle indicates the sole child of the driver, disconnect the driver. This fixes the test results for UEFI SCT 2.6 A sub-tests 5.1.3.12.43, 5.1.3.12.44, 5.1.3.12.45. Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
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@ -3523,6 +3523,7 @@ static efi_status_t EFIAPI efi_disconnect_controller(
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size_t number_of_children = 0;
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efi_status_t r;
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struct efi_object *efiobj;
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bool sole_child;
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EFI_ENTRY("%p, %p, %p", controller_handle, driver_image_handle,
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child_handle);
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@ -3545,16 +3546,18 @@ static efi_status_t EFIAPI efi_disconnect_controller(
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}
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/* Create list of child handles */
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r = efi_get_child_controllers(efiobj,
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driver_image_handle,
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&number_of_children,
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&child_handle_buffer);
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if (r != EFI_SUCCESS)
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return r;
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sole_child = (number_of_children == 1);
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if (child_handle) {
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number_of_children = 1;
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free(child_handle_buffer);
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child_handle_buffer = &child_handle;
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} else {
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r = efi_get_child_controllers(efiobj,
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driver_image_handle,
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&number_of_children,
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&child_handle_buffer);
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if (r != EFI_SUCCESS)
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return r;
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}
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/* Get the driver binding protocol */
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@ -3579,7 +3582,7 @@ static efi_status_t EFIAPI efi_disconnect_controller(
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}
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}
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/* Remove the driver */
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if (!child_handle) {
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if (!child_handle || sole_child) {
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r = EFI_CALL(binding_protocol->stop(binding_protocol,
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controller_handle,
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0, NULL));
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