1 // SPDX-License-Identifier: GPL-2.0
4  * for use with hp-bioscfg driver.
6  *  Copyright (c) 2022 Hewlett-Packard Inc.
14  * were introduced that exceeds 128-byte data size.  Changes to handle
34  *	-ENODEV if device is not found
35  *	-EINVAL if the instance of 'Setup Admin' password is not found.
36  *	-ENOMEM unable to allocate memory
44 	int  buffer_size, instance, ret;  in hp_set_attribute()  local
49 	instance = hp_get_password_instance_for_type(SETUP_PASSWD);  in hp_set_attribute()
50 	if (instance < 0) {  in hp_set_attribute()
51 		ret = -EINVAL;  in hp_set_attribute()
59 		auth_token_choice = bioscfg_drv.password_data[instance].current_password;  in hp_set_attribute()
68 		ret = -ENOMEM;  in hp_set_attribute()
76 		ret = -EINVAL;  in hp_set_attribute()
82 		ret = -EINVAL;  in hp_set_attribute()
109  *         -EINVAL if the query was not successful at all
110  *         -EINVAL if the output buffer size exceeds buffersize
136 		return -ENOMEM;  in hp_wmi_perform_query()
142 	args->signature = 0x55434553;  in hp_wmi_perform_query()
143 	args->command = command;  in hp_wmi_perform_query()
144 	args->commandtype = query;  in hp_wmi_perform_query()
145 	args->datasize = insize;  in hp_wmi_perform_query()
146 	memcpy(args->data, buffer, flex_array_size(args, data, insize));  in hp_wmi_perform_query()
154 		ret = -EINVAL;  in hp_wmi_perform_query()
158 	if (obj->type != ACPI_TYPE_BUFFER ||  in hp_wmi_perform_query()
159 	    obj->buffer.length < sizeof(*bios_return)) {  in hp_wmi_perform_query()
161 		ret = -EINVAL;  in hp_wmi_perform_query()
165 	bios_return = (struct bios_return *)obj->buffer.pointer;  in hp_wmi_perform_query()
166 	ret = bios_return->return_code;  in hp_wmi_perform_query()
177 	actual_outsize = min_t(u32, outsize, obj->buffer.length - sizeof(*bios_return));  in hp_wmi_perform_query()
178 	memcpy_and_pad(buffer, outsize, obj->buffer.pointer + sizeof(*bios_return),  in hp_wmi_perform_query()
197  * hp_ascii_to_utf16_unicode -  Convert ascii string to UTF-16 unicode
199  * BIOS supports UTF-16 characters that are 2 bytes long.  No variable
200  * multi-byte language supported.
237  * hp_wmi_set_bios_setting - Set setting's value in BIOS
243  *		-ENOMEM unable to allocate memory
244  *		-EINVAL buffer not allocated or too small
257 		return -EINVAL;  in hp_wmi_set_bios_setting()
259 	if (obj->type != ACPI_TYPE_INTEGER) {  in hp_wmi_set_bios_setting()
260 		ret = -EINVAL;  in hp_wmi_set_bios_setting()
264 	ret = obj->integer.value;  in hp_wmi_set_bios_setting()