86 	const struct retention_config *config = dev->config;  in retention_checksum()  local
89 	if (config->checksum_size == CHECKSUM_CRC8 ||  in retention_checksum()
90 	    config->checksum_size == CHECKSUM_CRC16 ||  in retention_checksum()
91 	    config->checksum_size == CHECKSUM_CRC32) {  in retention_checksum()
92 		size_t pos = config->offset + config->prefix_len;  in retention_checksum()
93 		size_t end = config->offset + config->size - config->checksum_size;  in retention_checksum()
101 			rc = retained_mem_read(config->parent, pos, buffer, read_size);  in retention_checksum()
107 			if (config->checksum_size == CHECKSUM_CRC8) {  in retention_checksum()
110 			} else if (config->checksum_size == CHECKSUM_CRC16) {  in retention_checksum()
113 			} else if (config->checksum_size == CHECKSUM_CRC32) {  in retention_checksum()
128 	const struct retention_config *config = dev->config;  in retention_init()  local
134 	if (!device_is_ready(config->parent)) {  in retention_init()
142 	area_size = retained_mem_size(config->parent);  in retention_init()
149 	if ((config->offset + config->size) > area_size) {  in retention_init()
152 			(config->offset + config->size), area_size);  in retention_init()
165 	const struct retention_config *config = dev->config;  in retention_size()  local
167 	return (config->size - config->reserved_size);  in retention_size()
172 	const struct retention_config *config = dev->config;  in retention_is_valid()  local
178 	if (config->prefix_len == 0 && config->checksum_size == 0) {  in retention_is_valid()
184 	if (config->prefix_len != 0) {  in retention_is_valid()
190 		while (pos < config->prefix_len) {  in retention_is_valid()
191 			uint16_t read_size = MIN((config->prefix_len - pos), sizeof(buffer));  in retention_is_valid()
193 			rc = retained_mem_read(config->parent, (config->offset + pos), buffer,  in retention_is_valid()
200 			if (memcmp(&config->prefix[pos], buffer, read_size) != 0) {  in retention_is_valid()
218 	if (config->checksum_size != 0) {  in retention_is_valid()
222 		ssize_t data_size = config->size - config->checksum_size;  in retention_is_valid()
230 		if (config->checksum_size == CHECKSUM_CRC8) {  in retention_is_valid()
233 			rc = retained_mem_read(config->parent, (config->offset + data_size),  in retention_is_valid()
236 		} else if (config->checksum_size == CHECKSUM_CRC16) {  in retention_is_valid()
239 			rc = retained_mem_read(config->parent, (config->offset + data_size),  in retention_is_valid()
242 		} else if (config->checksum_size == CHECKSUM_CRC32) {  in retention_is_valid()
243 			rc = retained_mem_read(config->parent, (config->offset + data_size),  in retention_is_valid()
269 	const struct retention_config *config = dev->config;  in retention_read()  local
272 	if (offset < 0 || ((size_t)offset + size) > (config->size - config->reserved_size)) {  in retention_read()
279 	rc = retained_mem_read(config->parent, (config->offset + config->prefix_len +  in retention_read()
289 	const struct retention_config *config = dev->config;  in retention_write()  local
298 	if (offset < 0 || ((size_t)offset + size) > (config->size - config->reserved_size)) {  in retention_write()
304 	rc = retained_mem_write(config->parent, (config->offset + config->prefix_len +  in retention_write()
315 	if (config->prefix_len != 0 && data->header_written == false) {  in retention_write()
316 		rc = retained_mem_write(config->parent, config->offset, (void *)config->prefix,  in retention_write()
317 					config->prefix_len);  in retention_write()
328 	if (config->checksum_size != 0) {  in retention_write()
338 		if (config->checksum_size == CHECKSUM_CRC8) {  in retention_write()
341 			rc = retained_mem_write(config->parent,  in retention_write()
342 					(config->offset + config->size - config->checksum_size),  in retention_write()
344 		} else if (config->checksum_size == CHECKSUM_CRC16) {  in retention_write()
347 			rc = retained_mem_write(config->parent,  in retention_write()
348 					(config->offset + config->size - config->checksum_size),  in retention_write()
350 		} else if (config->checksum_size == CHECKSUM_CRC32) {  in retention_write()
351 			rc = retained_mem_write(config->parent,  in retention_write()
352 					(config->offset + config->size - config->checksum_size),  in retention_write()
366 	const struct retention_config *config = dev->config;  in retention_clear()  local
378 	while (pos < config->size) {  in retention_clear()
379 		rc = retained_mem_write(config->parent, (config->offset + pos), buffer,  in retention_clear()
380 					MIN((config->size - pos), sizeof(buffer)));  in retention_clear()
386 		pos += MIN((config->size - pos), sizeof(buffer));  in retention_clear()