111 static int spl_read_ab_metadata(struct blk_desc *dev_desc, AvbABData *ab_data,  in spl_read_ab_metadata()  argument
118 	if (!dev_desc || !partition || !ab_data)  in spl_read_ab_metadata()
132 	memcpy(ab_data, temp, sizeof(AvbABData));  in spl_read_ab_metadata()
137 static int spl_write_ab_metadata(struct blk_desc *dev_desc, AvbABData *ab_data,  in spl_write_ab_metadata()  argument
144 	if (!dev_desc || !partition || !ab_data)  in spl_write_ab_metadata()
150 	memcpy(temp, ab_data, sizeof(AvbABData));  in spl_write_ab_metadata()
162 static int spl_ab_data_write(struct blk_desc *dev_desc, AvbABData *ab_data,  in spl_ab_data_write()  argument
167 	spl_ab_data_update_crc_and_byteswap(ab_data, &serialized);  in spl_ab_data_write()
172 static int spl_ab_data_read(struct blk_desc *dev_desc, AvbABData *ab_data,  in spl_ab_data_read()  argument
182 	if (!spl_ab_data_verify_and_byteswap(&serialized, ab_data)) {  in spl_ab_data_read()
185 		spl_ab_data_init(ab_data);  in spl_ab_data_read()
186 		spl_ab_data_write(dev_desc, ab_data, partition);  in spl_ab_data_read()
198 static int spl_get_lastboot(AvbABData *ab_data)  in spl_get_lastboot()  argument
200 	return ab_data->last_boot;  in spl_get_lastboot()
207 	AvbABData ab_data;  in spl_get_current_slot()  local
210 	ret = spl_ab_data_read(dev_desc, &ab_data, partition);  in spl_get_current_slot()
214 	if (spl_slot_is_bootable(&ab_data.slots[0]) &&  in spl_get_current_slot()
215 	    spl_slot_is_bootable(&ab_data.slots[1])) {  in spl_get_current_slot()
216 		if (ab_data.slots[1].priority > ab_data.slots[0].priority)  in spl_get_current_slot()
220 	} else if (spl_slot_is_bootable(&ab_data.slots[0])) {  in spl_get_current_slot()
222 	} else if (spl_slot_is_bootable(&ab_data.slots[1])) {  in spl_get_current_slot()
226 		if (spl_get_lastboot(&ab_data) == 0) {  in spl_get_current_slot()
229 		} else if (spl_get_lastboot(&ab_data) == 1) {  in spl_get_current_slot()
246 		       ab_data.slots[slot_index_to_boot].successful_boot,  in spl_get_current_slot()
247 		       ab_data.slots[slot_index_to_boot].tries_remaining);  in spl_get_current_slot()
278 					AvbABData *ab_data,  in spl_save_metadata_if_changed()  argument
281 	if (safe_memcmp(ab_data, ab_data_orig, sizeof(AvbABData)))  in spl_save_metadata_if_changed()
282 		return spl_ab_data_write(dev_desc, ab_data, "misc");  in spl_save_metadata_if_changed()
290 	AvbABData ab_data, ab_data_orig;  in spl_ab_decrease_tries()  local
306 	ret = spl_ab_data_read(dev_desc, &ab_data, "misc");  in spl_ab_decrease_tries()
310 	memcpy(&ab_data_orig, &ab_data, sizeof(AvbABData));  in spl_ab_decrease_tries()
313 	if (!ab_data.slots[slot_index].successful_boot &&  in spl_ab_decrease_tries()
314 	    ab_data.slots[slot_index].tries_remaining > 0)  in spl_ab_decrease_tries()
315 		ab_data.slots[slot_index].tries_remaining -= 1;  in spl_ab_decrease_tries()
317 	ret = spl_save_metadata_if_changed(dev_desc, &ab_data, &ab_data_orig);  in spl_ab_decrease_tries()
329 	AvbABData ab_data;  in spl_ab_decrease_reset()  local
332 	ret = spl_ab_data_read(dev_desc, &ab_data, "misc");  in spl_ab_decrease_reset()
337 	if (!spl_slot_is_bootable(&ab_data.slots[0]) &&  in spl_ab_decrease_reset()
338 	    !spl_slot_is_bootable(&ab_data.slots[1])) {  in spl_ab_decrease_reset()