114 static int spl_read_ab_metadata(struct blk_desc *dev_desc, AvbABData *ab_data,  in spl_read_ab_metadata()  argument
121 	if (!dev_desc || !partition || !ab_data)  in spl_read_ab_metadata()
135 	memcpy(ab_data, temp, sizeof(AvbABData));  in spl_read_ab_metadata()
140 static int spl_write_ab_metadata(struct blk_desc *dev_desc, AvbABData *ab_data,  in spl_write_ab_metadata()  argument
147 	if (!dev_desc || !partition || !ab_data)  in spl_write_ab_metadata()
153 	memcpy(temp, ab_data, sizeof(AvbABData));  in spl_write_ab_metadata()
165 static int spl_ab_data_write(struct blk_desc *dev_desc, AvbABData *ab_data,  in spl_ab_data_write()  argument
170 	spl_ab_data_update_crc_and_byteswap(ab_data, &serialized);  in spl_ab_data_write()
175 static int spl_ab_data_read(struct blk_desc *dev_desc, AvbABData *ab_data,  in spl_ab_data_read()  argument
185 	if (!spl_ab_data_verify_and_byteswap(&serialized, ab_data)) {  in spl_ab_data_read()
188 		spl_ab_data_init(ab_data);  in spl_ab_data_read()
189 		spl_ab_data_write(dev_desc, ab_data, partition);  in spl_ab_data_read()
201 static int spl_get_lastboot(AvbABData *ab_data)  in spl_get_lastboot()  argument
203 	return ab_data->last_boot;  in spl_get_lastboot()
210 	AvbABData ab_data;  in spl_get_current_slot()  local
234 	ret = spl_ab_data_read(dev_desc, &ab_data, partition);  in spl_get_current_slot()
238 	if (spl_slot_is_bootable(&ab_data.slots[0]) &&  in spl_get_current_slot()
239 	    spl_slot_is_bootable(&ab_data.slots[1])) {  in spl_get_current_slot()
240 		if (ab_data.slots[1].priority > ab_data.slots[0].priority)  in spl_get_current_slot()
244 	} else if (spl_slot_is_bootable(&ab_data.slots[0])) {  in spl_get_current_slot()
246 	} else if (spl_slot_is_bootable(&ab_data.slots[1])) {  in spl_get_current_slot()
250 		if (spl_get_lastboot(&ab_data) == 0) {  in spl_get_current_slot()
253 		} else if (spl_get_lastboot(&ab_data) == 1) {  in spl_get_current_slot()
270 		       ab_data.slots[slot_index_to_boot].successful_boot,  in spl_get_current_slot()
271 		       ab_data.slots[slot_index_to_boot].tries_remaining);  in spl_get_current_slot()
302 					AvbABData *ab_data,  in spl_save_metadata_if_changed()  argument
305 	if (safe_memcmp(ab_data, ab_data_orig, sizeof(AvbABData)))  in spl_save_metadata_if_changed()
306 		return spl_ab_data_write(dev_desc, ab_data, "misc");  in spl_save_metadata_if_changed()
343 	AvbABData ab_data, ab_data_orig;  in spl_ab_decrease_tries()  local
359 	ret = spl_ab_data_read(dev_desc, &ab_data, "misc");  in spl_ab_decrease_tries()
363 	memcpy(&ab_data_orig, &ab_data, sizeof(AvbABData));  in spl_ab_decrease_tries()
369 	spl_slot_normalize(&ab_data.slots[0]);  in spl_ab_decrease_tries()
370 	spl_slot_normalize(&ab_data.slots[1]);  in spl_ab_decrease_tries()
373 	if (!ab_data.slots[slot_index].successful_boot &&  in spl_ab_decrease_tries()
374 	    ab_data.slots[slot_index].tries_remaining > 0)  in spl_ab_decrease_tries()
375 		ab_data.slots[slot_index].tries_remaining -= 1;  in spl_ab_decrease_tries()
377 	ret = spl_save_metadata_if_changed(dev_desc, &ab_data, &ab_data_orig);  in spl_ab_decrease_tries()
389 	AvbABData ab_data;  in spl_ab_decrease_reset()  local
392 	ret = spl_ab_data_read(dev_desc, &ab_data, "misc");  in spl_ab_decrease_reset()
397 	if (!spl_slot_is_bootable(&ab_data.slots[0]) &&  in spl_ab_decrease_reset()
398 	    !spl_slot_is_bootable(&ab_data.slots[1])) {  in spl_ab_decrease_reset()