- struct spi_master *m;
-
- down(&spi_master_class.sem);
- list_for_each_entry(dev, &spi_master_class.children, node) {
- m = container_of(dev, struct spi_master, dev);
- if (m->bus_num == bus_num) {
- master = spi_master_get(m);
- break;
- }
- }
- up(&spi_master_class.sem);
+
+ dev = class_find_device(&spi_master_class, &bus_num,
+ __spi_master_match);
+ if (dev)
+ master = container_of(dev, struct spi_master, dev);
+ /* reference got in class_find_device */