diff --git a/drivers/base/firmware_class.c b/drivers/base/firmware_class.c
index 4a1b9bfc5471fe91ade02cedfaab22f6cec0d636..0295855a3eefe58ddf48bc9061123e3177be67f8 100644
--- a/drivers/base/firmware_class.c
+++ b/drivers/base/firmware_class.c
@@ -292,8 +292,7 @@ firmware_class_timeout(u_long data)
 
 static inline void fw_setup_device_id(struct device *f_dev, struct device *dev)
 {
-	/* XXX warning we should watch out for name collisions */
-	strlcpy(f_dev->bus_id, dev->bus_id, BUS_ID_SIZE);
+	snprintf(f_dev->bus_id, BUS_ID_SIZE, "firmware-%s", dev->bus_id);
 }
 
 static int fw_register_device(struct device **dev_p, const char *fw_name,