bsg: minor bug fixes

This fixes the following minor issues:

- add EXPORT_SYMBOL_GPL for bsg_register_queue and
bsg_unregister_queue.

- shut up gcc warnings

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Jens Axboe <axboe@nelson.home.kernel.dk>
diff --git a/block/bsg.c b/block/bsg.c
index 4ef3cc5..a333c93 100644
--- a/block/bsg.c
+++ b/block/bsg.c
@@ -961,8 +961,9 @@
 	bsg_device_nr--;
 	mutex_unlock(&bsg_mutex);
 }
+EXPORT_SYMBOL_GPL(bsg_unregister_queue);
 
-int bsg_register_queue(struct request_queue *q, char *name)
+int bsg_register_queue(struct request_queue *q, const char *name)
 {
 	struct bsg_class_device *bcd, *__bcd;
 	dev_t dev;
@@ -1025,6 +1026,7 @@
 	mutex_unlock(&bsg_mutex);
 	return ret;
 }
+EXPORT_SYMBOL_GPL(bsg_register_queue);
 
 static int bsg_add(struct class_device *cl_dev, struct class_interface *cl_intf)
 {