Don't define an empty struct bsg_class_device if !CONFIG_BLK_DEV_BSG.
It's embedded in struct request_queue, but there we have
#if defined(CONFIG_BLK_DEV_BSG)
struct bsg_class_device bsg_dev;
#endif
anyway.
Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
extern int bsg_register_queue(struct request_queue *, const char *);
extern void bsg_unregister_queue(struct request_queue *);
#else
-struct bsg_class_device { };
#define bsg_register_queue(disk, name) (0)
#define bsg_unregister_queue(disk) do { } while (0)
#endif