include/linux/bsg.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef BSG_H
   3 #define BSG_H
   4
   5 #include <uapi/linux/bsg.h>
   6
   7
   8 #if defined(CONFIG_BLK_DEV_BSG)
   9 struct bsg_class_device {
  10         struct device *class_dev;
  11         struct device *parent;
  12         int minor;
  13         struct request_queue *queue;
  14         struct kref ref;
  15         void (*release)(struct device *);
  16 };
  17
  18 extern int bsg_register_queue(struct request_queue *q,
  19                               struct device *parent, const char *name,
  20                               void (*release)(struct device *));
  21 extern void bsg_unregister_queue(struct request_queue *);
  22 #else
  23 static inline int bsg_register_queue(struct request_queue *q,
  24                                      struct device *parent, const char *name,
  25                                      void (*release)(struct device *))
  26 {
  27         return 0;
  28 }
  29 static inline void bsg_unregister_queue(struct request_queue *q)
  30 {
  31 }
  32 #endif
  33
  34 #endif