X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Flinux%2Fbsg.h;h=ecb4730d0868504d1ed9d0cb58a3522c38073695;hb=b0d44c0dbbd52effb731b1c0af9afd56215c48de;hp=60e377b520f8e242c003b2973ac6fc8df4605e40;hpb=9e865f58da5ff0a9c19669a49ac984117711757a;p=firefly-linux-kernel-4.4.55.git

diff --git a/include/linux/bsg.h b/include/linux/bsg.h
index 60e377b520f8..ecb4730d0868 100644
--- a/include/linux/bsg.h
+++ b/include/linux/bsg.h
@@ -1,12 +1,22 @@
 #ifndef BSG_H
 #define BSG_H
 
+#include <linux/types.h>
+
 #define BSG_PROTOCOL_SCSI		0
 
 #define BSG_SUB_PROTOCOL_SCSI_CMD	0
 #define BSG_SUB_PROTOCOL_SCSI_TMF	1
 #define BSG_SUB_PROTOCOL_SCSI_TRANSPORT	2
 
+/*
+ * For flags member below
+ * sg.h sg_io_hdr also has bits defined for it's flags member. However
+ * none of these bits are implemented/used by bsg. The bits below are
+ * allocated to not conflict with sg.h ones anyway.
+ */
+#define BSG_FLAG_Q_AT_TAIL 0x10 /* default, == 0 at this bit, is Q_AT_HEAD */
+
 struct sg_io_v4 {
 	__s32 guard;		/* [i] 'Q' to differentiate from v3 */
 	__u32 protocol;		/* [i] 0 -> SCSI , .... */
@@ -55,20 +65,26 @@ struct sg_io_v4 {
 
 #if defined(CONFIG_BLK_DEV_BSG)
 struct bsg_class_device {
-	struct class_device *class_dev;
-	struct device *dev;
+	struct device *class_dev;
+	struct device *parent;
 	int minor;
 	struct request_queue *queue;
+	struct kref ref;
+	void (*release)(struct device *);
 };
 
-extern int bsg_register_queue(struct request_queue *, struct device *, const char *);
+extern int bsg_register_queue(struct request_queue *q,
+			      struct device *parent, const char *name,
+			      void (*release)(struct device *));
 extern void bsg_unregister_queue(struct request_queue *);
 #else
-static inline int bsg_register_queue(struct request_queue * rq, struct device *dev, const char *name)
+static inline int bsg_register_queue(struct request_queue *q,
+				     struct device *parent, const char *name,
+				     void (*release)(struct device *))
 {
 	return 0;
 }
-static inline void bsg_unregister_queue(struct request_queue *rq)
+static inline void bsg_unregister_queue(struct request_queue *q)
 {
 }
 #endif