[SCSI] scsi_dh: Remove hardware handler infrastructure from dm

This patch just removes infrastructure that provided support for hardware
handlers in the dm layer as it is not needed anymore.

Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com>
Acked-by: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

1 files changed, 0 insertions, 63 deletions

diff --git a/drivers/md/dm-hw-handler.h b/drivers/md/dm-hw-handler.h
deleted file mode 100644
index 46809dcb121a..000000000000
--- a/drivers/md/dm-hw-handler.h
+++ /dev/null
@@ -1,63 +0,0 @@
-/*
- * Copyright (C) 2004 Red Hat, Inc. All rights reserved.
- *
- * This file is released under the GPL.
- *
- * Multipath hardware handler registration.
- */
-
-#ifndef	DM_HW_HANDLER_H
-#define	DM_HW_HANDLER_H
-
-#include <linux/device-mapper.h>
-
-#include "dm-mpath.h"
-
-struct hw_handler_type;
-struct hw_handler {
-	struct hw_handler_type *type;
-	struct mapped_device *md;
-	void *context;
-};
-
-/*
- * Constructs a hardware handler object, takes custom arguments
- */
-/* Information about a hardware handler type */
-struct hw_handler_type {
-	char *name;
-	struct module *module;
-
-	int (*create) (struct hw_handler *handler, unsigned int argc,
-		       char **argv);
-	void (*destroy) (struct hw_handler *hwh);
-
-	void (*pg_init) (struct hw_handler *hwh, unsigned bypassed,
-			 struct dm_path *path);
-	unsigned (*error) (struct hw_handler *hwh, struct bio *bio);
-	int (*status) (struct hw_handler *hwh, status_type_t type,
-		       char *result, unsigned int maxlen);
-};
-
-/* Register a hardware handler */
-int dm_register_hw_handler(struct hw_handler_type *type);
-
-/* Unregister a hardware handler */
-int dm_unregister_hw_handler(struct hw_handler_type *type);
-
-/* Returns a registered hardware handler type */
-struct hw_handler_type *dm_get_hw_handler(const char *name);
-
-/* Releases a hardware handler  */
-void dm_put_hw_handler(struct hw_handler_type *hwht);
-
-/* Default err function */
-unsigned dm_scsi_err_handler(struct hw_handler *hwh, struct bio *bio);
-
-/* Error flags for err and dm_pg_init_complete */
-#define MP_FAIL_PATH 1
-#define MP_BYPASS_PG 2
-#define MP_ERROR_IO  4	/* Don't retry this I/O */
-#define MP_RETRY 8
-
-#endif