staging:lustre: remove libcfs pseudo device abstraction

With the libcfs ioctl cleanup we no longer need the libcfs
pseudo device abstraction.
Signed-off-by: Parinay Kondekar <parinay.kondekar@seagate.com>
Signed-off-by: James Simmons <uja.ornl@yahoo.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5844
Reviewed-on: http://review.whamcloud.com/17492Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Dmitry Eremin <dmitry.eremin@intel.com>
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/lustre/include/linux/libcfs/libcfs.h

@@ -59,24 +59,6 @@
 #define LNET_ACCEPTOR_MIN_RESERVED_PORT    512
 #define LNET_ACCEPTOR_MAX_RESERVED_PORT    1023
 
-/*
- * libcfs pseudo device operations
- *
- * It's just draft now.
- */
-
-struct cfs_psdev_file {
-	unsigned long   off;
-	void	    *private_data;
-	unsigned long   reserved1;
-	unsigned long   reserved2;
-};
-
-struct cfs_psdev_ops {
-	int (*p_read)(struct cfs_psdev_file *, char *, unsigned long);
-	int (*p_write)(struct cfs_psdev_file *, char *, unsigned long);
-};
-
 /*
  * Drop into debugger, if possible. Implementation is provided by platform.
  */
@@ -130,7 +112,7 @@ struct libcfs_ioctl_handler {
 int libcfs_register_ioctl(struct libcfs_ioctl_handler *hand);
 int libcfs_deregister_ioctl(struct libcfs_ioctl_handler *hand);
 
-int libcfs_ioctl(struct cfs_psdev_file *pfile, unsigned long cmd, void *arg);
+int libcfs_ioctl(unsigned long cmd, void *arg);
 
 /* container_of depends on "likely" which is defined in libcfs_private.h */
 static inline void *__container_of(void *ptr, unsigned long shift)
@@ -156,8 +138,6 @@ extern struct miscdevice libcfs_dev;
 extern char lnet_upcall[1024];
 extern char lnet_debug_log_upcall[1024];
 
-extern struct cfs_psdev_ops libcfs_psdev_ops;
-
 extern struct cfs_wi_sched *cfs_sched_rehash;
 
 struct lnet_debugfs_symlink_def {

drivers/staging/lustre/lnet/libcfs/linux/linux-module.c

@@ -98,8 +98,6 @@ int libcfs_ioctl_getdata(struct libcfs_ioctl_hdr **hdr_pp,
 static long
 libcfs_psdev_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 {
-	struct cfs_psdev_file	 pfile;
-
 	if (!capable(CAP_SYS_ADMIN))
 		return -EACCES;
 
@@ -111,7 +109,7 @@ libcfs_psdev_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 		return -EINVAL;
 	}
 
-	return libcfs_ioctl(&pfile, cmd, (void __user *)arg);
+	return libcfs_ioctl(cmd, (void __user *)arg);
 }
 
 static const struct file_operations libcfs_fops = {

drivers/staging/lustre/lnet/libcfs/module.c

@@ -98,8 +98,7 @@ int libcfs_deregister_ioctl(struct libcfs_ioctl_handler *hand)
 }
 EXPORT_SYMBOL(libcfs_deregister_ioctl);
 
-int libcfs_ioctl(struct cfs_psdev_file *pfile, unsigned long cmd,
-		 void __user *uparam)
+int libcfs_ioctl(unsigned long cmd, void __user *uparam)
 {
 	struct libcfs_ioctl_data *data = NULL;
 	struct libcfs_ioctl_hdr *hdr;
@@ -165,11 +164,6 @@ int libcfs_ioctl(struct cfs_psdev_file *pfile, unsigned long cmd,
 	return err;
 }
 
-struct cfs_psdev_ops libcfs_psdev_ops = {
-	NULL,
-	NULL,
-};
-
 int lprocfs_call_handler(void *data, int write, loff_t *ppos,
 			 void __user *buffer, size_t *lenp,
 			 int (*handler)(void *data, int write, loff_t pos,