[PATCH 7/7] staging:lustre: remove libcfs pseudo device abstraction

[James Simmons <jsimmons@infradead.org>]

From: Parinay Kondekar <parinay.kondekar@seagate.com>

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/17492
Reviewed-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>
---
 .../staging/lustre/include/linux/libcfs/libcfs.h   |   21 +-------------------
 .../lustre/lustre/libcfs/linux/linux-module.c      |    6 +----
 drivers/staging/lustre/lustre/libcfs/module.c      |   13 +++--------
 3 files changed, 6 insertions(+), 34 deletions(-)

diff --git a/drivers/staging/lustre/include/linux/libcfs/libcfs.h b/drivers/staging/lustre/include/linux/libcfs/libcfs.h
index 38d65ee..6995367 100644
--- a/drivers/staging/lustre/include/linux/libcfs/libcfs.h
+++ b/drivers/staging/lustre/include/linux/libcfs/libcfs.h
@@ -59,24 +59,7 @@
 #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);
-};
-int libcfs_ioctl(struct cfs_psdev_file *pfile, unsigned long cmd, void *arg);
+int libcfs_ioctl(unsigned long cmd, void *arg);
 
 /*
  * Drop into debugger, if possible. Implementation is provided by platform.
@@ -143,8 +126,6 @@ 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 {
diff --git a/drivers/staging/lustre/lustre/libcfs/linux/linux-module.c b/drivers/staging/lustre/lustre/libcfs/linux/linux-module.c
index 0710d0b..02ef039 100644
--- a/drivers/staging/lustre/lustre/libcfs/linux/linux-module.c
+++ b/drivers/staging/lustre/lustre/libcfs/linux/linux-module.c
@@ -119,8 +119,6 @@ libcfs_psdev_release(struct inode *inode, struct file *file)
 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;
 
@@ -132,9 +130,7 @@ libcfs_psdev_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 		return -EINVAL;
 	}
 
-	pfile.off = 0;
-	pfile.private_data = file->private_data;
-	return libcfs_ioctl(&pfile, cmd, (void __user *)arg);
+	return libcfs_ioctl(cmd, (void __user *)arg);
 }
 
 static const struct file_operations libcfs_fops = {
diff --git a/drivers/staging/lustre/lustre/libcfs/module.c b/drivers/staging/lustre/lustre/libcfs/module.c
index 63b2b37..1c8da7d 100644
--- a/drivers/staging/lustre/lustre/libcfs/module.c
+++ b/drivers/staging/lustre/lustre/libcfs/module.c
@@ -101,8 +101,8 @@ int libcfs_deregister_ioctl(struct libcfs_ioctl_handler *hand)
 }
 EXPORT_SYMBOL(libcfs_deregister_ioctl);
 
-static int libcfs_ioctl_int(struct cfs_psdev_file *pfile, unsigned long cmd,
-			    void *arg, struct libcfs_ioctl_data *data)
+static int
+libcfs_ioctl_int(unsigned long cmd, void *arg, struct libcfs_ioctl_data *data)
 {
 	int err = -EINVAL;
 
@@ -141,7 +141,7 @@ static int libcfs_ioctl_int(struct cfs_psdev_file *pfile, unsigned long cmd,
 }
 
 int
-libcfs_ioctl(struct cfs_psdev_file *pfile, unsigned long cmd, void *arg)
+libcfs_ioctl(unsigned long cmd, void *arg)
 {
 	char    *buf;
 	struct libcfs_ioctl_data *data;
@@ -159,18 +159,13 @@ libcfs_ioctl(struct cfs_psdev_file *pfile, unsigned long cmd, void *arg)
 	}
 	data = (struct libcfs_ioctl_data *)buf;
 
-	err = libcfs_ioctl_int(pfile, cmd, arg, data);
+	err = libcfs_ioctl_int(cmd, arg, data);
 
 out:
 	LIBCFS_FREE(buf, 1024);
 	return err;
 }
 
-struct cfs_psdev_ops libcfs_psdev_ops = {
-	NULL,
-	NULL,
-};
-
 static int proc_call_handler(void *data, int write, loff_t *ppos,
 		void __user *buffer, size_t *lenp,
 		int (*handler)(void *data, int write,
-- 
1.7.1