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

No reason to go through the cfs_psdev_ops abstract
to call libcfs_ioctl. Just call libcfs_ioctl directly.

Signed-off-by: Parinay Kondekar <parinay.konde...@seagate.com>
Signed-off-by: James Simmons <uja.o...@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.dil...@intel.com>
Reviewed-by: Dmitry Eremin <dmitry.ere...@intel.com>
Reviewed-by: John L. Hammond <john.hamm...@intel.com>
Reviewed-by: Oleg Drokin <oleg.dro...@intel.com>
---
 .../staging/lustre/include/linux/libcfs/libcfs.h   |    2 +-
 .../lustre/lustre/libcfs/linux/linux-module.c      |   13 ++++---------
 drivers/staging/lustre/lustre/libcfs/module.c      |    4 ++--
 3 files changed, 7 insertions(+), 12 deletions(-)

diff --git a/drivers/staging/lustre/include/linux/libcfs/libcfs.h 
b/drivers/staging/lustre/include/linux/libcfs/libcfs.h
index 06bb676..38d65ee 100644
--- a/drivers/staging/lustre/include/linux/libcfs/libcfs.h
+++ b/drivers/staging/lustre/include/linux/libcfs/libcfs.h
@@ -75,8 +75,8 @@ struct cfs_psdev_file {
 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 (*p_ioctl)(struct cfs_psdev_file *, unsigned long, void *);
 };
+int libcfs_ioctl(struct cfs_psdev_file *pfile, unsigned long cmd, void *arg);
 
 /*
  * Drop into debugger, if possible. Implementation is provided by platform.
diff --git a/drivers/staging/lustre/lustre/libcfs/linux/linux-module.c 
b/drivers/staging/lustre/lustre/libcfs/linux/linux-module.c
index 64f0fbf..0710d0b 100644
--- a/drivers/staging/lustre/lustre/libcfs/linux/linux-module.c
+++ b/drivers/staging/lustre/lustre/libcfs/linux/linux-module.c
@@ -116,11 +116,10 @@ libcfs_psdev_release(struct inode *inode, struct file 
*file)
        return 0;
 }
 
-static long libcfs_ioctl(struct file *file,
-                        unsigned int cmd, unsigned long arg)
+static long
+libcfs_psdev_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 {
        struct cfs_psdev_file    pfile;
-       int    rc = 0;
 
        if (!capable(CAP_SYS_ADMIN))
                return -EACCES;
@@ -135,15 +134,11 @@ static long libcfs_ioctl(struct file *file,
 
        pfile.off = 0;
        pfile.private_data = file->private_data;
-       if (libcfs_psdev_ops.p_ioctl != NULL)
-               rc = libcfs_psdev_ops.p_ioctl(&pfile, cmd, (void *)arg);
-       else
-               rc = -EPERM;
-       return rc;
+       return libcfs_ioctl(&pfile, cmd, (void __user *)arg);
 }
 
 static const struct file_operations libcfs_fops = {
-       .unlocked_ioctl = libcfs_ioctl,
+       .unlocked_ioctl = libcfs_psdev_ioctl,
        .open           = libcfs_psdev_open,
        .release        = libcfs_psdev_release,
 };
diff --git a/drivers/staging/lustre/lustre/libcfs/module.c 
b/drivers/staging/lustre/lustre/libcfs/module.c
index 8a8a533..63b2b37 100644
--- a/drivers/staging/lustre/lustre/libcfs/module.c
+++ b/drivers/staging/lustre/lustre/libcfs/module.c
@@ -140,7 +140,8 @@ static int libcfs_ioctl_int(struct cfs_psdev_file *pfile, 
unsigned long cmd,
        return err;
 }
 
-static int libcfs_ioctl(struct cfs_psdev_file *pfile, unsigned long cmd, void 
*arg)
+int
+libcfs_ioctl(struct cfs_psdev_file *pfile, unsigned long cmd, void *arg)
 {
        char    *buf;
        struct libcfs_ioctl_data *data;
@@ -168,7 +169,6 @@ out:
 struct cfs_psdev_ops libcfs_psdev_ops = {
        NULL,
        NULL,
-       libcfs_ioctl
 };
 
 static int proc_call_handler(void *data, int write, loff_t *ppos,
-- 
1.7.1

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