staging: lustre: libcfs: return size_t for libcfs_ioctl_packlen

Change return value to size_t.
Signed-off-by: James Simmons <uja.ornl@yahoo.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-6245
Reviewed-on: http://review.whamcloud.com/17643Reviewed-by: Bob Glossman <bob.glossman@intel.com>
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Reviewed-by: Dmitry Eremin <dmitry.eremin@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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

@@ -40,9 +40,9 @@
 
 #define LNET_MINOR 240
 
-static inline int libcfs_ioctl_packlen(struct libcfs_ioctl_data *data)
+static inline size_t libcfs_ioctl_packlen(struct libcfs_ioctl_data *data)
 {
-	int len = sizeof(*data);
+	size_t len = sizeof(*data);
 
 	len += cfs_size_round(data->ioc_inllen1);
 	len += cfs_size_round(data->ioc_inllen2);