staging: comedi: make class and file operations static

A couple of global variables in "comedi_fops.c" are only referenced from
that .c file and can be declared 'static'.  Also remove them from
"comedi_fops.h" where they are declared 'extern'.

Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/comedi/comedi_fops.c

@@ -2182,7 +2182,7 @@ static int comedi_fasync(int fd, struct file *file, int on)
 	return fasync_helper(fd, file, on, &dev->async_queue);
 }
 
-const struct file_operations comedi_fops = {
+static const struct file_operations comedi_fops = {
 	.owner = THIS_MODULE,
 	.unlocked_ioctl = comedi_unlocked_ioctl,
 	.compat_ioctl = comedi_compat_ioctl,
@@ -2196,7 +2196,7 @@ const struct file_operations comedi_fops = {
 	.llseek = noop_llseek,
 };
 
-struct class *comedi_class;
+static struct class *comedi_class;
 static struct cdev comedi_cdev;
 
 static void comedi_cleanup_legacy_minors(void)

drivers/staging/comedi/comedi_fops.h

@@ -3,8 +3,6 @@
 #define _COMEDI_FOPS_H
 #include <linux/types.h>
 
-extern struct class *comedi_class;
-extern const struct file_operations comedi_fops;
 extern bool comedi_autoconfig;
 extern struct comedi_driver *comedi_drivers;