staging: dgnc: remove unused variable named rawreadok

This patch removes the variable rawreadok since it is only intialized
but not used in any of the driver functions.
Signed-off-by: Aya Mahfouz <mahfouz.saif.elyazal@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/dgnc/dgnc_driver.c

@@ -56,7 +56,6 @@ MODULE_SUPPORTED_DEVICE("dgnc");
  * us to specify the variable type, name, initial value, and description.
  */
 PARM_INT(debug,		0x00,		0644,	"Driver debugging level");
-PARM_INT(rawreadok,	1,		0644,	"Bypass flip buffers on input");
 
 /**************************************************************************
  *
@@ -741,7 +740,6 @@ static void dgnc_init_globals(void)
 {
 	int i = 0;
 
-	dgnc_rawreadok		= rawreadok;
 	dgnc_debug		= debug;
 	dgnc_NumBoards		= 0;
 

drivers/staging/dgnc/dgnc_driver.h

@@ -429,7 +429,6 @@ struct channel_t {
  */
 extern uint		dgnc_Major;		/* Our driver/mgmt major	*/
 extern int		dgnc_debug;		/* Debug variable		*/
-extern int		dgnc_rawreadok;		/* Set if user wants rawreads	*/
 extern int		dgnc_poll_tick;		/* Poll interval - 20 ms	*/
 extern spinlock_t	dgnc_global_lock;	/* Driver global spinlock	*/
 extern uint		dgnc_NumBoards;		/* Total number of boards	*/

drivers/staging/dgnc/dgnc_sysfs.c

@@ -80,23 +80,6 @@ static ssize_t dgnc_driver_debug_store(struct device_driver *ddp, const char *bu
 static DRIVER_ATTR(debug, (S_IRUSR | S_IWUSR), dgnc_driver_debug_show, dgnc_driver_debug_store);
 
 
-static ssize_t dgnc_driver_rawreadok_show(struct device_driver *ddp, char *buf)
-{
-	return snprintf(buf, PAGE_SIZE, "0x%x\n", dgnc_rawreadok);
-}
-
-static ssize_t dgnc_driver_rawreadok_store(struct device_driver *ddp, const char *buf, size_t count)
-{
-	int ret;
-
-	ret = sscanf(buf, "0x%x\n", &dgnc_rawreadok);
-	if (ret != 1)
-		return -EINVAL;
-	return count;
-}
-static DRIVER_ATTR(rawreadok, (S_IRUSR | S_IWUSR), dgnc_driver_rawreadok_show, dgnc_driver_rawreadok_store);
-
-
 static ssize_t dgnc_driver_pollrate_show(struct device_driver *ddp, char *buf)
 {
 	return snprintf(buf, PAGE_SIZE, "%dms\n", dgnc_poll_tick);
@@ -123,7 +106,6 @@ void dgnc_create_driver_sysfiles(struct pci_driver *dgnc_driver)
 	rc |= driver_create_file(driverfs, &driver_attr_boards);
 	rc |= driver_create_file(driverfs, &driver_attr_maxboards);
 	rc |= driver_create_file(driverfs, &driver_attr_debug);
-	rc |= driver_create_file(driverfs, &driver_attr_rawreadok);
 	rc |= driver_create_file(driverfs, &driver_attr_pollrate);
 	if (rc)
 		printk(KERN_ERR "DGNC: sysfs driver_create_file failed!\n");
@@ -138,7 +120,6 @@ void dgnc_remove_driver_sysfiles(struct pci_driver *dgnc_driver)
 	driver_remove_file(driverfs, &driver_attr_boards);
 	driver_remove_file(driverfs, &driver_attr_maxboards);
 	driver_remove_file(driverfs, &driver_attr_debug);
-	driver_remove_file(driverfs, &driver_attr_rawreadok);
 	driver_remove_file(driverfs, &driver_attr_pollrate);
 }