staging: dgnc: Remove driver-wide state variable

This commit removes the driver's global state variable. This is ok
because the state was changed only once at the end of init phase thus
the future usage of this variable is pointless.
Signed-off-by: Konrad Zapalowicz <bergo.torino@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/dgnc/dgnc_driver.c

@@ -90,7 +90,6 @@ static const struct file_operations dgnc_BoardFops = {
 uint			dgnc_NumBoards;
 struct dgnc_board		*dgnc_Board[MAXBOARDS];
 DEFINE_SPINLOCK(dgnc_global_lock);
-int			dgnc_driver_state = DRIVER_INITIALIZED;
 ulong			dgnc_poll_counter;
 uint			dgnc_Major;
 int			dgnc_poll_tick = 20;	/* Poll interval - 20 ms */
@@ -174,12 +173,6 @@ char *dgnc_state_text[] = {
 	"Board READY",
 };
 
-char *dgnc_driver_state_text[] = {
-	"Driver Initialized",
-	"Driver Ready."
-};
-
-
 
 /************************************************************************
  *
@@ -331,8 +324,6 @@ static int dgnc_start(void)
 
 	add_timer(&dgnc_poll_timer);
 
-	dgnc_driver_state = DRIVER_READY;
-
 	return rc;
 }
 
@@ -747,14 +738,6 @@ static void dgnc_poll_handler(ulong dummy)
 
 	dgnc_poll_counter++;
 
-	/*
-	 * Do not start the board state machine until
-	 * driver tells us its up and running, and has
-	 * everything it needs.
-	 */
-	if (dgnc_driver_state != DRIVER_READY)
-		goto schedule_poller;
-
 	/* Go thru each board, kicking off a tasklet for each if needed */
 	for (i = 0; i < dgnc_NumBoards; i++) {
 		brd = dgnc_Board[i];
@@ -773,8 +756,6 @@ static void dgnc_poll_handler(ulong dummy)
 		DGNC_UNLOCK(brd->bd_lock, lock_flags);
 	}
 
-schedule_poller:
-
 	/*
 	 * Schedule ourself back at the nominal wakeup interval.
 	 */

drivers/staging/dgnc/dgnc_driver.h

@@ -484,7 +484,6 @@ struct channel_t {
 /*
  * Our Global Variables.
  */
-extern int		dgnc_driver_state;	/* The state of the driver	*/
 extern uint		dgnc_Major;		/* Our driver/mgmt major	*/
 extern int		dgnc_debug;		/* Debug variable		*/
 extern int		dgnc_rawreadok;		/* Set if user wants rawreads	*/
@@ -495,6 +494,5 @@ extern uint		dgnc_NumBoards;		/* Total number of boards	*/
 extern struct dgnc_board	*dgnc_Board[MAXBOARDS];	/* Array of board structs	*/
 extern ulong		dgnc_poll_counter;	/* Times the poller has run	*/
 extern char		*dgnc_state_text[];	/* Array of state text		*/
-extern char		*dgnc_driver_state_text[];/* Array of driver state text */
 
 #endif

drivers/staging/dgnc/dgnc_sysfs.c

@@ -71,13 +71,6 @@ static ssize_t dgnc_driver_pollcounter_show(struct device_driver *ddp, char *buf
 static DRIVER_ATTR(pollcounter, S_IRUSR, dgnc_driver_pollcounter_show, NULL);
 
 
-static ssize_t dgnc_driver_state_show(struct device_driver *ddp, char *buf)
-{
-	return snprintf(buf, PAGE_SIZE, "%s\n", dgnc_driver_state_text[dgnc_driver_state]);
-}
-static DRIVER_ATTR(state, S_IRUSR, dgnc_driver_state_show, NULL);
-
-
 static ssize_t dgnc_driver_debug_show(struct device_driver *ddp, char *buf)
 {
 	return snprintf(buf, PAGE_SIZE, "0x%x\n", dgnc_debug);
@@ -129,7 +122,6 @@ void dgnc_create_driver_sysfiles(struct pci_driver *dgnc_driver)
 	rc |= driver_create_file(driverfs, &driver_attr_rawreadok);
 	rc |= driver_create_file(driverfs, &driver_attr_pollrate);
 	rc |= driver_create_file(driverfs, &driver_attr_pollcounter);
-	rc |= driver_create_file(driverfs, &driver_attr_state);
 	if (rc) {
 		printk(KERN_ERR "DGNC: sysfs driver_create_file failed!\n");
 	}
@@ -146,7 +138,6 @@ void dgnc_remove_driver_sysfiles(struct pci_driver *dgnc_driver)
 	driver_remove_file(driverfs, &driver_attr_rawreadok);
 	driver_remove_file(driverfs, &driver_attr_pollrate);
 	driver_remove_file(driverfs, &driver_attr_pollcounter);
-	driver_remove_file(driverfs, &driver_attr_state);
 }