staging: dgap: get rid of brd->firstminor because it is 0

firstminor in struct borad_t is always zero, so it
can be removed.
Signed-off-by: NDaeseok Youn <daeseok.youn@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/dgap/dgap.c

@@ -684,7 +684,6 @@ static int dgap_found_board(struct pci_dev *pdev, int id, int boardnum)
 	/* store the info for the board we've found */
 	brd->magic = DGAP_BOARD_MAGIC;
 	brd->boardnum = boardnum;
-	brd->firstminor = 0;
 	brd->vendor = dgap_pci_tbl[id].vendor;
 	brd->device = dgap_pci_tbl[id].device;
 	brd->pdev = pdev;
@@ -4168,8 +4167,8 @@ static int dgap_tty_register_ports(struct board_t *brd)
 		struct device *classp;
 
 		classp = tty_port_register_device(&brd->serial_ports[i],
-					brd->serial_driver,
-					brd->firstminor + i, NULL);
+						  brd->serial_driver,
+						  i, NULL);
 
 		if (IS_ERR(classp)) {
 			ret = PTR_ERR(classp);
@@ -4180,8 +4179,8 @@ static int dgap_tty_register_ports(struct board_t *brd)
 		ch->ch_tun.un_sysfs = classp;
 
 		classp = tty_port_register_device(&brd->printer_ports[i],
-					brd->print_driver,
-					brd->firstminor + i, NULL);
+						  brd->print_driver,
+						  i, NULL);
 
 		if (IS_ERR(classp)) {
 			ret = PTR_ERR(classp);

drivers/staging/dgap/dgap.h

@@ -529,7 +529,6 @@ struct macounter {
 struct board_t {
 	int		magic;		/* Board Magic number.  */
 	int		boardnum;	/* Board number: 0-3 */
-	int		firstminor;	/* First minor, e.g. 0, 30, 60 */
 
 	int		type;		/* Type of board */
 	char		*name;		/* Product Name */