[PATCH] mxser: fix compile warning building without CONFIG_PCI

[Li Zefan <lizf@cn.fujitsu.com>]

When build without CONFIG_PIC, got the following warnings:

drivers/char/mxser.c: In function 'mxser_init':
drivers/char/mxser.c:698: warning: unused variable 'devnum'
drivers/char/mxser.c:698: warning: unused variable 'busnum'
drivers/char/mxser.c:697: warning: unused variable 'index'
drivers/char/mxser.c:696: warning: unused variable 'pdev'
drivers/char/mxser.c:695: warning: unused variable 'n'

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
---
 drivers/char/mxser.c |   14 ++++++--------
 1 files changed, 6 insertions(+), 8 deletions(-)

diff --git a/drivers/char/mxser.c b/drivers/char/mxser.c
index fd0abef..b2cc93d 100644
--- a/drivers/char/mxser.c
+++ b/drivers/char/mxser.c
@@ -692,10 +692,7 @@ static int mxser_get_PCI_conf(int busnum, int devnum, int board_type, struct mxs
 
 static int mxser_init(void)
 {
-	int i, m, retval, b, n;
-	struct pci_dev *pdev = NULL;
-	int index;
-	unsigned char busnum, devnum;
+	int i, m, retval, b;
 	struct mxser_hwconf hwconf;
 
 	mxvar_sdriver = alloc_tty_driver(MXSER_PORTS + 1);
@@ -834,10 +831,11 @@ static int mxser_init(void)
 
 	/* start finding PCI board here */
 #ifdef CONFIG_PCI
-	n = ARRAY_SIZE(mxser_pcibrds) - 1;
-	index = 0;
 	b = 0;
-	while (b < n) {
+	while (b < ARRAY_SIZE(mxser_pcibrds)-1) {
+		unsigned char busnum, devnum;
+		struct pci_dev *pdev;
+
 		pdev = pci_get_device(mxser_pcibrds[b].vendor,
 				mxser_pcibrds[b].device, pdev);
 		if (pdev == NULL) {
@@ -850,7 +848,7 @@ static int mxser_init(void)
 		printk(KERN_INFO "Found MOXA %s board(BusNo=%d,DevNo=%d)\n",
 			mxser_brdname[(int) (mxser_pcibrds[b].driver_data) - 1],
 			busnum, devnum >> 3);
-		index++;
+
 		if (m >= MXSER_BOARDS)
 			printk(KERN_ERR
 				"Too many Smartio/Industio family boards find "
-- 
1.5.4.rc3