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staging: dgap: Remove unnecessary initialization of variables in declarations 

Removes unnecessary initialization of variables in declarations

Signed-off-by: Mark Hounschell <markh@compro.net>
Tested-by: Mark Hounschell <markh@compro.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Mark Hounschell 2014-05-23 10:14:02 -04:00 committed by Greg Kroah-Hartman
parent 6baf139e8b
commit 7dfa383108
1 changed files with 84 additions and 91 deletions
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175
drivers/staging/dgap/dgap.c
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@ -466,7 +466,7 @@ static struct toklist dgap_tlist[] = {
*/
static int dgap_init_module(void)
{
int rc = 0;
int rc;
pr_info("%s, Digi International Part Number %s\n", DG_NAME, DG_PART);
@ -499,7 +499,7 @@ module_init(dgap_init_module);
*/
static int dgap_start(void)
{
int rc = 0;
int rc;
unsigned long flags;
struct device *device;
@ -635,7 +635,7 @@ static void dgap_cleanup_module(void)
*/
static void dgap_cleanup_board(struct board_t *brd)
{
int i = 0;
int i;
if (!brd || brd->magic != DGAP_BOARD_MAGIC)
return;
@ -678,7 +678,7 @@ static int dgap_found_board(struct pci_dev *pdev, int id)
{
struct board_t *brd;
unsigned int pci_irq;
int i = 0;
int i;
/* get the board structure and prep it */
brd = kzalloc(sizeof(struct board_t), GFP_KERNEL);
@ -1165,7 +1165,7 @@ static irqreturn_t dgap_intr(int irq, void *voidbrd)
*/
static void dgap_init_globals(void)
{
int i = 0;
int i;
for (i = 0; i < MAXBOARDS; i++)
dgap_board[i] = NULL;
@ -1321,9 +1321,9 @@ static int dgap_tty_init(struct board_t *brd)
{
int i;
int tlw;
uint true_count = 0;
uint true_count;
u8 __iomem *vaddr;
u8 modem = 0;
u8 modem;
struct channel_t *ch;
struct bs_t __iomem *bs;
struct cm_t __iomem *cm;
@ -1491,7 +1491,7 @@ static int dgap_tty_init(struct board_t *brd)
static void dgap_tty_uninit(struct board_t *brd)
{
struct device *dev;
int i = 0;
int i;
if (brd->dgap_major_serial_registered) {
dgap_boards_by_major[brd->serial_driver->major] = NULL;
@ -1549,11 +1549,11 @@ static void dgap_input(struct channel_t *ch)
ulong lock_flags;
ulong lock_flags2;
int flip_len;
int len = 0;
int n = 0;
int len;
int n;
u8 *buf;
u8 tmpchar;
int s = 0;
int s;
if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
return;
@ -1866,15 +1866,13 @@ static int dgap_tty_open(struct tty_struct *tty, struct file *file)
struct channel_t *ch;
struct un_t *un;
struct bs_t __iomem *bs;
uint major = 0;
uint minor = 0;
int rc = 0;
uint major;
uint minor;
int rc;
ulong lock_flags;
ulong lock_flags2;
u16 head;
rc = 0;
major = MAJOR(tty_devnum(tty));
minor = MINOR(tty_devnum(tty));
@ -2020,10 +2018,10 @@ static int dgap_block_til_ready(struct tty_struct *tty, struct file *file,
struct channel_t *ch)
{
int retval = 0;
struct un_t *un = NULL;
struct un_t *un;
ulong lock_flags;
uint old_flags = 0;
int sleep_on_un_flags = 0;
uint old_flags;
int sleep_on_un_flags;
if (!tty || tty->magic != TTY_MAGIC || !file || !ch ||
ch->magic != DGAP_CHANNEL_MAGIC)
@ -2187,7 +2185,6 @@ static void dgap_tty_close(struct tty_struct *tty, struct file *file)
struct channel_t *ch;
struct un_t *un;
ulong lock_flags;
int rc = 0;
if (!tty || tty->magic != TTY_MAGIC)
return;
@ -2253,7 +2250,7 @@ static void dgap_tty_close(struct tty_struct *tty, struct file *file)
/* wait for output to drain */
/* This will also return if we take an interrupt */
rc = dgap_wait_for_drain(tty);
dgap_wait_for_drain(tty);
dgap_tty_flush_buffer(tty);
tty_ldisc_flush(tty);
@ -2316,12 +2313,12 @@ static void dgap_tty_close(struct tty_struct *tty, struct file *file)
*/
static int dgap_tty_chars_in_buffer(struct tty_struct *tty)
{
struct board_t *bd = NULL;
struct channel_t *ch = NULL;
struct un_t *un = NULL;
struct board_t *bd;
struct channel_t *ch;
struct un_t *un;
struct bs_t __iomem *bs;
u8 tbusy;
uint chars = 0;
uint chars;
u16 thead, ttail, tmask, chead, ctail;
ulong lock_flags = 0;
ulong lock_flags2 = 0;
@ -2411,26 +2408,24 @@ static int dgap_wait_for_drain(struct tty_struct *tty)
struct channel_t *ch;
struct un_t *un;
struct bs_t __iomem *bs;
int ret = -EIO;
int ret = 0;
uint count = 1;
ulong lock_flags = 0;
if (!tty || tty->magic != TTY_MAGIC)
return ret;
return -EIO;
un = tty->driver_data;
if (!un || un->magic != DGAP_UNIT_MAGIC)
return ret;
return -EIO;
ch = un->un_ch;
if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
return ret;
return -EIO;
bs = ch->ch_bs;
if (!bs)
return ret;
ret = 0;
return -EIO;
/* Loop until data is drained */
while (count != 0) {
@ -2471,8 +2466,8 @@ static int dgap_wait_for_drain(struct tty_struct *tty)
*/
static int dgap_maxcps_room(struct tty_struct *tty, int bytes_available)
{
struct channel_t *ch = NULL;
struct un_t *un = NULL;
struct channel_t *ch;
struct un_t *un;
if (tty == NULL)
return bytes_available;
@ -2520,8 +2515,8 @@ static int dgap_maxcps_room(struct tty_struct *tty, int bytes_available)
static inline void dgap_set_firmware_event(struct un_t *un, unsigned int event)
{
struct channel_t *ch = NULL;
struct bs_t __iomem *bs = NULL;
struct channel_t *ch;
struct bs_t __iomem *bs;
if (!un || un->magic != DGAP_UNIT_MAGIC)
return;
@ -2553,11 +2548,11 @@ static inline void dgap_set_firmware_event(struct un_t *un, unsigned int event)
*/
static int dgap_tty_write_room(struct tty_struct *tty)
{
struct channel_t *ch = NULL;
struct un_t *un = NULL;
struct channel_t *ch;
struct un_t *un;
struct bs_t __iomem *bs;
u16 head, tail, tmask;
int ret = 0;
int ret;
ulong lock_flags = 0;
if (!tty)
@ -2642,13 +2637,13 @@ static int dgap_tty_put_char(struct tty_struct *tty, unsigned char c)
static int dgap_tty_write(struct tty_struct *tty, const unsigned char *buf,
int count)
{
struct channel_t *ch = NULL;
struct un_t *un = NULL;
struct channel_t *ch;
struct un_t *un;
struct bs_t __iomem *bs;
char __iomem *vaddr;
u16 head, tail, tmask, remain;
int bufcount = 0, n = 0;
int orig_count = 0;
int bufcount, n;
int orig_count;
ulong lock_flags;
if (!tty)
@ -2809,20 +2804,20 @@ static int dgap_tty_tiocmget(struct tty_struct *tty)
{
struct channel_t *ch;
struct un_t *un;
int result = -EIO;
u8 mstat = 0;
int result;
u8 mstat;
ulong lock_flags;
if (!tty || tty->magic != TTY_MAGIC)
return result;
return -EIO;
un = tty->driver_data;
if (!un || un->magic != DGAP_UNIT_MAGIC)
return result;
return -EIO;
ch = un->un_ch;
if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
return result;
return -EIO;
spin_lock_irqsave(&ch->ch_lock, lock_flags);
@ -2861,24 +2856,23 @@ static int dgap_tty_tiocmset(struct tty_struct *tty,
struct board_t *bd;
struct channel_t *ch;
struct un_t *un;
int ret = -EIO;
ulong lock_flags;
ulong lock_flags2;
if (!tty || tty->magic != TTY_MAGIC)
return ret;
return -EIO;
un = tty->driver_data;
if (!un || un->magic != DGAP_UNIT_MAGIC)
return ret;
return -EIO;
ch = un->un_ch;
if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
return ret;
return -EIO;
bd = ch->ch_bd;
if (!bd || bd->magic != DGAP_BOARD_MAGIC)
return ret;
return -EIO;
spin_lock_irqsave(&bd->bd_lock, lock_flags);
spin_lock_irqsave(&ch->ch_lock, lock_flags2);
@ -2921,24 +2915,23 @@ static int dgap_tty_send_break(struct tty_struct *tty, int msec)
struct board_t *bd;
struct channel_t *ch;
struct un_t *un;
int ret = -EIO;
ulong lock_flags;
ulong lock_flags2;
if (!tty || tty->magic != TTY_MAGIC)
return ret;
return -EIO;
un = tty->driver_data;
if (!un || un->magic != DGAP_UNIT_MAGIC)
return ret;
return -EIO;
ch = un->un_ch;
if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
return ret;
return -EIO;
bd = ch->ch_bd;
if (!bd || bd->magic != DGAP_BOARD_MAGIC)
return ret;
return -EIO;
switch (msec) {
case -1:
@ -3035,10 +3028,10 @@ static void dgap_tty_send_xchar(struct tty_struct *tty, char c)
*/
static int dgap_get_modem_info(struct channel_t *ch, unsigned int __user *value)
{
int result = 0;
u8 mstat = 0;
int result;
u8 mstat;
ulong lock_flags;
int rc = 0;
int rc;
if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
return -ENXIO;
@ -3082,25 +3075,25 @@ static int dgap_set_modem_info(struct tty_struct *tty, unsigned int command,
struct board_t *bd;
struct channel_t *ch;
struct un_t *un;
int ret = -ENXIO;
unsigned int arg = 0;
int ret;
unsigned int arg;
ulong lock_flags;
ulong lock_flags2;
if (!tty || tty->magic != TTY_MAGIC)
return ret;
return -EIO;
un = tty->driver_data;
if (!un || un->magic != DGAP_UNIT_MAGIC)
return ret;
return -EIO;
ch = un->un_ch;
if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
return ret;
return -EIO;
bd = ch->ch_bd;
if (!bd || bd->magic != DGAP_BOARD_MAGIC)
return ret;
return -EIO;
ret = get_user(arg, value);
if (ret)
@ -3690,7 +3683,7 @@ static void dgap_tty_flush_buffer(struct tty_struct *tty)
struct un_t *un;
ulong lock_flags;
ulong lock_flags2;
u16 head = 0;
u16 head;
if (!tty || tty->magic != TTY_MAGIC)
return;
@ -3748,7 +3741,7 @@ static int dgap_tty_ioctl(struct tty_struct *tty, unsigned int cmd,
struct channel_t *ch;
struct un_t *un;
int rc;
u16 head = 0;
u16 head;
ulong lock_flags = 0;
ulong lock_flags2 = 0;
void __user *uarg = (void __user *) arg;
@ -4371,7 +4364,7 @@ static void dgap_do_reset_board(struct board_t *brd)
u8 check;
u32 check1;
u32 check2;
int i = 0;
int i;
if (!brd || (brd->magic != DGAP_BOARD_MAGIC) ||
!brd->re_map_membase || !brd->re_map_port)
@ -4419,7 +4412,7 @@ static void dgap_do_reset_board(struct board_t *brd)
static void dgap_do_conc_load(struct board_t *brd, u8 *uaddr, int len)
{
char __iomem *vaddr;
u16 offset = 0;
u16 offset;
struct downld_t *to_dp;
if (!brd || (brd->magic != DGAP_BOARD_MAGIC) || !brd->re_map_membase)
@ -4949,7 +4942,7 @@ static uint dgap_get_custom_baud(struct channel_t *ch)
{
u8 __iomem *vaddr;
ulong offset;
uint value = 0;
uint value;
if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
return 0;
@ -5732,7 +5725,7 @@ static ssize_t dgap_ports_state_show(struct device *p,
{
struct board_t *bd;
int count = 0;
int i = 0;
int i;
bd = dgap_verify_board(p);
if (!bd)
@ -5753,7 +5746,7 @@ static ssize_t dgap_ports_baud_show(struct device *p,
{
struct board_t *bd;
int count = 0;
int i = 0;
int i;
bd = dgap_verify_board(p);
if (!bd)
@ -5774,7 +5767,7 @@ static ssize_t dgap_ports_msignals_show(struct device *p,
{
struct board_t *bd;
int count = 0;
int i = 0;
int i;
bd = dgap_verify_board(p);
if (!bd)
@ -5811,7 +5804,7 @@ static ssize_t dgap_ports_iflag_show(struct device *p,
{
struct board_t *bd;
int count = 0;
int i = 0;
int i;
bd = dgap_verify_board(p);
if (!bd)
@ -5831,7 +5824,7 @@ static ssize_t dgap_ports_cflag_show(struct device *p,
{
struct board_t *bd;
int count = 0;
int i = 0;
int i;
bd = dgap_verify_board(p);
if (!bd)
@ -5851,7 +5844,7 @@ static ssize_t dgap_ports_oflag_show(struct device *p,
{
struct board_t *bd;
int count = 0;
int i = 0;
int i;
bd = dgap_verify_board(p);
if (!bd)
@ -5871,7 +5864,7 @@ static ssize_t dgap_ports_lflag_show(struct device *p,
{
struct board_t *bd;
int count = 0;
int i = 0;
int i;
bd = dgap_verify_board(p);
if (!bd)
@ -5891,7 +5884,7 @@ static ssize_t dgap_ports_digi_flag_show(struct device *p,
{
struct board_t *bd;
int count = 0;
int i = 0;
int i;
bd = dgap_verify_board(p);
if (!bd)
@ -5911,7 +5904,7 @@ static ssize_t dgap_ports_rxcount_show(struct device *p,
{
struct board_t *bd;
int count = 0;
int i = 0;
int i;
bd = dgap_verify_board(p);
if (!bd)
@ -5931,7 +5924,7 @@ static ssize_t dgap_ports_txcount_show(struct device *p,
{
struct board_t *bd;
int count = 0;
int i = 0;
int i;
bd = dgap_verify_board(p);
if (!bd)
@ -6257,11 +6250,11 @@ static ssize_t dgap_tty_name_show(struct device *d,
struct un_t *un;
int cn;
int bn;
struct cnode *cptr = NULL;
struct cnode *cptr;
int found = FALSE;
int ncount = 0;
int starto = 0;
int i = 0;
int i;
if (!d)
return 0;
@ -6401,7 +6394,7 @@ static int dgap_parsefile(char **in, int remove)
{
struct cnode *p, *brd, *line, *conc;
int rc;
char *s = NULL;
char *s;
int linecnt = 0;
p = &dgap_head;
@ -7317,7 +7310,7 @@ static int dgap_checknode(struct cnode *p)
*/
static uint dgap_config_get_useintr(struct board_t *bd)
{
struct cnode *p = NULL;
struct cnode *p;
if (!bd)
return 0;
@ -7343,7 +7336,7 @@ static uint dgap_config_get_useintr(struct board_t *bd)
*/
static uint dgap_config_get_altpin(struct board_t *bd)
{
struct cnode *p = NULL;
struct cnode *p;
if (!bd)
return 0;
@ -7370,7 +7363,7 @@ static uint dgap_config_get_altpin(struct board_t *bd)
*/
static struct cnode *dgap_find_config(int type, int bus, int slot)
{
struct cnode *p, *prev = NULL, *prev2 = NULL, *found = NULL;
struct cnode *p, *prev, *prev2, *found;
p = &dgap_head;
@ -7435,7 +7428,7 @@ static struct cnode *dgap_find_config(int type, int bus, int slot)
static uint dgap_config_get_num_prts(struct board_t *bd)
{
int count = 0;
struct cnode *p = NULL;
struct cnode *p;
if (!bd)
return 0;
@ -7464,8 +7457,8 @@ static uint dgap_config_get_num_prts(struct board_t *bd)
static char *dgap_create_config_string(struct board_t *bd, char *string)
{
char *ptr = string;
struct cnode *p = NULL;
struct cnode *q = NULL;
struct cnode *p;
struct cnode *q;
int speed;
if (!bd) {