Skip to content

L
linux
Commit fb100b6e authored by Alan Cox's avatar Alan Cox Committed by Linus Torvalds
Browse files
Options

esp: clean up to modern coding style 

Signed-off-by: default avatarAlan Cox <alan@redhat.com>
Cc: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 191260a0
Show whitespace changes
Inline Side-by-side
Showing with 283 additions and 308 deletions
drivers/char/esp.c
View file @ fb100b6e
......@@ -61,11 +61,11 @@
#include <linux/bitops.h>
#include <asm/system.h>
#include <asm/io.h>
#include <linux/io.h>
#include <asm/dma.h>
#include <linux/slab.h>
#include <asm/uaccess.h>
#include <linux/uaccess.h>
#include <linux/hayesesp.h>
......@@ -127,8 +127,10 @@ static struct tty_driver *esp_driver;
#undef SERIAL_DEBUG_FLOW
#if defined(MODULE) && defined(SERIAL_DEBUG_MCOUNT)
#define DBG_CNT(s) printk("(%s): [%x] refc=%d, serc=%d, ttyc=%d -> %s\n", \
tty->name, (info->flags), serial_driver.refcount,info->count,tty->count,s)
#define DBG_CNT(s) printk(KERN_DEBUG "(%s): [%x] refc=%d, serc=%d, ttyc=%d -> %s\n", \
tty->name, info->flags, \
serial_driver.refcount, \
info->count, tty->count, s)
#else
#define DBG_CNT(s)
#endif
......@@ -189,7 +191,7 @@ static inline void serial_out(struct esp_struct *info, int offset,
*/
static void rs_stop(struct tty_struct *tty)
{
struct esp_struct *info = (struct esp_struct *)tty->driver_data;
struct esp_struct *info = tty->driver_data;
unsigned long flags;
if (serial_paranoia_check(info, tty->name, "rs_stop"))
......@@ -206,7 +208,7 @@ static void rs_stop(struct tty_struct *tty)
static void rs_start(struct tty_struct *tty)
{
struct esp_struct *info = (struct esp_struct *)tty->driver_data;
struct esp_struct *info = tty->driver_data;
unsigned long flags;
if (serial_paranoia_check(info, tty->name, "rs_start"))
......@@ -325,8 +327,7 @@ static inline void receive_chars_pio(struct esp_struct *info, int num_bytes)
flag = TTY_BREAK;
if (info->flags & ASYNC_SAK)
do_SAK(tty);
}
else if (err_buf->data[i] & 0x02)
} else if (err_buf->data[i] & 0x02)
flag = TTY_FRAME;
else if (err_buf->data[i] & 0x01)
flag = TTY_PARITY;
......@@ -341,22 +342,28 @@ static inline void receive_chars_pio(struct esp_struct *info, int num_bytes)
release_pio_buffer(err_buf);
}
static inline void receive_chars_dma(struct esp_struct *info, int num_bytes)
static void program_isa_dma(int dma, int dir, unsigned long addr, int len)
{
unsigned long flags;
info->stat_flags &= ~ESP_STAT_RX_TIMEOUT;
dma_bytes = num_bytes;
info->stat_flags |= ESP_STAT_DMA_RX;
flags=claim_dma_lock();
flags = claim_dma_lock();
disable_dma(dma);
clear_dma_ff(dma);
set_dma_mode(dma, DMA_MODE_READ);
set_dma_addr(dma, isa_virt_to_bus(dma_buffer));
set_dma_count(dma, dma_bytes);
set_dma_mode(dma, dir);
set_dma_addr(dma, addr);
set_dma_count(dma, len);
enable_dma(dma);
release_dma_lock(flags);
}
static void receive_chars_dma(struct esp_struct *info, int num_bytes)
{
info->stat_flags &= ~ESP_STAT_RX_TIMEOUT;
dma_bytes = num_bytes;
info->stat_flags |= ESP_STAT_DMA_RX;
program_isa_dma(dma, DMA_MODE_READ, isa_virt_to_bus(dma_buffer),
dma_bytes);
serial_out(info, UART_ESI_CMD1, ESI_START_DMA_RX);
}
......@@ -367,7 +374,7 @@ static inline void receive_chars_dma_done(struct esp_struct *info,
int num_bytes;
unsigned long flags;
flags=claim_dma_lock();
flags = claim_dma_lock();
disable_dma(dma);
clear_dma_ff(dma);
......@@ -393,13 +400,13 @@ static inline void receive_chars_dma_done(struct esp_struct *info,
do_SAK(tty);
} else if (status & 0x08) {
statflag = TTY_FRAME;
(info->icount.frame)++;
}
else if (status & 0x04) {
info->icount.frame++;
} else if (status & 0x04) {
statflag = TTY_PARITY;
(info->icount.parity)++;
info->icount.parity++;
}
tty_insert_flip_char(tty, dma_buffer[num_bytes - 1], statflag);
tty_insert_flip_char(tty, dma_buffer[num_bytes - 1],
statflag);
}
tty_schedule_flip(tty);
}
......@@ -484,8 +491,6 @@ static inline void transmit_chars_pio(struct esp_struct *info,
/* Caller must hold info->lock */
static inline void transmit_chars_dma(struct esp_struct *info, int num_bytes)
{
unsigned long flags;
dma_bytes = num_bytes;
if (info->xmit_tail + dma_bytes <= ESP_XMIT_SIZE) {
......@@ -518,15 +523,8 @@ static inline void transmit_chars_dma(struct esp_struct *info, int num_bytes)
info->stat_flags |= ESP_STAT_DMA_TX;
flags=claim_dma_lock();
disable_dma(dma);
clear_dma_ff(dma);
set_dma_mode(dma, DMA_MODE_WRITE);
set_dma_addr(dma, isa_virt_to_bus(dma_buffer));
set_dma_count(dma, dma_bytes);
enable_dma(dma);
release_dma_lock(flags);
program_isa_dma(dma, DMA_MODE_WRITE, isa_virt_to_bus(dma_buffer),
dma_bytes);
serial_out(info, UART_ESI_CMD1, ESI_START_DMA_TX);
}
......@@ -535,8 +533,7 @@ static inline void transmit_chars_dma_done(struct esp_struct *info)
int num_bytes;
unsigned long flags;
flags=claim_dma_lock();
flags = claim_dma_lock();
disable_dma(dma);
clear_dma_ff(dma);
......@@ -548,14 +545,8 @@ static inline void transmit_chars_dma_done(struct esp_struct *info)
dma_bytes -= num_bytes;
memmove(dma_buffer, dma_buffer + num_bytes, dma_bytes);
flags=claim_dma_lock();
disable_dma(dma);
clear_dma_ff(dma);
set_dma_mode(dma, DMA_MODE_WRITE);
set_dma_addr(dma, isa_virt_to_bus(dma_buffer));
set_dma_count(dma, dma_bytes);
enable_dma(dma);
release_dma_lock(flags);
program_isa_dma(dma, DMA_MODE_WRITE,
isa_virt_to_bus(dma_buffer), dma_bytes);
serial_out(info, UART_ESI_CMD1, ESI_START_DMA_TX);
} else {
......@@ -564,7 +555,7 @@ static inline void transmit_chars_dma_done(struct esp_struct *info)
}
}
static inline void check_modem_status(struct esp_struct *info)
static void check_modem_status(struct esp_struct *info)
{
int status;
......@@ -605,7 +596,7 @@ static inline void check_modem_status(struct esp_struct *info)
*/
static irqreturn_t rs_interrupt_single(int irq, void *dev_id)
{
struct esp_struct * info;
struct esp_struct *info;
unsigned err_status;
unsigned int scratch;
......@@ -722,7 +713,7 @@ static irqreturn_t rs_interrupt_single(int irq, void *dev_id)
* ---------------------------------------------------------------
*/
static inline void esp_basic_init(struct esp_struct * info)
static void esp_basic_init(struct esp_struct *info)
{
/* put ESPC in enhanced mode */
serial_out(info, UART_ESI_CMD1, ESI_SET_MODE);
......@@ -783,10 +774,10 @@ static inline void esp_basic_init(struct esp_struct * info)
serial_out(info, UART_ESI_CMD2, 0xff);
}
static int startup(struct esp_struct * info)
static int startup(struct esp_struct *info)
{
unsigned long flags;
int retval=0;
int retval = 0;
unsigned int num_chars;
spin_lock_irqsave(&info->lock, flags);
......@@ -802,7 +793,8 @@ static int startup(struct esp_struct * info)
}
#ifdef SERIAL_DEBUG_OPEN
printk("starting up ttys%d (irq %d)...", info->line, info->irq);
printk(KERN_DEBUG "starting up ttys%d (irq %d)...",
info->line, info->irq);
#endif
/* Flush the RX buffer. Using the ESI flush command may cause */
......@@ -918,7 +910,7 @@ static int startup(struct esp_struct * info)
* This routine will shutdown a serial port; interrupts are disabled, and
* DTR is dropped if the hangup on close termio flag is on.
*/
static void shutdown(struct esp_struct * info)
static void shutdown(struct esp_struct *info)
{
unsigned long flags, f;
......@@ -941,7 +933,7 @@ static void shutdown(struct esp_struct * info)
/* stop a DMA transfer on the port being closed */
/* DMA lock is higher priority always */
if (info->stat_flags & (ESP_STAT_DMA_RX | ESP_STAT_DMA_TX)) {
f=claim_dma_lock();
f = claim_dma_lock();
disable_dma(dma);
clear_dma_ff(dma);
release_dma_lock(f);
......@@ -1005,7 +997,7 @@ static void change_speed(struct esp_struct *info)
{
unsigned short port;
int quot = 0;
unsigned cflag,cval;
unsigned cflag, cval;
int baud, bits;
unsigned char flow1 = 0, flow2 = 0;
unsigned long flags;
......@@ -1037,14 +1029,12 @@ static void change_speed(struct esp_struct *info)
if (cflag & CMSPAR)
cval |= UART_LCR_SPAR;
#endif
baud = tty_get_baud_rate(info->tty);
if (baud == 38400 &&
((info->flags & ASYNC_SPD_MASK) == ASYNC_SPD_CUST))
quot = info->custom_divisor;
else {
if (baud == 134)
/* Special case since 134 is really 134.5 */
if (baud == 134) /* Special case since 134 is really 134.5 */
quot = (2*BASE_BAUD / 269);
else if (baud)
quot = BASE_BAUD / baud;
......@@ -1053,6 +1043,11 @@ static void change_speed(struct esp_struct *info)
if (!quot)
quot = BASE_BAUD / 9600;
if (baud) {
/* Actual rate */
baud = BASE_BAUD/quot;
tty_encode_baud_rate(info->tty, baud, baud);
}
info->timeout = ((1024 * HZ * bits * quot) / BASE_BAUD) + (HZ / 50);
/* CTS flow control flag and modem status interrupts */
......@@ -1066,10 +1061,8 @@ static void change_speed(struct esp_struct *info)
info->flags &= ~ASYNC_CTS_FLOW;
if (cflag & CLOCAL)
info->flags &= ~ASYNC_CHECK_CD;
else {
else
info->flags |= ASYNC_CHECK_CD;
/* info->IER |= UART_IER_MSI; */
}
/*
* Set up parity check flag
......@@ -1158,7 +1151,7 @@ static void change_speed(struct esp_struct *info)
static int rs_put_char(struct tty_struct *tty, unsigned char ch)
{
struct esp_struct *info = (struct esp_struct *)tty->driver_data;
struct esp_struct *info = tty->driver_data;
unsigned long flags;
int ret = 0;
......@@ -1181,7 +1174,7 @@ static int rs_put_char(struct tty_struct *tty, unsigned char ch)
static void rs_flush_chars(struct tty_struct *tty)
{
struct esp_struct *info = (struct esp_struct *)tty->driver_data;
struct esp_struct *info = tty->driver_data;
unsigned long flags;
if (serial_paranoia_check(info, tty->name, "rs_flush_chars"))
......@@ -1201,11 +1194,11 @@ static void rs_flush_chars(struct tty_struct *tty)
spin_unlock_irqrestore(&info->lock, flags);
}
static int rs_write(struct tty_struct * tty,
static int rs_write(struct tty_struct *tty,
const unsigned char *buf, int count)
{
int c, t, ret = 0;
struct esp_struct *info = (struct esp_struct *)tty->driver_data;
struct esp_struct *info = tty->driver_data;
unsigned long flags;
if (serial_paranoia_check(info, tty->name, "rs_write"))
......@@ -1255,7 +1248,7 @@ static int rs_write(struct tty_struct * tty,
static int rs_write_room(struct tty_struct *tty)
{
struct esp_struct *info = (struct esp_struct *)tty->driver_data;
struct esp_struct *info = tty->driver_data;
int ret;
unsigned long flags;
......@@ -1273,7 +1266,7 @@ static int rs_write_room(struct tty_struct *tty)
static int rs_chars_in_buffer(struct tty_struct *tty)
{
struct esp_struct *info = (struct esp_struct *)tty->driver_data;
struct esp_struct *info = tty->driver_data;
if (serial_paranoia_check(info, tty->name, "rs_chars_in_buffer"))
return 0;
......@@ -1282,7 +1275,7 @@ static int rs_chars_in_buffer(struct tty_struct *tty)
static void rs_flush_buffer(struct tty_struct *tty)
{
struct esp_struct *info = (struct esp_struct *)tty->driver_data;
struct esp_struct *info = tty->driver_data;
unsigned long flags;
if (serial_paranoia_check(info, tty->name, "rs_flush_buffer"))
......@@ -1301,15 +1294,15 @@ static void rs_flush_buffer(struct tty_struct *tty)
* incoming characters should be throttled.
* ------------------------------------------------------------
*/
static void rs_throttle(struct tty_struct * tty)
static void rs_throttle(struct tty_struct *tty)
{
struct esp_struct *info = (struct esp_struct *)tty->driver_data;
struct esp_struct *info = tty->driver_data;
unsigned long flags;
#ifdef SERIAL_DEBUG_THROTTLE
char buf[64];
printk("throttle %s: %d....\n", tty_name(tty, buf),
tty->ldisc.chars_in_buffer(tty));
tty_chars_in_buffer(tty));
#endif
if (serial_paranoia_check(info, tty->name, "rs_throttle"))
......@@ -1324,15 +1317,15 @@ static void rs_throttle(struct tty_struct * tty)
spin_unlock_irqrestore(&info->lock, flags);
}
static void rs_unthrottle(struct tty_struct * tty)
static void rs_unthrottle(struct tty_struct *tty)
{
struct esp_struct *info = (struct esp_struct *)tty->driver_data;
struct esp_struct *info = tty->driver_data;
unsigned long flags;
#ifdef SERIAL_DEBUG_THROTTLE
char buf[64];
printk("unthrottle %s: %d....\n", tty_name(tty, buf),
tty->ldisc.chars_in_buffer(tty));
printk(KERN_DEBUG "unthrottle %s: %d....\n", tty_name(tty, buf),
tty_chars_in_buffer(tty));
#endif
if (serial_paranoia_check(info, tty->name, "rs_unthrottle"))
......@@ -1353,7 +1346,7 @@ static void rs_unthrottle(struct tty_struct * tty)
* ------------------------------------------------------------
*/
static int get_serial_info(struct esp_struct * info,
static int get_serial_info(struct esp_struct *info,
struct serial_struct __user *retinfo)
{
struct serial_struct tmp;
......@@ -1372,12 +1365,12 @@ static int get_serial_info(struct esp_struct * info,
tmp.custom_divisor = info->custom_divisor;
tmp.hub6 = 0;
unlock_kernel();
if (copy_to_user(retinfo,&tmp,sizeof(*retinfo)))
if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
return -EFAULT;
return 0;
}
static int get_esp_config(struct esp_struct * info,
static int get_esp_config(struct esp_struct *info,
struct hayes_esp_config __user *retinfo)
{
struct hayes_esp_config tmp;
......@@ -1399,7 +1392,7 @@ static int get_esp_config(struct esp_struct * info,
return copy_to_user(retinfo, &tmp, sizeof(*retinfo)) ? -EFAULT : 0;
}
static int set_serial_info(struct esp_struct * info,
static int set_serial_info(struct esp_struct *info,
struct serial_struct __user *new_info)
{
struct serial_struct new_serial;
......@@ -1408,7 +1401,7 @@ static int set_serial_info(struct esp_struct * info,
int retval = 0;
struct esp_struct *current_async;
if (copy_from_user(&new_serial,new_info,sizeof(new_serial)))
if (copy_from_user(&new_serial, new_info, sizeof(new_serial)))
return -EFAULT;
old_info = *info;
......@@ -1514,8 +1507,8 @@ static int set_serial_info(struct esp_struct * info,
return retval;
}
static int set_esp_config(struct esp_struct * info,
struct hayes_esp_config __user * new_info)
static int set_esp_config(struct esp_struct *info,
struct hayes_esp_config __user *new_info)
{
struct hayes_esp_config new_config;
unsigned int change_dma;
......@@ -1557,7 +1550,6 @@ static int set_esp_config(struct esp_struct * info,
if (new_config.dma_channel) {
/* PIO mode to DMA mode transition OR */
/* change current DMA channel */
current_async = ports;
while (current_async) {
......@@ -1567,8 +1559,7 @@ static int set_esp_config(struct esp_struct * info,
} else if (current_async->count)
return -EBUSY;
current_async =
current_async->next_port;
current_async = current_async->next_port;
}
shutdown(info);
......@@ -1587,7 +1578,6 @@ static int set_esp_config(struct esp_struct * info,
spin_unlock_irqrestore(&info->lock, flags);
} else {
/* DMA mode to PIO mode only */
if (info->count > 1)
return -EBUSY;
......@@ -1660,7 +1650,7 @@ static int set_esp_config(struct esp_struct * info,
* transmit holding register is empty. This functionality
* allows an RS485 driver to be written in user space.
*/
static int get_lsr_info(struct esp_struct * info, unsigned int __user *value)
static int get_lsr_info(struct esp_struct *info, unsigned int __user *value)
{
unsigned char status;
unsigned int result;
......@@ -1671,13 +1661,13 @@ static int get_lsr_info(struct esp_struct * info, unsigned int __user *value)
status = serial_in(info, UART_ESI_STAT1);
spin_unlock_irqrestore(&info->lock, flags);
result = ((status & UART_LSR_TEMT) ? TIOCSER_TEMT : 0);
return put_user(result,value);
return put_user(result, value);
}
static int esp_tiocmget(struct tty_struct *tty, struct file *file)
{
struct esp_struct * info = (struct esp_struct *)tty->driver_data;
struct esp_struct *info = tty->driver_data;
unsigned char control, status;
unsigned long flags;
......@@ -1704,7 +1694,7 @@ static int esp_tiocmget(struct tty_struct *tty, struct file *file)
static int esp_tiocmset(struct tty_struct *tty, struct file *file,
unsigned int set, unsigned int clear)
{
struct esp_struct * info = (struct esp_struct *)tty->driver_data;
struct esp_struct *info = tty->driver_data;
unsigned long flags;
if (serial_paranoia_check(info, tty->name, __FUNCTION__))
......@@ -1737,7 +1727,7 @@ static int esp_tiocmset(struct tty_struct *tty, struct file *file,
*/
static void esp_break(struct tty_struct *tty, int break_state)
{
struct esp_struct * info = (struct esp_struct *)tty->driver_data;
struct esp_struct *info = tty->driver_data;
unsigned long flags;
if (serial_paranoia_check(info, tty->name, "esp_break"))
......@@ -1759,10 +1749,10 @@ static void esp_break(struct tty_struct *tty, int break_state)
}
}
static int rs_ioctl(struct tty_struct *tty, struct file * file,
static int rs_ioctl(struct tty_struct *tty, struct file *file,
unsigned int cmd, unsigned long arg)
{
struct esp_struct * info = (struct esp_struct *)tty->driver_data;
struct esp_struct *info = tty->driver_data;
struct async_icount cprev, cnow; /* kernel counter temps */
struct serial_icounter_struct __user *p_cuser; /* user space */
void __user *argp = (void __user *)arg;
......@@ -1789,21 +1779,14 @@ static int rs_ioctl(struct tty_struct *tty, struct file * file,
ret = set_serial_info(info, argp);
unlock_kernel();
return ret;
case TIOCSERCONFIG:
/* do not reconfigure after initial configuration */
return 0;
case TIOCSERGWILD:
return put_user(0L, (unsigned long __user *)argp);
case TIOCSERGETLSR: /* Get line status register */
return get_lsr_info(info, argp);
case TIOCSERSWILD:
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
return 0;
/*
* Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change
* - mask passed in arg for lines of interest
......@@ -1835,13 +1818,12 @@ static int rs_ioctl(struct tty_struct *tty, struct file * file,
((arg & TIOCM_CD) &&
(cnow.dcd != cprev.dcd)) ||
((arg & TIOCM_CTS) &&
(cnow.cts != cprev.cts)) ) {
(cnow.cts != cprev.cts))) {
return 0;
}
cprev = cnow;
}
/* NOTREACHED */
/*
* Get counter of input serial line interrupts (DCD,RI,DSR,CTS)
* Return: write counters to the user passed counter struct
......@@ -1858,7 +1840,6 @@ static int rs_ioctl(struct tty_struct *tty, struct file * file,
put_user(cnow.rng, &p_cuser->rng) ||
put_user(cnow.dcd, &p_cuser->dcd))
return -EFAULT;
return 0;
case TIOCGHAYESESP:
return get_esp_config(info, argp);
......@@ -1875,7 +1856,7 @@ static int rs_ioctl(struct tty_struct *tty, struct file * file,
static void rs_set_termios(struct tty_struct *tty, struct ktermios *old_termios)
{
struct esp_struct *info = (struct esp_struct *)tty->driver_data;
struct esp_struct *info = tty->driver_data;
unsigned long flags;
change_speed(info);
......@@ -1919,9 +1900,9 @@ static void rs_set_termios(struct tty_struct *tty, struct ktermios *old_termios)
* that IRQ if nothing is left in the chain.
* ------------------------------------------------------------
*/
static void rs_close(struct tty_struct *tty, struct file * filp)
static void rs_close(struct tty_struct *tty, struct file *filp)
{
struct esp_struct * info = (struct esp_struct *)tty->driver_data;
struct esp_struct *info = tty->driver_data;
unsigned long flags;
if (!info || serial_paranoia_check(info, tty->name, "rs_close"))
......@@ -1935,9 +1916,10 @@ static void rs_close(struct tty_struct *tty, struct file * filp)
}
#ifdef SERIAL_DEBUG_OPEN
printk("rs_close ttys%d, count = %d\n", info->line, info->count);
printk(KERN_DEBUG "rs_close ttys%d, count = %d\n",
info->line, info->count);
#endif
if ((tty->count == 1) && (info->count != 1)) {
if (tty->count == 1 && info->count != 1) {
/*
* Uh, oh. tty->count is 1, which means that the tty
* structure will be freed. Info->count should always
......@@ -1945,12 +1927,11 @@ static void rs_close(struct tty_struct *tty, struct file * filp)
* one, we've got real problems, since it means the
* serial port won't be shutdown.
*/
printk("rs_close: bad serial port count; tty->count is 1, "
"info->count is %d\n", info->count);
printk(KERN_DEBUG "rs_close: bad serial port count; tty->count is 1, info->count is %d\n", info->count);
info->count = 1;
}
if (--info->count < 0) {
printk("rs_close: bad serial port count for ttys%d: %d\n",
printk(KERN_ERR "rs_close: bad serial port count for ttys%d: %d\n",
info->line, info->count);
info->count = 0;
}
......@@ -2003,9 +1984,8 @@ static void rs_close(struct tty_struct *tty, struct file * filp)
info->tty = NULL;
if (info->blocked_open) {
if (info->close_delay) {
if (info->close_delay)
msleep_interruptible(jiffies_to_msecs(info->close_delay));
}
wake_up_interruptible(&info->open_wait);
}
info->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
......@@ -2018,7 +1998,7 @@ static void rs_close(struct tty_struct *tty, struct file * filp)
static void rs_wait_until_sent(struct tty_struct *tty, int timeout)
{
struct esp_struct *info = (struct esp_struct *)tty->driver_data;
struct esp_struct *info = tty->driver_data;
unsigned long orig_jiffies, char_time;
unsigned long flags;
......@@ -2060,7 +2040,7 @@ static void rs_wait_until_sent(struct tty_struct *tty, int timeout)
*/
static void esp_hangup(struct tty_struct *tty)
{
struct esp_struct * info = (struct esp_struct *)tty->driver_data;
struct esp_struct *info = tty->driver_data;
if (serial_paranoia_check(info, tty->name, "esp_hangup"))
return;
......@@ -2078,7 +2058,7 @@ static void esp_hangup(struct tty_struct *tty)
* esp_open() and friends
* ------------------------------------------------------------
*/
static int block_til_ready(struct tty_struct *tty, struct file * filp,
static int block_til_ready(struct tty_struct *tty, struct file *filp,
struct esp_struct *info)
{
DECLARE_WAITQUEUE(wait, current);
......@@ -2127,7 +2107,7 @@ static int block_til_ready(struct tty_struct *tty, struct file * filp,
retval = 0;
add_wait_queue(&info->open_wait, &wait);
#ifdef SERIAL_DEBUG_OPEN
printk("block_til_ready before block: ttys%d, count = %d\n",
printk(KERN_DEBUG "block_til_ready before block: ttys%d, count = %d\n",
info->line, info->count);
#endif
spin_lock_irqsave(&info->lock, flags);
......@@ -2172,7 +2152,7 @@ static int block_til_ready(struct tty_struct *tty, struct file * filp,
break;
}
#ifdef SERIAL_DEBUG_OPEN
printk("block_til_ready blocking: ttys%d, count = %d\n",
printk(KERN_DEBUG "block_til_ready blocking: ttys%d, count = %d\n",
info->line, info->count);
#endif
spin_unlock_irqrestore(&info->lock, flags);
......@@ -2186,7 +2166,7 @@ static int block_til_ready(struct tty_struct *tty, struct file * filp,
info->blocked_open--;
spin_unlock_irqrestore(&info->lock, flags);
#ifdef SERIAL_DEBUG_OPEN
printk("block_til_ready after blocking: ttys%d, count = %d\n",
printk(KERN_DEBUG "block_til_ready after blocking: ttys%d, count = %d\n",
info->line, info->count);
#endif
if (retval)
......@@ -2201,7 +2181,7 @@ static int block_til_ready(struct tty_struct *tty, struct file * filp,
* the IRQ chain. It also performs the serial-specific
* initialization for the tty structure.
*/
static int esp_open(struct tty_struct *tty, struct file * filp)
static int esp_open(struct tty_struct *tty, struct file *filp)
{
struct esp_struct *info;
int retval, line;
......@@ -2224,7 +2204,7 @@ static int esp_open(struct tty_struct *tty, struct file * filp)
}
#ifdef SERIAL_DEBUG_OPEN
printk("esp_open %s, count = %d\n", tty->name, info->count);
printk(KERN_DEBUG "esp_open %s, count = %d\n", tty->name, info->count);
#endif
spin_lock_irqsave(&info->lock, flags);
info->count++;
......@@ -2243,14 +2223,13 @@ static int esp_open(struct tty_struct *tty, struct file * filp)
retval = block_til_ready(tty, filp, info);
if (retval) {
#ifdef SERIAL_DEBUG_OPEN
printk("esp_open returning after block_til_ready with %d\n",
printk(KERN_DEBUG "esp_open returning after block_til_ready with %d\n",
retval);
#endif
return retval;
}
#ifdef SERIAL_DEBUG_OPEN
printk("esp_open %s successful...", tty->name);
printk(KERN_DEBUG "esp_open %s successful...", tty->name);
#endif
return 0;
}
......@@ -2269,7 +2248,7 @@ static int esp_open(struct tty_struct *tty, struct file * filp)
* driver.
*/
static inline void show_serial_version(void)
static void show_serial_version(void)
{
printk(KERN_INFO "%s version %s (DMA %u)\n",
serial_name, serial_version, dma);
......@@ -2279,7 +2258,7 @@ static inline void show_serial_version(void)
* This routine is called by espserial_init() to initialize a specific serial
* port.
*/
static inline int autoconfig(struct esp_struct * info)
static int autoconfig(struct esp_struct *info)
{
int port_detected = 0;
unsigned long flags;
......@@ -2355,9 +2334,9 @@ static const struct tty_operations esp_ops = {
static int __init espserial_init(void)
{
int i, offset;
struct esp_struct * info;
struct esp_struct *info;
struct esp_struct *last_primary = NULL;
int esp[] = {0x100,0x140,0x180,0x200,0x240,0x280,0x300,0x380};
int esp[] = { 0x100, 0x140, 0x180, 0x200, 0x240, 0x280, 0x300, 0x380 };
esp_driver = alloc_tty_driver(NR_PORTS);
if (!esp_driver)
......@@ -2407,10 +2386,11 @@ static int __init espserial_init(void)
esp_driver->init_termios = tty_std_termios;
esp_driver->init_termios.c_cflag =
B9600 | CS8 | CREAD | HUPCL | CLOCAL;
esp_driver->init_termios.c_ispeed = 9600;
esp_driver->init_termios.c_ospeed = 9600;
esp_driver->flags = TTY_DRIVER_REAL_RAW;
tty_set_operations(esp_driver, &esp_ops);
if (tty_register_driver(esp_driver))
{
if (tty_register_driver(esp_driver)) {
printk(KERN_ERR "Couldn't register esp serial driver");
put_tty_driver(esp_driver);
return 1;
......@@ -2418,8 +2398,7 @@ static int __init espserial_init(void)
info = kzalloc(sizeof(struct esp_struct), GFP_KERNEL);
if (!info)
{
if (!info) {
printk(KERN_ERR "Couldn't allocate memory for esp serial device information\n");
tty_unregister_driver(esp_driver);
put_tty_driver(esp_driver);
......@@ -2482,10 +2461,8 @@ static int __init espserial_init(void)
info->stat_flags |= ESP_STAT_NEVER_DMA;
info = kzalloc(sizeof(struct esp_struct), GFP_KERNEL);
if (!info)
{
if (!info) {
printk(KERN_ERR "Couldn't allocate memory for esp serial device information\n");
/* allow use of the already detected ports */
return 0;
}
......@@ -2515,16 +2492,14 @@ static void __exit espserial_exit(void)
struct esp_struct *temp_async;
struct esp_pio_buffer *pio_buf;
/* printk("Unloading %s: version %s\n", serial_name, serial_version); */
if ((e1 = tty_unregister_driver(esp_driver)))
printk("SERIAL: failed to unregister serial driver (%d)\n",
e1);
e1 = tty_unregister_driver(esp_driver);
if (e1)
printk(KERN_ERR "esp: failed to unregister driver (%d)\n", e1);
put_tty_driver(esp_driver);
while (ports) {
if (ports->port) {
if (ports->port)
release_region(ports->port, REGION_SIZE);
}
temp_async = ports->next_port;
kfree(ports);
ports = temp_async;
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment
GitLab Nexedi Edition | About GitLab | About Nexedi | 沪ICP备2021021310号-2 | 沪ICP备2021021310号-7