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Commit 1904593d authored by Alexander Viro's avatar Alexander Viro Committed by Linus Torvalds
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[PATCH] mxser annotations and compile fixes 

 a) __user annotations
 b) NULL noise removals
 c) added missing ifdef CONFIG_PCI around the loop over mxser_pcibrds
    during init.
 d) declaration of CMSPAR in case if it had been undefined moved up
    prior to the first use
Signed-off-by: default avatarAl Viro <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 9048b51e
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Showing with 47 additions and 43 deletions
drivers/char/mxser.c
View file @ 1904593d
......@@ -401,7 +401,7 @@ static int mxser_chars_in_buffer(struct tty_struct *);
static void mxser_flush_chars(struct tty_struct *);
static void mxser_put_char(struct tty_struct *, unsigned char);
static int mxser_ioctl(struct tty_struct *, struct file *, uint, ulong);
static int mxser_ioctl_special(unsigned int, unsigned long);
static int mxser_ioctl_special(unsigned int, void __user *);
static void mxser_throttle(struct tty_struct *);
static void mxser_unthrottle(struct tty_struct *);
static void mxser_set_termios(struct tty_struct *, struct termios *);
......@@ -417,9 +417,9 @@ static int mxser_block_til_ready(struct tty_struct *, struct file *, struct mxse
static int mxser_startup(struct mxser_struct *);
static void mxser_shutdown(struct mxser_struct *);
static int mxser_change_speed(struct mxser_struct *, struct termios *old_termios);
static int mxser_get_serial_info(struct mxser_struct *, struct serial_struct *);
static int mxser_set_serial_info(struct mxser_struct *, struct serial_struct *);
static int mxser_get_lsr_info(struct mxser_struct *, unsigned int *);
static int mxser_get_serial_info(struct mxser_struct *, struct serial_struct __user *);
static int mxser_set_serial_info(struct mxser_struct *, struct serial_struct __user *);
static int mxser_get_lsr_info(struct mxser_struct *, unsigned int __user *);
static void mxser_send_break(struct mxser_struct *, int);
static int mxser_tiocmget(struct tty_struct *, struct file *);
static int mxser_tiocmset(struct tty_struct *, struct file *, unsigned int, unsigned int);
......@@ -834,6 +834,7 @@ static int mxser_init(void)
}
/* start finding PCI board here */
#ifdef CONFIG_PCI
n = (sizeof(mxser_pcibrds) / sizeof(mxser_pcibrds[0])) - 1;
index = 0;
b = 0;
......@@ -875,6 +876,7 @@ static int mxser_init(void)
m++;
}
}
#endif
ret1 = 0;
if (!(ret1 = tty_register_driver(mxvar_sdriver))) {
......@@ -968,7 +970,7 @@ static int mxser_open(struct tty_struct *tty, struct file *filp)
*tty->termios = info->normal_termios;
else
*tty->termios = info->callout_termios;
mxser_change_speed(info, 0);
mxser_change_speed(info, NULL);
}
info->session = current->signal->session;
......@@ -1084,7 +1086,7 @@ static void mxser_close(struct tty_struct *tty, struct file *filp)
tty->closing = 0;
info->event = 0;
info->tty = 0;
info->tty = NULL;
if (info->blocked_open) {
if (info->close_delay) {
set_current_state(TASK_INTERRUPTIBLE);
......@@ -1223,12 +1225,13 @@ static int mxser_ioctl(struct tty_struct *tty, struct file *file, unsigned int c
struct mxser_struct *info = (struct mxser_struct *) tty->driver_data;
int retval;
struct async_icount cprev, cnow; /* kernel counter temps */
struct serial_icounter_struct *p_cuser; /* user space */
struct serial_icounter_struct __user *p_cuser;
unsigned long templ;
unsigned long flags;
void __user *argp = (void __user *)arg;
if (tty->index == MXSER_PORTS)
return (mxser_ioctl_special(cmd, arg));
return (mxser_ioctl_special(cmd, argp));
// following add by Victor Yu. 01-05-2004
if (cmd == MOXA_SET_OP_MODE || cmd == MOXA_GET_OP_MODE) {
......@@ -1239,7 +1242,7 @@ static int mxser_ioctl(struct tty_struct *tty, struct file *file, unsigned int c
p = info->port % 4;
if (cmd == MOXA_SET_OP_MODE) {
if (get_user(opmode, (int *) arg))
if (get_user(opmode, (int __user *) argp))
return -EFAULT;
if (opmode != RS232_MODE && opmode != RS485_2WIRE_MODE && opmode != RS422_MODE && opmode != RS485_4WIRE_MODE)
return -EFAULT;
......@@ -1253,7 +1256,7 @@ static int mxser_ioctl(struct tty_struct *tty, struct file *file, unsigned int c
shiftbit = p * 2;
opmode = inb(info->opmode_ioaddr) >> shiftbit;
opmode &= OP_MODE_MASK;
if (copy_to_user((int *) arg, &opmode, sizeof(int)))
if (copy_to_user(argp, &opmode, sizeof(int)))
return -EFAULT;
}
return 0;
......@@ -1281,19 +1284,19 @@ static int mxser_ioctl(struct tty_struct *tty, struct file *file, unsigned int c
mxser_send_break(info, arg ? arg * (HZ / 10) : HZ / 4);
return (0);
case TIOCGSOFTCAR:
return put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long *) arg);
return put_user(C_CLOCAL(tty) ? 1 : 0, (unsigned long __user *) argp);
case TIOCSSOFTCAR:
if (get_user(templ, (unsigned long *) arg))
if (get_user(templ, (unsigned long __user *) argp))
return -EFAULT;
arg = templ;
tty->termios->c_cflag = ((tty->termios->c_cflag & ~CLOCAL) | (arg ? CLOCAL : 0));
return (0);
case TIOCGSERIAL:
return (mxser_get_serial_info(info, (struct serial_struct *) arg));
return mxser_get_serial_info(info, argp);
case TIOCSSERIAL:
return (mxser_set_serial_info(info, (struct serial_struct *) arg));
return mxser_set_serial_info(info, argp);
case TIOCSERGETLSR: /* Get line status register */
return (mxser_get_lsr_info(info, (unsigned int *) arg));
return mxser_get_lsr_info(info, argp);
/*
* Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change
* - mask passed in arg for lines of interest
......@@ -1340,7 +1343,7 @@ static int mxser_ioctl(struct tty_struct *tty, struct file *file, unsigned int c
spin_lock_irqsave(&info->slock, flags);
cnow = info->icount;
spin_unlock_irqrestore(&info->slock, flags);
p_cuser = (struct serial_icounter_struct *) arg;
p_cuser = argp;
/* modified by casper 1/11/2000 */
if (put_user(cnow.frame, &p_cuser->frame))
return -EFAULT;
......@@ -1364,7 +1367,7 @@ static int mxser_ioctl(struct tty_struct *tty, struct file *file, unsigned int c
/* */
return 0;
case MOXA_HighSpeedOn:
return put_user(info->baud_base != 115200 ? 1 : 0, (int *) arg);
return put_user(info->baud_base != 115200 ? 1 : 0, (int __user *) argp);
case MOXA_SDS_RSTICOUNTER:{
info->mon_data.rxcnt = 0;
......@@ -1374,13 +1377,13 @@ static int mxser_ioctl(struct tty_struct *tty, struct file *file, unsigned int c
// (above) added by James.
case MOXA_ASPP_SETBAUD:{
long baud;
if (get_user(baud, (long *) arg))
if (get_user(baud, (long __user *) argp))
return -EFAULT;
mxser_set_baud(info, baud);
return 0;
}
case MOXA_ASPP_GETBAUD:
if (copy_to_user((long *) arg, &info->realbaud, sizeof(long)))
if (copy_to_user(argp, &info->realbaud, sizeof(long)))
return -EFAULT;
return 0;
......@@ -1394,7 +1397,7 @@ static int mxser_ioctl(struct tty_struct *tty, struct file *file, unsigned int c
len += (lsr ? 0 : 1);
if (copy_to_user((int *) arg, &len, sizeof(int)))
if (copy_to_user(argp, &len, sizeof(int)))
return -EFAULT;
return 0;
......@@ -1423,7 +1426,7 @@ static int mxser_ioctl(struct tty_struct *tty, struct file *file, unsigned int c
info->mon_data.hold_reason &= ~NPPI_NOTIFY_CTSHOLD;
if (copy_to_user((struct mxser_mon *) arg, &(info->mon_data), sizeof(struct mxser_mon)))
if (copy_to_user(argp, &info->mon_data, sizeof(struct mxser_mon)))
return -EFAULT;
return 0;
......@@ -1431,7 +1434,7 @@ static int mxser_ioctl(struct tty_struct *tty, struct file *file, unsigned int c
}
case MOXA_ASPP_LSTATUS:{
if (copy_to_user((struct mxser_mon *) arg, &(info->err_shadow), sizeof(unsigned char)))
if (copy_to_user(argp, &info->err_shadow, sizeof(unsigned char)))
return -EFAULT;
info->err_shadow = 0;
......@@ -1440,10 +1443,10 @@ static int mxser_ioctl(struct tty_struct *tty, struct file *file, unsigned int c
}
case MOXA_SET_BAUD_METHOD:{
int method;
if (get_user(method, (int *) arg))
if (get_user(method, (int __user *) argp))
return -EFAULT;
mxser_set_baud_method[info->port] = method;
if (copy_to_user((int *) arg, &method, sizeof(int)))
if (copy_to_user(argp, &method, sizeof(int)))
return -EFAULT;
return 0;
......@@ -1454,22 +1457,26 @@ static int mxser_ioctl(struct tty_struct *tty, struct file *file, unsigned int c
return 0;
}
static int mxser_ioctl_special(unsigned int cmd, unsigned long arg)
#ifndef CMSPAR
#define CMSPAR 010000000000
#endif
static int mxser_ioctl_special(unsigned int cmd, void __user *argp)
{
int i, result, status;
switch (cmd) {
case MOXA_GET_CONF:
if (copy_to_user((struct mxser_hwconf *) arg, mxsercfg, sizeof(struct mxser_hwconf) * 4))
if (copy_to_user(argp, mxsercfg, sizeof(struct mxser_hwconf) * 4))
return -EFAULT;
return 0;
case MOXA_GET_MAJOR:
if (copy_to_user((int *) arg, &ttymajor, sizeof(int)))
if (copy_to_user(argp, &ttymajor, sizeof(int)))
return -EFAULT;
return 0;
case MOXA_GET_CUMAJOR:
if (copy_to_user((int *) arg, &calloutmajor, sizeof(int)))
if (copy_to_user(argp, &calloutmajor, sizeof(int)))
return -EFAULT;
return 0;
......@@ -1479,9 +1486,9 @@ static int mxser_ioctl_special(unsigned int cmd, unsigned long arg)
if (mxvar_table[i].base)
result |= (1 << i);
}
return put_user(result, (unsigned long *) arg);
return put_user(result, (unsigned long __user *) argp);
case MOXA_GETDATACOUNT:
if (copy_to_user((struct mxser_log *) arg, &mxvar_log, sizeof(mxvar_log)))
if (copy_to_user(argp, &mxvar_log, sizeof(mxvar_log)))
return -EFAULT;
return (0);
case MOXA_GETMSTATUS:
......@@ -1516,7 +1523,7 @@ static int mxser_ioctl_special(unsigned int cmd, unsigned long arg)
else
GMStatus[i].cts = 0;
}
if (copy_to_user((struct mxser_mstatus *) arg, GMStatus, sizeof(struct mxser_mstatus) * MXSER_PORTS))
if (copy_to_user(argp, GMStatus, sizeof(struct mxser_mstatus) * MXSER_PORTS))
return -EFAULT;
return 0;
case MOXA_ASPP_MON_EXT:{
......@@ -1584,7 +1591,7 @@ static int mxser_ioctl_special(unsigned int cmd, unsigned long arg)
mon_data_ext.iftype[i] = opmode;
}
if (copy_to_user((struct mxser_mon_ext *) arg, &mon_data_ext, sizeof(struct mxser_mon_ext)))
if (copy_to_user(argp, &mon_data_ext, sizeof(struct mxser_mon_ext)))
return -EFAULT;
return 0;
......@@ -1829,7 +1836,7 @@ void mxser_hangup(struct tty_struct *tty)
info->event = 0;
info->count = 0;
info->flags &= ~ASYNC_NORMAL_ACTIVE;
info->tty = 0;
info->tty = NULL;
wake_up_interruptible(&info->open_wait);
}
......@@ -1866,7 +1873,7 @@ static irqreturn_t mxser_interrupt(int irq, void *dev_id, struct pt_regs *regs)
int pass_counter = 0;
int handled = IRQ_NONE;
port = 0;
port = NULL;
//spin_lock(&gm_lock);
for (i = 0; i < MXSER_BOARDS; i++) {
......@@ -2412,7 +2419,7 @@ static int mxser_startup(struct mxser_struct *info)
* and set the speed of the serial port
*/
spin_unlock_irqrestore(&info->slock, flags);
mxser_change_speed(info, 0);
mxser_change_speed(info, NULL);
info->flags |= ASYNC_INITIALIZED;
return (0);
......@@ -2442,7 +2449,7 @@ static void mxser_shutdown(struct mxser_struct *info)
*/
if (info->xmit_buf) {
free_page((unsigned long) info->xmit_buf);
info->xmit_buf = 0;
info->xmit_buf = NULL;
}
info->IER = 0;
......@@ -2591,9 +2598,6 @@ static int mxser_change_speed(struct mxser_struct *info, struct termios *old_ter
cval |= 0x04;
if (cflag & PARENB)
cval |= UART_LCR_PARITY;
#ifndef CMSPAR
#define CMSPAR 010000000000
#endif
if (!(cflag & PARODD)) {
cval |= UART_LCR_EPAR;
}
......@@ -2807,7 +2811,7 @@ static int mxser_set_baud(struct mxser_struct *info, long newspd)
* friends of mxser_ioctl()
* ------------------------------------------------------------
*/
static int mxser_get_serial_info(struct mxser_struct *info, struct serial_struct *retinfo)
static int mxser_get_serial_info(struct mxser_struct *info, struct serial_struct __user *retinfo)
{
struct serial_struct tmp;
......@@ -2829,7 +2833,7 @@ static int mxser_get_serial_info(struct mxser_struct *info, struct serial_struct
return (0);
}
static int mxser_set_serial_info(struct mxser_struct *info, struct serial_struct *new_info)
static int mxser_set_serial_info(struct mxser_struct *info, struct serial_struct __user *new_info)
{
struct serial_struct new_serial;
unsigned int flags;
......@@ -2869,7 +2873,7 @@ static int mxser_set_serial_info(struct mxser_struct *info, struct serial_struct
/* */
if (info->flags & ASYNC_INITIALIZED) {
if (flags != (info->flags & ASYNC_SPD_MASK)) {
mxser_change_speed(info, 0);
mxser_change_speed(info, NULL);
}
} else {
retval = mxser_startup(info);
......@@ -2887,7 +2891,7 @@ static int mxser_set_serial_info(struct mxser_struct *info, struct serial_struct
* transmit holding register is empty. This functionality
* allows an RS485 driver to be written in user space.
*/
static int mxser_get_lsr_info(struct mxser_struct *info, unsigned int *value)
static int mxser_get_lsr_info(struct mxser_struct *info, unsigned int __user *value)
{
unsigned char status;
unsigned int result;
......
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