diff options
Diffstat (limited to 'drivers/char/amiserial.c')
| -rw-r--r-- | drivers/char/amiserial.c | 55 |
1 files changed, 24 insertions, 31 deletions
diff --git a/drivers/char/amiserial.c b/drivers/char/amiserial.c index a124f8c5d062d..667a21c72edbd 100644 --- a/drivers/char/amiserial.c +++ b/drivers/char/amiserial.c @@ -99,6 +99,7 @@ static char *serial_version = "4.30"; #define _INLINE_ inline #endif +#define custom amiga_custom static char *serial_name = "Amiga-builtin serial driver"; static struct tty_driver *serial_driver; @@ -116,7 +117,7 @@ static void rs_wait_until_sent(struct tty_struct *tty, int timeout); static struct serial_state rs_table[1]; -#define NR_PORTS (sizeof(rs_table)/sizeof(struct serial_state)) +#define NR_PORTS ARRAY_SIZE(rs_table) /* * tmp_buf is used as a temporary buffer by serial_write. We need to @@ -265,8 +266,9 @@ static _INLINE_ void receive_chars(struct async_struct *info) int status; int serdatr; struct tty_struct *tty = info->tty; - unsigned char ch; + unsigned char ch, flag; struct async_icount *icount; + int oe = 0; icount = &info->state->icount; @@ -282,15 +284,12 @@ static _INLINE_ void receive_chars(struct async_struct *info) status |= UART_LSR_OE; ch = serdatr & 0xff; - if (tty->flip.count >= TTY_FLIPBUF_SIZE) - goto ignore_char; - *tty->flip.char_buf_ptr = ch; icount->rx++; #ifdef SERIAL_DEBUG_INTR printk("DR%02x:%02x...", ch, status); #endif - *tty->flip.flag_buf_ptr = 0; + flag = TTY_NORMAL; /* * We don't handle parity or frame errors - but I have left @@ -319,7 +318,7 @@ static _INLINE_ void receive_chars(struct async_struct *info) * should be ignored. */ if (status & info->ignore_status_mask) - goto ignore_char; + goto out; status &= info->read_status_mask; @@ -327,33 +326,28 @@ static _INLINE_ void receive_chars(struct async_struct *info) #ifdef SERIAL_DEBUG_INTR printk("handling break...."); #endif - *tty->flip.flag_buf_ptr = TTY_BREAK; + flag = TTY_BREAK; if (info->flags & ASYNC_SAK) do_SAK(tty); } else if (status & UART_LSR_PE) - *tty->flip.flag_buf_ptr = TTY_PARITY; + flag = TTY_PARITY; else if (status & UART_LSR_FE) - *tty->flip.flag_buf_ptr = TTY_FRAME; + flag = TTY_FRAME; if (status & UART_LSR_OE) { /* * Overrun is special, since it's * reported immediately, and doesn't * affect the current character */ - if (tty->flip.count < TTY_FLIPBUF_SIZE) { - tty->flip.count++; - tty->flip.flag_buf_ptr++; - tty->flip.char_buf_ptr++; - *tty->flip.flag_buf_ptr = TTY_OVERRUN; - } + oe = 1; } } - tty->flip.flag_buf_ptr++; - tty->flip.char_buf_ptr++; - tty->flip.count++; - ignore_char: - + tty_insert_flip_char(tty, ch, flag); + if (oe == 1) + tty_insert_flip_char(tty, 0, TTY_OVERRUN); tty_flip_buffer_push(tty); +out: + return; } static _INLINE_ void transmit_chars(struct async_struct *info) @@ -1095,7 +1089,7 @@ static void rs_unthrottle(struct tty_struct * tty) */ static int get_serial_info(struct async_struct * info, - struct serial_struct * retinfo) + struct serial_struct __user * retinfo) { struct serial_struct tmp; struct serial_state *state = info->state; @@ -1119,7 +1113,7 @@ static int get_serial_info(struct async_struct * info, } static int set_serial_info(struct async_struct * info, - struct serial_struct * new_info) + struct serial_struct __user * new_info) { struct serial_struct new_serial; struct serial_state old_state, *state; @@ -1200,7 +1194,7 @@ check_and_exit: * transmit holding register is empty. This functionality * allows an RS485 driver to be written in user space. */ -static int get_lsr_info(struct async_struct * info, unsigned int *value) +static int get_lsr_info(struct async_struct * info, unsigned int __user *value) { unsigned char status; unsigned int result; @@ -1291,6 +1285,7 @@ static int rs_ioctl(struct tty_struct *tty, struct file * file, struct async_struct * info = (struct async_struct *)tty->driver_data; struct async_icount cprev, cnow; /* kernel counter temps */ struct serial_icounter_struct icount; + void __user *argp = (void __user *)arg; unsigned long flags; if (serial_paranoia_check(info, tty->name, "rs_ioctl")) @@ -1305,19 +1300,17 @@ static int rs_ioctl(struct tty_struct *tty, struct file * file, switch (cmd) { case TIOCGSERIAL: - return get_serial_info(info, - (struct serial_struct *) arg); + return get_serial_info(info, argp); case TIOCSSERIAL: - return set_serial_info(info, - (struct serial_struct *) arg); + return set_serial_info(info, argp); case TIOCSERCONFIG: return 0; case TIOCSERGETLSR: /* Get line status register */ - return get_lsr_info(info, (unsigned int *) arg); + return get_lsr_info(info, argp); case TIOCSERGSTRUCT: - if (copy_to_user((struct async_struct *) arg, + if (copy_to_user(argp, info, sizeof(struct async_struct))) return -EFAULT; return 0; @@ -1376,7 +1369,7 @@ static int rs_ioctl(struct tty_struct *tty, struct file * file, icount.brk = cnow.brk; icount.buf_overrun = cnow.buf_overrun; - if (copy_to_user((void *)arg, &icount, sizeof(icount))) + if (copy_to_user(argp, &icount, sizeof(icount))) return -EFAULT; return 0; case TIOCSERGWILD: |