Merge branch 'drm-forlinus' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied...

[pandora-kernel.git] / drivers / char / amiserial.c

diff --git a/drivers/char/amiserial.c b/drivers/char/amiserial.c
index 10c81ec..667a21c 100644 (file)
--- 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;
@@ -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: