Char: mxser, remove special baudrate processing

Let the special baudrate processing on the tty layer.  Also remove
set/get_special_rate ioctls introduced in commit
f64c84a1668930d1ca2b7dbaa92146c2139cb508, since it is no longer needed.

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Reviewed-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/drivers/char/mxser_new.c b/drivers/char/mxser_new.c
index f74734b3407b3d331539e85ed3685d112ea23486..0b25457cda051bc18d0b7591f054624b1fe10666 100644 (file)
--- a/drivers/char/mxser_new.c
+++ b/drivers/char/mxser_new.c
@@ -173,18 +173,6 @@ static struct pci_device_id mxser_pcibrds[] = {
 };
 MODULE_DEVICE_TABLE(pci, mxser_pcibrds);
 
-static int mxvar_baud_table[] = {
-       0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400,
-       4800, 9600, 19200, 38400, 57600, 115200, 230400, 460800, 921600
-};
-static unsigned int mxvar_baud_table1[] = {
-       0, B50, B75, B110, B134, B150, B200, B300, B600, B1200, B1800, B2400,
-       B4800, B9600, B19200, B38400, B57600, B115200, B230400, B460800, B921600
-};
-#define BAUD_TABLE_NO ARRAY_SIZE(mxvar_baud_table)
-
-#define B_SPEC B2000000
-
 static int ioaddr[MXSER_BOARDS] = { 0, 0, 0, 0 };
 static int ttymajor = MXSERMAJOR;
 static int calloutmajor = MXSERCUMAJOR;
@@ -243,10 +231,8 @@ struct mxser_port {
        int rx_trigger;         /* Rx fifo trigger level */
        int rx_low_water;
        int baud_base;          /* max. speed */
-       long realbaud;
        int type;               /* UART type */
        int flags;              /* defined in tty.h */
-       int speed;
 
        int x_char;             /* xon/xoff character */
        int IER;                /* Interrupt Enable Register */
@@ -451,7 +437,6 @@ static int mxser_block_til_ready(struct tty_struct *tty, struct file *filp,
 
 static int mxser_set_baud(struct mxser_port *info, long newspd)
 {
-       unsigned int i;
        int quot = 0, baud;
        unsigned char cval;
 
@@ -464,27 +449,17 @@ static int mxser_set_baud(struct mxser_port *info, long newspd)
        if (newspd > info->max_baud)
                return -1;
 
-       info->realbaud = newspd;
-       for (i = 0; i < BAUD_TABLE_NO; i++)
-              if (newspd == mxvar_baud_table[i])
-                      break;
-       if (i == BAUD_TABLE_NO) {
-               quot = info->baud_base / info->speed;
-               if (info->speed <= 0 || info->speed > info->max_baud)
-                       quot = 0;
+       if (newspd == 134) {
+               quot = 2 * info->baud_base / 269;
+               tty_encode_baud_rate(info->tty, 134, 134);
+       } else if (newspd) {
+               quot = info->baud_base / newspd;
+               if (quot == 0)
+                       quot = 1;
+               baud = info->baud_base/quot;
+               tty_encode_baud_rate(info->tty, baud, baud);
        } else {
-               if (newspd == 134) {
-                       quot = (2 * info->baud_base / 269);
-                       tty_encode_baud_rate(info->tty, 134, 134);
-               } else if (newspd) {
-                       quot = info->baud_base / newspd;
-                       if (quot == 0)
-                               quot = 1;
-                       baud = info->baud_base/quot;
-                       tty_encode_baud_rate(info->tty, baud, baud);
-               } else {
-                       quot = 0;
-               }
+               quot = 0;
        }
 
        info->timeout = ((info->xmit_fifo_size * HZ * 10 * quot) / info->baud_base);
@@ -507,17 +482,19 @@ static int mxser_set_baud(struct mxser_port *info, long newspd)
        outb(quot >> 8, info->ioaddr + UART_DLM);       /* MS of divisor */
        outb(cval, info->ioaddr + UART_LCR);    /* reset DLAB */
 
-       if (i == BAUD_TABLE_NO) {
-               quot = info->baud_base % info->speed;
+#ifdef BOTHER
+       if (C_BAUD(info->tty) == BOTHER) {
+               quot = info->baud_base % newspd;
                quot *= 8;
-               if ((quot % info->speed) > (info->speed / 2)) {
-                       quot /= info->speed;
+               if (quot % newspd > newspd / 2) {
+                       quot /= newspd;
                        quot++;
-               } else {
-                       quot /= info->speed;
-               }
+               } else
+                       quot /= newspd;
+
                SET_MOXA_MUST_ENUM_VALUE(info->ioaddr, quot);
        } else
+#endif
                SET_MOXA_MUST_ENUM_VALUE(info->ioaddr, 0);
 
        return 0;
@@ -533,7 +510,6 @@ static int mxser_change_speed(struct mxser_port *info,
        unsigned cflag, cval, fcr;
        int ret = 0;
        unsigned char status;
-       long baud;
 
        if (!info->tty || !info->tty->termios)
                return ret;
@@ -541,13 +517,8 @@ static int mxser_change_speed(struct mxser_port *info,
        if (!(info->ioaddr))
                return ret;
 
-       if (mxser_set_baud_method[info->tty->index] == 0) {
-               if ((cflag & CBAUD) == B_SPEC)
-                       baud = info->speed;
-               else
-                       baud = tty_get_baud_rate(info->tty);
-               mxser_set_baud(info, baud);
-       }
+       if (mxser_set_baud_method[info->tty->index] == 0)
+               mxser_set_baud(info, tty_get_baud_rate(info->tty));
 
        /* byte size and parity */
        switch (cflag & CSIZE) {
@@ -1587,7 +1558,8 @@ static int mxser_ioctl_special(unsigned int cmd, void __user *argp)
                                        port->mon_data.up_txcnt;
                                mon_data_ext.modem_status[i] =
                                        port->mon_data.modem_status;
-                               mon_data_ext.baudrate[i] = port->realbaud;
+                               mon_data_ext.baudrate[i] =
+                                       tty_get_baud_rate(port->tty);
 
                                if (!port->tty || !port->tty->termios) {
                                        cflag = port->normal_termios.c_cflag;
@@ -1645,7 +1617,6 @@ static int mxser_ioctl(struct tty_struct *tty, struct file *file,
        struct serial_icounter_struct __user *p_cuser;
        unsigned long templ;
        unsigned long flags;
-       unsigned int i;
        void __user *argp = (void __user *)arg;
        int retval;
 
@@ -1684,36 +1655,6 @@ static int mxser_ioctl(struct tty_struct *tty, struct file *file,
                return 0;
        }
 
-       if (cmd == MOXA_SET_SPECIAL_BAUD_RATE) {
-               int speed;
-
-               if (get_user(speed, (int __user *)argp))
-                       return -EFAULT;
-               if (speed <= 0 || speed > info->max_baud)
-                       return -EFAULT;
-               if (!info->tty || !info->tty->termios || !info->ioaddr)
-                       return 0;
-               info->tty->termios->c_cflag &= ~(CBAUD | CBAUDEX);
-               for (i = 0; i < BAUD_TABLE_NO; i++)
-                       if (speed == mxvar_baud_table[i])
-                               break;
-               if (i == BAUD_TABLE_NO) {
-                       info->tty->termios->c_cflag |= B_SPEC;
-               } else if (speed != 0)
-                       info->tty->termios->c_cflag |= mxvar_baud_table1[i];
-
-               info->speed = speed;
-               spin_lock_irqsave(&info->slock, flags);
-               mxser_change_speed(info, NULL);
-               spin_unlock_irqrestore(&info->slock, flags);
-
-               return 0;
-       } else if (cmd == MOXA_GET_SPECIAL_BAUD_RATE) {
-               if (copy_to_user(argp, &info->speed, sizeof(int)))
-                    return -EFAULT;
-               return 0;
-       }
-
        if (cmd != TIOCGSERIAL && cmd != TIOCMIWAIT && cmd != TIOCGICOUNT &&
                        test_bit(TTY_IO_ERROR, &tty->flags))
                return -EIO;
@@ -1807,20 +1748,6 @@ static int mxser_ioctl(struct tty_struct *tty, struct file *file,
                info->mon_data.rxcnt = 0;
                info->mon_data.txcnt = 0;
                return 0;
-       case MOXA_ASPP_SETBAUD:{
-               long baud;
-               if (get_user(baud, (long __user *)argp))
-                       return -EFAULT;
-               spin_lock_irqsave(&info->slock, flags);
-               mxser_set_baud(info, baud);
-               spin_unlock_irqrestore(&info->slock, flags);
-               return 0;
-       }
-       case MOXA_ASPP_GETBAUD:
-               if (copy_to_user(argp, &info->realbaud, sizeof(long)))
-                       return -EFAULT;
-
-               return 0;
 
        case MOXA_ASPP_OQUEUE:{
                int len, lsr;
@@ -2434,7 +2361,6 @@ static int __devinit mxser_initbrd(struct mxser_board *brd,
                info->normal_termios = mxvar_sdriver->init_termios;
                init_waitqueue_head(&info->open_wait);
                init_waitqueue_head(&info->delta_msr_wait);
-               info->speed = 9600;
                memset(&info->mon_data, 0, sizeof(struct mxser_mon));
                info->err_shadow = 0;
                spin_lock_init(&info->slock);

diff --git a/drivers/char/mxser_new.h b/drivers/char/mxser_new.h
index d42f7766c65292cf83f4eb44eb1bbf6ae1ab5ed3..7f7b4a711cfc09459b81e53e5e77634a58814d5f 100644 (file)
--- a/drivers/char/mxser_new.h
+++ b/drivers/char/mxser_new.h
@@ -29,14 +29,10 @@
 
 #define MOXA_SDS_RSTICOUNTER   (MOXA + 69)
 #define MOXA_ASPP_OQUEUE       (MOXA + 70)
-#define MOXA_ASPP_SETBAUD      (MOXA + 71)
-#define MOXA_ASPP_GETBAUD      (MOXA + 72)
 #define MOXA_ASPP_MON          (MOXA + 73)
 #define MOXA_ASPP_LSTATUS      (MOXA + 74)
 #define MOXA_ASPP_MON_EXT      (MOXA + 75)
 #define MOXA_SET_BAUD_METHOD   (MOXA + 76)
-#define MOXA_SET_SPECIAL_BAUD_RATE     (MOXA + 77)
-#define MOXA_GET_SPECIAL_BAUD_RATE     (MOXA + 78)
 
 /* --------------------------------------------------- */