Merge git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input

[linux-2.6-omap-h63xx.git] / drivers / char / riscom8.c

diff --git a/drivers/char/riscom8.c b/drivers/char/riscom8.c
index f1c94f771af5e803426fd2f0a707cd7154e66897..5ab32b38f45a28f55737c1b88ead868d299671ea 100644 (file)
--- a/drivers/char/riscom8.c
+++ b/drivers/char/riscom8.c
@@ -81,7 +81,6 @@
 
 static struct riscom_board * IRQ_to_board[16];
 static struct tty_driver *riscom_driver;
-static unsigned char * tmp_buf;
 
 static unsigned long baud_table[] =  {
        0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400, 4800,
@@ -551,7 +550,7 @@ static inline void rc_check_modem(struct riscom_board const * bp)
 }
 
 /* The main interrupt processing routine */
-static irqreturn_t rc_interrupt(int irq, void * dev_id, struct pt_regs * regs)
+static irqreturn_t rc_interrupt(int irq, void * dev_id)
 {
        unsigned char status;
        unsigned char ack;
@@ -560,11 +559,10 @@ static irqreturn_t rc_interrupt(int irq, void * dev_id, struct pt_regs * regs)
        int handled = 0;
 
        bp = IRQ_to_board[irq];
-       
-       if (!bp || !(bp->flags & RC_BOARD_ACTIVE))  {
+
+       if (!(bp->flags & RC_BOARD_ACTIVE))
                return IRQ_NONE;
-       }
-       
+
        while ((++loop < 16) && ((status = ~(rc_in(bp, RC_BSR))) &
                                 (RC_BSR_TOUT | RC_BSR_TINT |
                                  RC_BSR_MINT | RC_BSR_RINT))) {
@@ -675,26 +673,12 @@ static void rc_change_speed(struct riscom_board *bp, struct riscom_port *port)
        port->COR2 = 0;
        port->MSVR = MSVR_RTS;
        
-       baud = C_BAUD(tty);
-       
-       if (baud & CBAUDEX) {
-               baud &= ~CBAUDEX;
-               if (baud < 1 || baud > 2) 
-                       port->tty->termios->c_cflag &= ~CBAUDEX;
-               else
-                       baud += 15;
-       }
-       if (baud == 15)  {
-               if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
-                       baud ++;
-               if ((port->flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
-                       baud += 2;
-       }
+       baud = tty_get_baud_rate(tty);
        
        /* Select port on the board */
        rc_out(bp, CD180_CAR, port_No(port));
        
-       if (!baud_table[baud])  {
+       if (!baud)  {
                /* Drop DTR & exit */
                bp->DTR |= (1u << port_No(port));
                rc_out(bp, RC_DTR, bp->DTR);
@@ -710,7 +694,7 @@ static void rc_change_speed(struct riscom_board *bp, struct riscom_port *port)
         */
        
        /* Set baud rate for port */
-       tmp = (((RC_OSCFREQ + baud_table[baud]/2) / baud_table[baud] +
+       tmp = (((RC_OSCFREQ + baud/2) / baud +
                CD180_TPC/2) / CD180_TPC);
 
        rc_out(bp, CD180_RBPRH, (tmp >> 8) & 0xff); 
@@ -718,7 +702,7 @@ static void rc_change_speed(struct riscom_board *bp, struct riscom_port *port)
        rc_out(bp, CD180_RBPRL, tmp & 0xff); 
        rc_out(bp, CD180_TBPRL, tmp & 0xff);
        
-       baud = (baud_table[baud] + 5) / 10;   /* Estimated CPS */
+       baud = (baud + 5) / 10;   /* Estimated CPS */
        
        /* Two timer ticks seems enough to wakeup something like SLIP driver */
        tmp = ((baud + HZ/2) / HZ) * 2 - CD180_NFIFO;           
@@ -1138,7 +1122,7 @@ static int rc_write(struct tty_struct * tty,
        
        bp = port_Board(port);
 
-       if (!tty || !port->xmit_buf || !tmp_buf)
+       if (!tty || !port->xmit_buf)
                return 0;
 
        save_flags(flags);
@@ -1597,7 +1581,7 @@ static void do_softint(void *private_)
        }
 }
 
-static struct tty_operations riscom_ops = {
+static const struct tty_operations riscom_ops = {
        .open  = rc_open,
        .close = rc_close,
        .write = rc_write,
@@ -1626,11 +1610,6 @@ static inline int rc_init_drivers(void)
        if (!riscom_driver)     
                return -ENOMEM;
        
-       if (!(tmp_buf = (unsigned char *) get_zeroed_page(GFP_KERNEL))) {
-               printk(KERN_ERR "rc: Couldn't get free page.\n");
-               put_tty_driver(riscom_driver);
-               return 1;
-       }
        memset(IRQ_to_board, 0, sizeof(IRQ_to_board));
        riscom_driver->owner = THIS_MODULE;
        riscom_driver->name = "ttyL";
@@ -1643,7 +1622,6 @@ static inline int rc_init_drivers(void)
        riscom_driver->flags = TTY_DRIVER_REAL_RAW;
        tty_set_operations(riscom_driver, &riscom_ops);
        if ((error = tty_register_driver(riscom_driver)))  {
-               free_page((unsigned long)tmp_buf);
                put_tty_driver(riscom_driver);
                printk(KERN_ERR "rc: Couldn't register RISCom/8 driver, "
                                "error = %d\n",
@@ -1671,7 +1649,6 @@ static void rc_release_drivers(void)
 
        save_flags(flags);
        cli();
-       free_page((unsigned long)tmp_buf);
        tty_unregister_driver(riscom_driver);
        put_tty_driver(riscom_driver);
        restore_flags(flags);