TTY: serial, remove dead code from 68328

The code is dead at least since 2002. So remove it to not distort git
grep output (about port.tty usage).

Remove the whole do_softirq tasklet as it's noop now.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/tty/serial/68328serial.c b/drivers/tty/serial/68328serial.c
index e0a7754..f549231 100644 (file)
--- a/drivers/tty/serial/68328serial.c
+++ b/drivers/tty/serial/68328serial.c
@@ -235,22 +235,6 @@ static void batten_down_hatches(void)
 
 static void status_handle(struct m68k_serial *info, unsigned short status)
 {
-#if 0
-       if(status & DCD) {
-               if((info->port.tty->termios->c_cflag & CRTSCTS) &&
-                  ((info->curregs[3] & AUTO_ENAB)==0)) {
-                       info->curregs[3] |= AUTO_ENAB;
-                       info->pendregs[3] |= AUTO_ENAB;
-                       write_zsreg(info->m68k_channel, 3, info->curregs[3]);
-               }
-       } else {
-               if((info->curregs[3] & AUTO_ENAB)) {
-                       info->curregs[3] &= ~AUTO_ENAB;
-                       info->pendregs[3] &= ~AUTO_ENAB;
-                       write_zsreg(info->m68k_channel, 3, info->curregs[3]);
-               }
-       }
-#endif
        /* If this is console input and this is a
         * 'break asserted' status change interrupt
         * see if we can drop into the debugger
@@ -340,9 +324,6 @@ static void transmit_chars(struct m68k_serial *info)
        info->xmit_tail = info->xmit_tail & (SERIAL_XMIT_SIZE-1);
        info->xmit_cnt--;
 
-       if (info->xmit_cnt < WAKEUP_CHARS)
-               schedule_work(&info->tqueue);
-
        if(info->xmit_cnt <= 0) {
                /* All done for now... TX ints off */
                uart->ustcnt &= ~USTCNT_TX_INTR_MASK;
@@ -378,21 +359,6 @@ irqreturn_t rs_interrupt(int irq, void *dev_id)
        return IRQ_HANDLED;
 }
 
-static void do_softint(struct work_struct *work)
-{
-       struct m68k_serial      *info = container_of(work, struct m68k_serial, tqueue);
-       struct tty_struct       *tty;
-       
-       tty = info->tty;
-       if (!tty)
-               return;
-#if 0
-       if (clear_bit(RS_EVENT_WRITE_WAKEUP, &info->event)) {
-               tty_wakeup(tty);
-       }
-#endif   
-}
-
 static int startup(struct m68k_serial * info)
 {
        m68328_uart *uart = &uart_addr[info->line];
@@ -1324,7 +1290,6 @@ rs68328_init(void)
            info->event = 0;
            info->count = 0;
            info->blocked_open = 0;
-           INIT_WORK(&info->tqueue, do_softint);
            init_waitqueue_head(&info->open_wait);
            init_waitqueue_head(&info->close_wait);
            info->line = i;

diff --git a/drivers/tty/serial/68328serial.h b/drivers/tty/serial/68328serial.h
index 8c9c3c0..3d2faab 100644 (file)
--- a/drivers/tty/serial/68328serial.h
+++ b/drivers/tty/serial/68328serial.h
@@ -158,7 +158,6 @@ struct m68k_serial {
        int                     xmit_head;
        int                     xmit_tail;
        int                     xmit_cnt;
-       struct work_struct      tqueue;
        wait_queue_head_t       open_wait;
        wait_queue_head_t       close_wait;
 };