tty/serial: lay the foundations for the next set of reworks

[linux-2.6-block.git] / drivers / char / rocket.c

diff --git a/drivers/char/rocket.c b/drivers/char/rocket.c
index 1b3fc6fd358e79ce0997c42a9d90bf5368378ffd..00cfb6c7fd4698b019188cfefb46ec457667a0bd 100644 (file)
--- a/drivers/char/rocket.c
+++ b/drivers/char/rocket.c
@@ -449,7 +449,8 @@ static void rp_do_transmit(struct r_port *info)
        while (1) {
                if (tty->stopped || tty->hw_stopped)
                        break;
-               c = min(info->xmit_fifo_room, min(info->xmit_cnt, XMIT_BUF_SIZE - info->xmit_tail));
+               c = min(info->xmit_fifo_room, info->xmit_cnt);
+               c = min(c, XMIT_BUF_SIZE - info->xmit_tail);
                if (c <= 0 || info->xmit_fifo_room <= 0)
                        break;
                sOutStrW(sGetTxRxDataIO(cp), (unsigned short *) (info->xmit_buf + info->xmit_tail), c / 2);
@@ -1584,6 +1585,7 @@ static void rp_wait_until_sent(struct tty_struct *tty, int timeout)
               jiffies);
        printk(KERN_INFO "cps=%d...\n", info->cps);
 #endif
+       lock_kernel();
        while (1) {
                txcnt = sGetTxCnt(cp);
                if (!txcnt) {
@@ -1611,6 +1613,7 @@ static void rp_wait_until_sent(struct tty_struct *tty, int timeout)
                        break;
        }
        __set_current_state(TASK_RUNNING);
+       unlock_kernel();
 #ifdef ROCKET_DEBUG_WAIT_UNTIL_SENT
        printk(KERN_INFO "txcnt = %d (jiff=%lu)...done\n", txcnt, jiffies);
 #endif
@@ -1758,10 +1761,10 @@ static int rp_write(struct tty_struct *tty,
 
        /*  Write remaining data into the port's xmit_buf */
        while (1) {
-               if (!info->tty) /*   Seemingly obligatory check... */
+               if (!info->tty)         /* Seemingly obligatory check... */
                        goto end;
-
-               c = min(count, min(XMIT_BUF_SIZE - info->xmit_cnt - 1, XMIT_BUF_SIZE - info->xmit_head));
+               c = min(count, XMIT_BUF_SIZE - info->xmit_cnt - 1);
+               c = min(c, XMIT_BUF_SIZE - info->xmit_head);
                if (c <= 0)
                        break;