serial: move delta_msr_wait into the tty_port

This is used by various drivers not just serial and can be extracted
as commonality

Signed-off-by: Alan Cox <alan@linux.intel.com>

1 files changed, 3 insertions, 5 deletions

diff --git a/drivers/char/mxser.c b/drivers/char/mxser.c
index 30544ca5e956..37058ff7da7d 100644
--- a/drivers/char/mxser.c
+++ b/drivers/char/mxser.c
@@ -258,7 +258,6 @@ struct mxser_port {
         struct mxser_mon mon_data;
 
         spinlock_t slock;
-        wait_queue_head_t delta_msr_wait;
 };
 
 struct mxser_board {
@@ -818,7 +817,7 @@ static void mxser_check_modem_status(struct tty_struct *tty,
         if (status & UART_MSR_DCTS)
                 port->icount.cts++;
         port->mon_data.modem_status = status;
-        wake_up_interruptible(&port->delta_msr_wait);
+        wake_up_interruptible(&port->port.delta_msr_wait);
 
         if ((port->port.flags & ASYNC_CHECK_CD) && (status & UART_MSR_DDCD)) {
                 if (status & UART_MSR_DCD)
@@ -973,7 +972,7 @@ static void mxser_shutdown(struct tty_struct *tty)
          * clear delta_msr_wait queue to avoid mem leaks: we may free the irq
          * here so the queue might never be waken up
          */
-        wake_up_interruptible(&info->delta_msr_wait);
+        wake_up_interruptible(&info->port.delta_msr_wait);
 
         /*
          * Free the IRQ, if necessary
@@ -1762,7 +1761,7 @@ static int mxser_ioctl(struct tty_struct *tty, struct file *file,
                 cnow = info->icount;    /* note the counters on entry */
                 spin_unlock_irqrestore(&info->slock, flags);
 
-                return wait_event_interruptible(info->delta_msr_wait,
+                return wait_event_interruptible(info->port.delta_msr_wait,
                                 mxser_cflags_changed(info, arg, &cnow));
         /*
          * Get counter of input serial line interrupts (DCD,RI,DSR,CTS)
@@ -2414,7 +2413,6 @@ static int __devinit mxser_initbrd(struct mxser_board *brd,
                 info->port.close_delay = 5 * HZ / 10;
                 info->port.closing_wait = 30 * HZ;
                 info->normal_termios = mxvar_sdriver->init_termios;
-                init_waitqueue_head(&info->delta_msr_wait);
                 memset(&info->mon_data, 0, sizeof(struct mxser_mon));
                 info->err_shadow = 0;
                 spin_lock_init(&info->slock);