diff options
Diffstat (limited to 'drivers/char/generic_serial.c')
-rw-r--r-- | drivers/char/generic_serial.c | 43 |
1 files changed, 22 insertions, 21 deletions
diff --git a/drivers/char/generic_serial.c b/drivers/char/generic_serial.c index c6090f84a2e..2356994ee01 100644 --- a/drivers/char/generic_serial.c +++ b/drivers/char/generic_serial.c @@ -397,7 +397,8 @@ void gs_hangup(struct tty_struct *tty) int gs_block_til_ready(void *port_, struct file * filp) { - struct gs_port *port = port_; + struct gs_port *gp = port_; + struct tty_port *port = &gp->port; DECLARE_WAITQUEUE(wait, current); int retval; int do_clocal = 0; @@ -409,16 +410,16 @@ int gs_block_til_ready(void *port_, struct file * filp) if (!port) return 0; - tty = port->port.tty; + tty = port->tty; gs_dprintk (GS_DEBUG_BTR, "Entering gs_block_till_ready.\n"); /* * If the device is in the middle of being closed, then block * until it's done, and then try again. */ - if (tty_hung_up_p(filp) || port->port.flags & ASYNC_CLOSING) { - interruptible_sleep_on(&port->port.close_wait); - if (port->port.flags & ASYNC_HUP_NOTIFY) + if (tty_hung_up_p(filp) || port->flags & ASYNC_CLOSING) { + interruptible_sleep_on(&port->close_wait); + if (port->flags & ASYNC_HUP_NOTIFY) return -EAGAIN; else return -ERESTARTSYS; @@ -432,7 +433,7 @@ int gs_block_til_ready(void *port_, struct file * filp) */ if ((filp->f_flags & O_NONBLOCK) || (tty->flags & (1 << TTY_IO_ERROR))) { - port->port.flags |= ASYNC_NORMAL_ACTIVE; + port->flags |= ASYNC_NORMAL_ACTIVE; return 0; } @@ -444,34 +445,34 @@ int gs_block_til_ready(void *port_, struct file * filp) /* * Block waiting for the carrier detect and the line to become * free (i.e., not in use by the callout). While we are in - * this loop, port->port.count is dropped by one, so that + * this loop, port->count is dropped by one, so that * rs_close() knows when to free things. We restore it upon * exit, either normal or abnormal. */ retval = 0; - add_wait_queue(&port->port.open_wait, &wait); + add_wait_queue(&port->open_wait, &wait); gs_dprintk (GS_DEBUG_BTR, "after add waitq.\n"); - spin_lock_irqsave(&port->driver_lock, flags); + spin_lock_irqsave(&gp->driver_lock, flags); if (!tty_hung_up_p(filp)) { - port->port.count--; + port->count--; } - spin_unlock_irqrestore(&port->driver_lock, flags); - port->port.blocked_open++; + spin_unlock_irqrestore(&gp->driver_lock, flags); + port->blocked_open++; while (1) { - CD = port->rd->get_CD (port); + CD = tty_port_carrier_raised(port); gs_dprintk (GS_DEBUG_BTR, "CD is now %d.\n", CD); set_current_state (TASK_INTERRUPTIBLE); if (tty_hung_up_p(filp) || - !(port->port.flags & ASYNC_INITIALIZED)) { - if (port->port.flags & ASYNC_HUP_NOTIFY) + !(port->flags & ASYNC_INITIALIZED)) { + if (port->flags & ASYNC_HUP_NOTIFY) retval = -EAGAIN; else retval = -ERESTARTSYS; break; } - if (!(port->port.flags & ASYNC_CLOSING) && + if (!(port->flags & ASYNC_CLOSING) && (do_clocal || CD)) break; gs_dprintk (GS_DEBUG_BTR, "signal_pending is now: %d (%lx)\n", @@ -483,17 +484,17 @@ int gs_block_til_ready(void *port_, struct file * filp) schedule(); } gs_dprintk (GS_DEBUG_BTR, "Got out of the loop. (%d)\n", - port->port.blocked_open); + port->blocked_open); set_current_state (TASK_RUNNING); - remove_wait_queue(&port->port.open_wait, &wait); + remove_wait_queue(&port->open_wait, &wait); if (!tty_hung_up_p(filp)) { - port->port.count++; + port->count++; } - port->port.blocked_open--; + port->blocked_open--; if (retval) return retval; - port->port.flags |= ASYNC_NORMAL_ACTIVE; + port->flags |= ASYNC_NORMAL_ACTIVE; func_exit (); return 0; } |