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path: root/drivers/s390/char/con3215.c
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Diffstat (limited to 'drivers/s390/char/con3215.c')
-rw-r--r--drivers/s390/char/con3215.c85
1 files changed, 9 insertions, 76 deletions
diff --git a/drivers/s390/char/con3215.c b/drivers/s390/char/con3215.c
index d8acabbb1ed3..1354c42d95aa 100644
--- a/drivers/s390/char/con3215.c
+++ b/drivers/s390/char/con3215.c
@@ -289,16 +289,14 @@ static void raw3215_timeout(struct timer_list *t)
spin_lock_irqsave(get_ccwdev_lock(raw->cdev), flags);
raw->flags &= ~RAW3215_TIMER_RUNS;
- if (!tty_port_suspended(&raw->port)) {
- raw3215_mk_write_req(raw);
- raw3215_start_io(raw);
- if ((raw->queued_read || raw->queued_write) &&
- !(raw->flags & RAW3215_WORKING) &&
- !(raw->flags & RAW3215_TIMER_RUNS)) {
- raw->timer.expires = RAW3215_TIMEOUT + jiffies;
- add_timer(&raw->timer);
- raw->flags |= RAW3215_TIMER_RUNS;
- }
+ raw3215_mk_write_req(raw);
+ raw3215_start_io(raw);
+ if ((raw->queued_read || raw->queued_write) &&
+ !(raw->flags & RAW3215_WORKING) &&
+ !(raw->flags & RAW3215_TIMER_RUNS)) {
+ raw->timer.expires = RAW3215_TIMEOUT + jiffies;
+ add_timer(&raw->timer);
+ raw->flags |= RAW3215_TIMER_RUNS;
}
spin_unlock_irqrestore(get_ccwdev_lock(raw->cdev), flags);
}
@@ -311,7 +309,7 @@ static void raw3215_timeout(struct timer_list *t)
*/
static inline void raw3215_try_io(struct raw3215_info *raw)
{
- if (!tty_port_initialized(&raw->port) || tty_port_suspended(&raw->port))
+ if (!tty_port_initialized(&raw->port))
return;
if (raw->queued_read != NULL)
raw3215_start_io(raw);
@@ -464,26 +462,6 @@ put_tty:
}
/*
- * Drop the oldest line from the output buffer.
- */
-static void raw3215_drop_line(struct raw3215_info *raw)
-{
- int ix;
- char ch;
-
- BUG_ON(raw->written != 0);
- ix = (raw->head - raw->count) & (RAW3215_BUFFER_SIZE - 1);
- while (raw->count > 0) {
- ch = raw->buffer[ix];
- ix = (ix + 1) & (RAW3215_BUFFER_SIZE - 1);
- raw->count--;
- if (ch == 0x15)
- break;
- }
- raw->head = ix;
-}
-
-/*
* Wait until length bytes are available int the output buffer.
* Has to be called with the s390irq lock held. Can be called
* disabled.
@@ -491,13 +469,6 @@ static void raw3215_drop_line(struct raw3215_info *raw)
static void raw3215_make_room(struct raw3215_info *raw, unsigned int length)
{
while (RAW3215_BUFFER_SIZE - raw->count < length) {
- /* While console is frozen for suspend we have no other
- * choice but to drop message from the buffer to make
- * room for even more messages. */
- if (tty_port_suspended(&raw->port)) {
- raw3215_drop_line(raw);
- continue;
- }
/* there might be a request pending */
raw->flags |= RAW3215_FLUSHING;
raw3215_mk_write_req(raw);
@@ -763,36 +734,6 @@ static int raw3215_set_offline (struct ccw_device *cdev)
return 0;
}
-static int raw3215_pm_stop(struct ccw_device *cdev)
-{
- struct raw3215_info *raw;
- unsigned long flags;
-
- /* Empty the output buffer, then prevent new I/O. */
- raw = dev_get_drvdata(&cdev->dev);
- spin_lock_irqsave(get_ccwdev_lock(raw->cdev), flags);
- raw3215_make_room(raw, RAW3215_BUFFER_SIZE);
- tty_port_set_suspended(&raw->port, 1);
- spin_unlock_irqrestore(get_ccwdev_lock(raw->cdev), flags);
- return 0;
-}
-
-static int raw3215_pm_start(struct ccw_device *cdev)
-{
- struct raw3215_info *raw;
- unsigned long flags;
-
- /* Allow I/O again and flush output buffer. */
- raw = dev_get_drvdata(&cdev->dev);
- spin_lock_irqsave(get_ccwdev_lock(raw->cdev), flags);
- tty_port_set_suspended(&raw->port, 0);
- raw->flags |= RAW3215_FLUSHING;
- raw3215_try_io(raw);
- raw->flags &= ~RAW3215_FLUSHING;
- spin_unlock_irqrestore(get_ccwdev_lock(raw->cdev), flags);
- return 0;
-}
-
static struct ccw_device_id raw3215_id[] = {
{ CCW_DEVICE(0x3215, 0) },
{ /* end of list */ },
@@ -808,9 +749,6 @@ static struct ccw_driver raw3215_ccw_driver = {
.remove = &raw3215_remove,
.set_online = &raw3215_set_online,
.set_offline = &raw3215_set_offline,
- .freeze = &raw3215_pm_stop,
- .thaw = &raw3215_pm_start,
- .restore = &raw3215_pm_start,
.int_class = IRQIO_C15,
};
@@ -858,11 +796,6 @@ static void con3215_flush(void)
unsigned long flags;
raw = raw3215[0]; /* console 3215 is the first one */
- if (tty_port_suspended(&raw->port))
- /* The console is still frozen for suspend. */
- if (ccw_device_force_console(raw->cdev))
- /* Forcing didn't work, no panic message .. */
- return;
spin_lock_irqsave(get_ccwdev_lock(raw->cdev), flags);
raw3215_make_room(raw, RAW3215_BUFFER_SIZE);
spin_unlock_irqrestore(get_ccwdev_lock(raw->cdev), flags);