/*
* Function to start a delayed output after RAW3215_TIMEOUT seconds
*/
static void raw3215_timeout(unsigned long __data)
{
raw3215_info *raw = (raw3215_info *) __data;
unsigned long flags;
s390irq_spin_lock_irqsave(raw->irq, flags);
if (raw->flags & RAW3215_TIMER_RUNS) {
del_timer(&raw->timer);
raw->flags &= ~RAW3215_TIMER_RUNS;
raw3215_mk_write_req(raw);
raw3215_start_io(raw);
}
s390irq_spin_unlock_irqrestore(raw->irq, flags);
}
/*
* Function to start a delayed output after RAW3215_TIMEOUT seconds
*/
static void
raw3215_timeout(unsigned long __data)
{
struct raw3215_info *raw = (struct raw3215_info *) __data;
unsigned long flags;
spin_lock_irqsave(get_ccwdev_lock(raw->cdev), flags);
if (raw->flags & RAW3215_TIMER_RUNS) {
del_timer(&raw->timer);
raw->flags &= ~RAW3215_TIMER_RUNS;
raw3215_mk_write_req(raw);
raw3215_start_io(raw);
}
spin_unlock_irqrestore(get_ccwdev_lock(raw->cdev), flags);
}
/*
* Function to conditionally start an IO. A read is started immediately,
* a write is only started immediately if the flush flag is on or the
* amount of data is bigger than RAW3215_MIN_WRITE. If a write is not
* done immediately a timer is started with a delay of RAW3215_TIMEOUT.
*/
static inline void raw3215_try_io(struct raw3215_info *raw)
{
if (!(raw->flags & RAW3215_ACTIVE) || (raw->flags & RAW3215_FROZEN))
return;
if (raw->queued_read != NULL)
raw3215_start_io(raw);
else if (raw->queued_write != NULL) {
if ((raw->queued_write->delayable == 0) ||
(raw->flags & RAW3215_FLUSHING)) {
/* execute write requests bigger than minimum size */
raw3215_start_io(raw);
}
}
if ((raw->queued_read || raw->queued_write) &&
!(raw->flags & RAW3215_WORKING) &&
!(raw->flags & RAW3215_TIMER_RUNS)) {
init_timer(&raw->timer);
raw->timer.expires = RAW3215_TIMEOUT + jiffies;
raw->timer.data = (unsigned long) raw;
raw->timer.function = raw3215_timeout;
add_timer(&raw->timer);
raw->flags |= RAW3215_TIMER_RUNS;
}
}
/*
* Function to conditionally start an IO. A read is started immediately,
* a write is only started immediately if the flush flag is on or the
* amount of data is bigger than RAW3215_MIN_WRITE. If a write is not
* done immediately a timer is started with a delay of RAW3215_TIMEOUT.
*/
static inline void raw3215_try_io(struct raw3215_info *raw)
{
if (!(raw->port.flags & ASYNC_INITIALIZED) ||
(raw->port.flags & ASYNC_SUSPENDED))
return;
if (raw->queued_read != NULL)
raw3215_start_io(raw);
else if (raw->queued_write != NULL) {
if ((raw->queued_write->delayable == 0) ||
(raw->flags & RAW3215_FLUSHING)) {
/* execute write requests bigger than minimum size */
raw3215_start_io(raw);
if (raw->flags & RAW3215_TIMER_RUNS) {
del_timer(&raw->timer);
raw->flags &= ~RAW3215_TIMER_RUNS;
}
} else if (!(raw->flags & RAW3215_TIMER_RUNS)) {
/* delay small writes */
raw->timer.expires = RAW3215_TIMEOUT + jiffies;
add_timer(&raw->timer);
raw->flags |= RAW3215_TIMER_RUNS;
}
}
}
/*
* Function to start a delayed output after RAW3215_TIMEOUT seconds
*/
static void raw3215_timeout(unsigned long __data)
{
struct raw3215_info *raw = (struct raw3215_info *) __data;
unsigned long flags;
spin_lock_irqsave(get_ccwdev_lock(raw->cdev), flags);
raw->flags &= ~RAW3215_TIMER_RUNS;
if (!(raw->port.flags & ASYNC_SUSPENDED)) {
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);
}
