diff options
Diffstat (limited to 'drivers/char/esp.c')
-rw-r--r-- | drivers/char/esp.c | 61 |
1 files changed, 5 insertions, 56 deletions
diff --git a/drivers/char/esp.c b/drivers/char/esp.c index 28607763ae6..c01e26d9ee5 100644 --- a/drivers/char/esp.c +++ b/drivers/char/esp.c @@ -111,9 +111,6 @@ static char serial_version[] __initdata = "2.2"; static struct tty_driver *esp_driver; -/* serial subtype definitions */ -#define SERIAL_TYPE_NORMAL 1 - /* * Serial driver configuration section. Here are the various options: * @@ -245,17 +242,6 @@ static void rs_start(struct tty_struct *tty) * ----------------------------------------------------------------------- */ -/* - * This routine is used by the interrupt handler to schedule - * processing in the software interrupt portion of the driver. - */ -static inline void rs_sched_event(struct esp_struct *info, - int event) -{ - info->event |= 1 << event; - schedule_work(&info->tqueue); -} - static DEFINE_SPINLOCK(pio_lock); static inline struct esp_pio_buffer *get_pio_buffer(void) @@ -477,7 +463,8 @@ static inline void transmit_chars_pio(struct esp_struct *info, } if (info->xmit_cnt < WAKEUP_CHARS) { - rs_sched_event(info, ESP_EVENT_WRITE_WAKEUP); + if (info->tty) + tty_wakeup(info->tty); #ifdef SERIAL_DEBUG_INTR printk("THRE..."); @@ -515,7 +502,8 @@ static inline void transmit_chars_dma(struct esp_struct *info, int num_bytes) info->xmit_tail = (info->xmit_tail + dma_bytes) & (ESP_XMIT_SIZE - 1); if (info->xmit_cnt < WAKEUP_CHARS) { - rs_sched_event(info, ESP_EVENT_WRITE_WAKEUP); + if (info->tty) + tty_wakeup(info->tty); #ifdef SERIAL_DEBUG_INTR printk("THRE..."); @@ -607,7 +595,7 @@ static inline void check_modem_status(struct esp_struct *info) #ifdef SERIAL_DEBUG_OPEN printk("scheduling hangup..."); #endif - schedule_work(&info->tqueue_hangup); + tty_hangup(info->tty); } } } @@ -723,41 +711,6 @@ static irqreturn_t rs_interrupt_single(int irq, void *dev_id) * ------------------------------------------------------------------- */ -static void do_softint(struct work_struct *work) -{ - struct esp_struct *info = - container_of(work, struct esp_struct, tqueue); - struct tty_struct *tty; - - tty = info->tty; - if (!tty) - return; - - if (test_and_clear_bit(ESP_EVENT_WRITE_WAKEUP, &info->event)) { - tty_wakeup(tty); - } -} - -/* - * This routine is called from the scheduler tqueue when the interrupt - * routine has signalled that a hangup has occurred. The path of - * hangup processing is: - * - * serial interrupt routine -> (scheduler tqueue) -> - * do_serial_hangup() -> tty->hangup() -> esp_hangup() - * - */ -static void do_serial_hangup(struct work_struct *work) -{ - struct esp_struct *info = - container_of(work, struct esp_struct, tqueue_hangup); - struct tty_struct *tty; - - tty = info->tty; - if (tty) - tty_hangup(tty); -} - /* * --------------------------------------------------------------- * Low level utility subroutines for the serial driver: routines to @@ -2041,7 +1994,6 @@ static void rs_close(struct tty_struct *tty, struct file * filp) tty->driver->flush_buffer(tty); tty_ldisc_flush(tty); tty->closing = 0; - info->event = 0; info->tty = NULL; if (info->blocked_open) { @@ -2109,7 +2061,6 @@ static void esp_hangup(struct tty_struct *tty) rs_flush_buffer(tty); shutdown(info); - info->event = 0; info->count = 0; info->flags &= ~ASYNC_NORMAL_ACTIVE; info->tty = NULL; @@ -2495,8 +2446,6 @@ static int __init espserial_init(void) info->magic = ESP_MAGIC; info->close_delay = 5*HZ/10; info->closing_wait = 30*HZ; - INIT_WORK(&info->tqueue, do_softint); - INIT_WORK(&info->tqueue_hangup, do_serial_hangup); info->config.rx_timeout = rx_timeout; info->config.flow_on = flow_on; info->config.flow_off = flow_off; |