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Subject[PATCH] taskqueue to workqueue update for specialix driver
Date
This patch updates the Specialix driver with the workqueue interface. It applies to the 2.5.63 kernel. Please apply.

diff -Naur -X /home/Amit/lib/dontdiff a/drivers/char/specialix.c b/drivers/char/specialix.c
--- a/drivers/char/specialix.c Wed Feb 19 14:38:04 2003
+++ b/drivers/char/specialix.c Sat Mar 1 17:06:59 2003
@@ -63,10 +63,12 @@
* Revision 1.10: Oct 22 1999 / Jan 21 2000.
* Added stuff for setserial.
* Nicolas Mailhot (Nicolas.Mailhot@email.enst.fr)
- *
+ * Revision 1.11: Mar 1 2003.
+ * update all the task queues to work queues.
+ * Amit Shah <amitshah@gmx.net>
*/

-#define VERSION "1.10"
+#define VERSION "1.11"


/*
@@ -171,8 +173,6 @@
#define MIN(a,b) ((a) < (b) ? (a) : (b))
#endif

-DECLARE_TASK_QUEUE(tq_specialix);
-
#undef RS_EVENT_WRITE_WAKEUP
#define RS_EVENT_WRITE_WAKEUP 0

@@ -608,10 +608,11 @@
* For now I must introduce another one - SPECIALIX_BH.
* Still hope this will be changed in near future.
* -- Dmitry.
+ *
+ * FIXME: update this comment for the workqueue interface.
*/
set_bit(event, &port->event);
- queue_task(&port->tqueue, &tq_specialix);
- mark_bh(SPECIALIX_BH);
+ schedule_work(&port->work);
}


@@ -696,7 +697,7 @@

*tty->flip.char_buf_ptr++ = ch;
tty->flip.count++;
- queue_task(&tty->flip.tqueue, &tq_timer);
+ schedule_delayed_work(&tty->flip.work, 1);
}


@@ -727,7 +728,7 @@
*tty->flip.flag_buf_ptr++ = 0;
tty->flip.count++;
}
- queue_task(&tty->flip.tqueue, &tq_timer);
+ schedule_delayed_work(&tty->flip.work, 1);
}


@@ -834,7 +835,7 @@
printk ( "Sending HUP.\n");
#endif
MOD_INC_USE_COUNT;
- if (schedule_task(&port->tqueue_hangup) == 0)
+ if (schedule_work(&port->work_hangup) == 0)
MOD_DEC_USE_COUNT;
} else {
#ifdef SPECIALIX_DEBUG
@@ -2133,11 +2134,11 @@


/*
- * 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:
+ * This routine is called from the scheduler workqueue when the
+ * interrupt routine has signalled that a hangup has occurred. The
+ * path of hangup processing is:
*
- * serial interrupt routine -> (scheduler tqueue) ->
+ * serial interrupt routine -> (scheduler workqueue) ->
* do_sx_hangup() -> tty->hangup() -> sx_hangup()
*
*/
@@ -2196,12 +2197,6 @@
}


-static void do_specialix_bh(void)
-{
- run_task_queue(&tq_specialix);
-}
-
-
static void do_softint(void *private_)
{
struct specialix_port *port = (struct specialix_port *) private_;
@@ -2229,7 +2224,6 @@
printk(KERN_ERR "sx: Couldn't get free page.\n");
return 1;
}
- init_bh(SPECIALIX_BH, do_specialix_bh);
memset(&specialix_driver, 0, sizeof(specialix_driver));
specialix_driver.magic = TTY_DRIVER_MAGIC;
specialix_driver.name = "ttyW";
@@ -2286,10 +2280,10 @@
sx_port[i].callout_termios = specialix_callout_driver.init_termios;
sx_port[i].normal_termios = specialix_driver.init_termios;
sx_port[i].magic = SPECIALIX_MAGIC;
- sx_port[i].tqueue.routine = do_softint;
- sx_port[i].tqueue.data = &sx_port[i];
- sx_port[i].tqueue_hangup.routine = do_sx_hangup;
- sx_port[i].tqueue_hangup.data = &sx_port[i];
+
+ INIT_WORK(&sx_port[i].work, do_softint, &sx_port[i]);
+ INIT_WORK(&sx_port[i].work_hangup, do_sx_hangup, &sx_port[i]);
+
sx_port[i].close_delay = 50 * HZ/100;
sx_port[i].closing_wait = 3000 * HZ/100;
init_waitqueue_head(&sx_port[i].open_wait);
diff -Naur -X /home/Amit/lib/dontdiff a/drivers/char/specialix_io8.h b/drivers/char/specialix_io8.h
--- a/drivers/char/specialix_io8.h Thu Oct 31 17:19:35 2002
+++ b/drivers/char/specialix_io8.h Sat Mar 1 17:06:50 2003
@@ -124,8 +124,8 @@
struct termios callout_termios;
wait_queue_head_t open_wait;
wait_queue_head_t close_wait;
- struct tq_struct tqueue;
- struct tq_struct tqueue_hangup;
+ struct work_struct work;
+ struct work_struct work_hangup;
short wakeup_chars;
short break_length;
unsigned short closing_wait;

--
Amit Shah
http://amitshah.nav.to/

The most exciting phrase to hear in science, the one that heralds new
discoveries, is not "Eureka!" (I found it!) but "That's funny ..."
-- Isaac Asimov



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