Messages in this thread Patch in this message | | | Subject | [PATCH 3/11] input: Add locking to serio.c | Date | Sat, 21 Jun 2003 15:51:57 +0200 | From | Vojtech Pavlik <> |
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You can pull this changeset from: bk://kernel.bkbits.net/vojtech/input
===================================================================
ChangeSet@1.1361, 2003-06-21 04:34:11-07:00, vojtech@kernel.bkbits.net input: Add locking to serio.c
serio.c | 13 +++++++++++++ 1 files changed, 13 insertions(+)
===================================================================
diff -Nru a/drivers/input/serio/serio.c b/drivers/input/serio/serio.c --- a/drivers/input/serio/serio.c Sat Jun 21 15:25:06 2003 +++ b/drivers/input/serio/serio.c Sat Jun 21 15:25:06 2003 @@ -58,6 +58,7 @@ struct list_head node; }; +static DECLARE_MUTEX(serio_sem); static LIST_HEAD(serio_list); static LIST_HEAD(serio_dev_list); static LIST_HEAD(serio_event_list); @@ -90,9 +91,11 @@ switch (event->type) { case SERIO_RESCAN : + down(&serio_sem); if (event->serio->dev && event->serio->dev->disconnect) event->serio->dev->disconnect(event->serio); serio_find_dev(event->serio); + up(&serio_sem); break; default: break; @@ -153,30 +156,37 @@ void serio_register_port(struct serio *serio) { + down(&serio_sem); list_add_tail(&serio->node, &serio_list); serio_find_dev(serio); + up(&serio_sem); } void serio_unregister_port(struct serio *serio) { + down(&serio_sem); list_del_init(&serio->node); if (serio->dev && serio->dev->disconnect) serio->dev->disconnect(serio); + up(&serio_sem); } void serio_register_device(struct serio_dev *dev) { struct serio *serio; + down(&serio_sem); list_add_tail(&dev->node, &serio_dev_list); list_for_each_entry(serio, &serio_list, node) if (!serio->dev && dev->connect) dev->connect(serio, dev); + up(&serio_sem); } void serio_unregister_device(struct serio_dev *dev) { struct serio *serio; + down(&serio_sem); list_del_init(&dev->node); list_for_each_entry(serio, &serio_list, node) { @@ -184,8 +194,10 @@ dev->disconnect(serio); serio_find_dev(serio); } + up(&serio_sem); } +/* called from serio_dev->connect/disconnect methods under serio_sem */ int serio_open(struct serio *serio, struct serio_dev *dev) { if (serio->open(serio)) @@ -194,6 +206,7 @@ return 0; } +/* called from serio_dev->connect/disconnect methods under serio_sem */ void serio_close(struct serio *serio) { serio->close(serio); - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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