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Input: serio - offload resume to kseriod

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When resuming AUX ports psmouse driver calls psmouse_extensions()
to determine if the attached mouse is still the same, which may take
a while to complete for generic mice. Offload the resume process to
kseriod so the rest of the system may continue resuming without
waiting for the mouse.

Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Shaohua Li 2008-07-03 10:45:38 -04:00 committed by Dmitry Torokhov
parent a822bea796
commit 6aabcdffd1
1 changed files with 37 additions and 18 deletions
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55
drivers/input/serio/serio.c
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@ -63,8 +63,9 @@ static LIST_HEAD(serio_list);
static struct bus_type serio_bus;
static void serio_add_port(struct serio *serio);
static void serio_reconnect_port(struct serio *serio);
static int serio_reconnect_port(struct serio *serio);
static void serio_disconnect_port(struct serio *serio);
static void serio_reconnect_chain(struct serio *serio);
static void serio_attach_driver(struct serio_driver *drv);
static int serio_connect_driver(struct serio *serio, struct serio_driver *drv)
@ -161,6 +162,7 @@ static void serio_find_driver(struct serio *serio)
enum serio_event_type {
SERIO_RESCAN_PORT,
SERIO_RECONNECT_PORT,
SERIO_RECONNECT_CHAIN,
SERIO_REGISTER_PORT,
SERIO_ATTACH_DRIVER,
};
@ -315,6 +317,10 @@ static void serio_handle_event(void)
serio_find_driver(event->object);
break;
case SERIO_RECONNECT_CHAIN:
serio_reconnect_chain(event->object);
break;
case SERIO_ATTACH_DRIVER:
serio_attach_driver(event->object);
break;
@ -470,7 +476,7 @@ static ssize_t serio_rebind_driver(struct device *dev, struct device_attribute *
if (!strncmp(buf, "none", count)) {
serio_disconnect_port(serio);
} else if (!strncmp(buf, "reconnect", count)) {
serio_reconnect_port(serio);
serio_reconnect_chain(serio);
} else if (!strncmp(buf, "rescan", count)) {
serio_disconnect_port(serio);
serio_find_driver(serio);
@ -619,15 +625,31 @@ static void serio_destroy_port(struct serio *serio)
put_device(&serio->dev);
}
/*
* Reconnect serio port (re-initialize attached device).
* If reconnect fails (old device is no longer attached or
* there was no device to begin with) we do full rescan in
* hope of finding a driver for the port.
*/
static int serio_reconnect_port(struct serio *serio)
{
int error = serio_reconnect_driver(serio);
if (error) {
serio_disconnect_port(serio);
serio_find_driver(serio);
}
return error;
}
/*
* Reconnect serio port and all its children (re-initialize attached devices)
*/
static void serio_reconnect_port(struct serio *serio)
static void serio_reconnect_chain(struct serio *serio)
{
do {
if (serio_reconnect_driver(serio)) {
serio_disconnect_port(serio);
serio_find_driver(serio);
if (serio_reconnect_port(serio)) {
/* Ok, old children are now gone, we are done */
break;
}
@ -673,7 +695,7 @@ void serio_rescan(struct serio *serio)
void serio_reconnect(struct serio *serio)
{
serio_queue_event(serio, NULL, SERIO_RECONNECT_PORT);
serio_queue_event(serio, NULL, SERIO_RECONNECT_CHAIN);
}
/*
@ -927,19 +949,16 @@ static int serio_suspend(struct device *dev, pm_message_t state)
static int serio_resume(struct device *dev)
{
struct serio *serio = to_serio_port(dev);
if (dev->power.power_state.event != PM_EVENT_ON &&
serio_reconnect_driver(serio)) {
/*
* Driver re-probing can take a while, so better let kseriod
* deal with it.
*/
serio_rescan(serio);
/*
* Driver reconnect can take a while, so better let kseriod
* deal with it.
*/
if (dev->power.power_state.event != PM_EVENT_ON) {
dev->power.power_state = PMSG_ON;
serio_queue_event(to_serio_port(dev), NULL,
SERIO_RECONNECT_PORT);
}
dev->power.power_state = PMSG_ON;
return 0;
}
#endif /* CONFIG_PM */