ACPI: don't duplicate input events on netlink
The previous events patch added a netlink event for every
user of the legacy /proc/acpi/event interface.
However, some users of /proc/acpi/event are really input events,
and they already report their events via the input layer.
Introduce a new interface, acpi_bus_generate_netlink_event(),
which is explicitly called by devices that want to repoprt
events via netlink. This allows the input-like events
to opt-out of generating netlink events. In summary:
events that are sent via netlink:
ac/battery/sbs
thermal
processor
thinkpad_acpi dock/bay
events that are sent via input layer:
button
video hotkey
thinkpad_acpi hotkey
asus_acpi/asus-laptop hotkey
sonypi/sonylaptop
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/drivers/acpi/ac.c b/drivers/acpi/ac.c
index d8b3509..b53c2cf 100644
--- a/drivers/acpi/ac.c
+++ b/drivers/acpi/ac.c
@@ -205,6 +205,9 @@
case ACPI_NOTIFY_DEVICE_CHECK:
acpi_ac_get_state(ac);
acpi_bus_generate_event(device, event, (u32) ac->state);
+ acpi_bus_generate_netlink_event(device->pnp.device_class,
+ device->dev.bus_id, event,
+ (u32) ac->state);
break;
default:
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c
index d7b499f..9f0bf90 100644
--- a/drivers/acpi/battery.c
+++ b/drivers/acpi/battery.c
@@ -869,6 +869,9 @@
acpi_battery_notify_update(battery);
acpi_bus_generate_event(device, event,
acpi_battery_present(battery));
+ acpi_bus_generate_netlink_event(device->pnp.device_class,
+ device->dev.bus_id, event,
+ acpi_battery_present(battery));
break;
default:
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index 6b2658c..e5084ec 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -292,10 +292,6 @@
if (!device)
return -EINVAL;
- if (acpi_bus_generate_genetlink_event(device, type, data))
- printk(KERN_WARNING PREFIX
- "Failed to generate an ACPI event via genetlink!\n");
-
/* drop event on the floor if no one's listening */
if (!event_is_open)
return 0;
diff --git a/drivers/acpi/event.c b/drivers/acpi/event.c
index 95637a4..b7b1432 100644
--- a/drivers/acpi/event.c
+++ b/drivers/acpi/event.c
@@ -147,7 +147,8 @@
.name = ACPI_GENL_MCAST_GROUP_NAME,
};
-int acpi_bus_generate_genetlink_event(struct acpi_device *device,
+int acpi_bus_generate_netlink_event(const char *device_class,
+ const char *bus_id,
u8 type, int data)
{
struct sk_buff *skb;
@@ -191,8 +192,8 @@
memset(event, 0, sizeof(struct acpi_genl_event));
- strcpy(event->device_class, device->pnp.device_class);
- strcpy(event->bus_id, device->dev.bus_id);
+ strcpy(event->device_class, device_class);
+ strcpy(event->bus_id, bus_id);
event->type = type;
event->data = data;
@@ -211,6 +212,8 @@
return 0;
}
+EXPORT_SYMBOL(acpi_bus_generate_netlink_event);
+
static int acpi_event_genetlink_init(void)
{
int result;
@@ -228,12 +231,14 @@
}
#else
-int acpi_bus_generate_genetlink_event(struct acpi_device *device, u8 type,
+int acpi_bus_generate_netlink_event(struct acpi_device *device, u8 type,
int data)
{
return 0;
}
+EXPORT_SYMBOL(acpi_generate_netlink_event);
+
static int acpi_event_genetlink_init(void)
{
return -ENODEV;
diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c
index 4984223..dbc2e5d 100644
--- a/drivers/acpi/processor_core.c
+++ b/drivers/acpi/processor_core.c
@@ -700,14 +700,21 @@
acpi_processor_ppc_has_changed(pr);
acpi_bus_generate_event(device, event,
pr->performance_platform_limit);
+ acpi_bus_generate_netlink_event(device->pnp.device_class,
+ device->dev.bus_id, event,
+ pr->performance_platform_limit);
break;
case ACPI_PROCESSOR_NOTIFY_POWER:
acpi_processor_cst_has_changed(pr);
acpi_bus_generate_event(device, event, 0);
+ acpi_bus_generate_netlink_event(device->pnp.device_class,
+ device->dev.bus_id, event, 0);
break;
case ACPI_PROCESSOR_NOTIFY_THROTTLING:
acpi_processor_tstate_has_changed(pr);
acpi_bus_generate_event(device, event, 0);
+ acpi_bus_generate_netlink_event(device->pnp.device_class,
+ device->dev.bus_id, event, 0);
default:
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Unsupported event [0x%x]\n", event));
diff --git a/drivers/acpi/sbs.c b/drivers/acpi/sbs.c
index 82c3a55..2d67e92 100644
--- a/drivers/acpi/sbs.c
+++ b/drivers/acpi/sbs.c
@@ -445,6 +445,7 @@
strcpy(acpi_device_bid(device), bid_saved);
strcpy(acpi_device_class(device), class_saved);
+ acpi_bus_generate_netlink_event(class, bid, event, state);
return result;
}
diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
index 1e06159..291758c 100644
--- a/drivers/acpi/thermal.c
+++ b/drivers/acpi/thermal.c
@@ -487,6 +487,10 @@
KELVIN_TO_CELSIUS(tz->temperature));
acpi_bus_generate_event(tz->device, ACPI_THERMAL_NOTIFY_CRITICAL,
tz->trips.critical.flags.enabled);
+ acpi_bus_generate_netlink_event(tz->device->pnp.device_class,
+ tz->device->dev.bus_id,
+ ACPI_THERMAL_NOTIFY_CRITICAL,
+ tz->trips.critical.flags.enabled);
orderly_poweroff(true);
@@ -506,6 +510,10 @@
acpi_bus_generate_event(tz->device, ACPI_THERMAL_NOTIFY_HOT,
tz->trips.hot.flags.enabled);
+ acpi_bus_generate_netlink_event(tz->device->pnp.device_class,
+ tz->device->dev.bus_id,
+ ACPI_THERMAL_NOTIFY_HOT,
+ tz->trips.hot.flags.enabled);
/* TBD: Call user-mode "sleep(S4)" function */
@@ -1150,11 +1158,15 @@
acpi_thermal_get_trip_points(tz);
acpi_thermal_check(tz);
acpi_bus_generate_event(device, event, 0);
+ acpi_bus_generate_netlink_event(device->pnp.device_class,
+ device->dev.bus_id, event, 0);
break;
case ACPI_THERMAL_NOTIFY_DEVICES:
if (tz->flags.devices)
acpi_thermal_get_devices(tz);
acpi_bus_generate_event(device, event, 0);
+ acpi_bus_generate_netlink_event(device->pnp.device_class,
+ device->dev.bus_id, event, 0);
break;
default:
ACPI_DEBUG_PRINT((ACPI_DB_INFO,