[PATCH 3.12 30/50] ACPI / button: Add ACPI Button event via netlink routine

From: Jiri Slaby
Date: Mon May 05 2014 - 08:56:43 EST


From: Lan Tianyu <tianyu.lan@xxxxxxxxx>

3.12-stable review patch. If anyone has any objections, please let me know.

===============

commit 0bf6368ee8f25826d0645c0f7a4f17c8845356a4 upstream.

Commit 1696d9d (ACPI: Remove the old /proc/acpi/event interface)
removed ACPI Button event which originally was sent to userspace via
/proc/acpi/event. This caused ACPI shutdown regression on gentoo
in VirtualBox. Now ACPI events are sent to userspace via netlink,
so add ACPI Button event back via netlink routine.

References: https://bugzilla.kernel.org/show_bug.cgi?id=71721
Reported-and-tested-by: Richard Musil <richard.musil@xxxxxxxxx>
Signed-off-by: Lan Tianyu <tianyu.lan@xxxxxxxxx>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Signed-off-by: Jiri Slaby <jslaby@xxxxxxx>
---
drivers/acpi/button.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/drivers/acpi/button.c b/drivers/acpi/button.c
index a55773801c5f..3aa89eb8dbbd 100644
--- a/drivers/acpi/button.c
+++ b/drivers/acpi/button.c
@@ -302,6 +302,10 @@ static void acpi_button_notify(struct acpi_device *device, u32 event)
input_sync(input);

pm_wakeup_event(&device->dev, 0);
+ acpi_bus_generate_netlink_event(
+ device->pnp.device_class,
+ dev_name(&device->dev),
+ event, ++button->pushed);
}
break;
default:
--
1.9.2

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