This is a note to let you know that I've just added the patch titled platform/x86: ideapad-laptop: handle ACPI event 1 to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: platform-x86-ideapad-laptop-handle-acpi-event-1.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From foo@baz Mon Jul 3 13:09:11 CEST 2017 From: Zach Ploskey <zach@xxxxxxxxxxx> Date: Sun, 22 Jan 2017 00:47:19 -0800 Subject: platform/x86: ideapad-laptop: handle ACPI event 1 From: Zach Ploskey <zach@xxxxxxxxxxx> [ Upstream commit cfee5d63767b2e7997c1f36420d008abbe61565c ] On Ideapad laptops, ACPI event 1 is currently not handled. Many models log "ideapad_laptop: Unknown event: 1" every 20 seconds or so while running on battery power. Some convertible laptops receive this event when switching in and out of tablet mode. This adds and additional case for event 1 in ideapad_acpi_notify to call ideapad_input_report(priv, vpc_bit), so that the event is reported to userspace and we avoid unnecessary logging. Fixes bug #107481 (https://bugzilla.kernel.org/show_bug.cgi?id=107481) Fixes bug #65751 (https://bugzilla.kernel.org/show_bug.cgi?id=65751) Signed-off-by: Zach Ploskey <zach@xxxxxxxxxxx> Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx> Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/platform/x86/ideapad-laptop.c | 1 + 1 file changed, 1 insertion(+) --- a/drivers/platform/x86/ideapad-laptop.c +++ b/drivers/platform/x86/ideapad-laptop.c @@ -807,6 +807,7 @@ static void ideapad_acpi_notify(acpi_han case 11: case 7: case 6: + case 1: ideapad_input_report(priv, vpc_bit); break; case 5: Patches currently in stable-queue which might be from zach@xxxxxxxxxxx are queue-4.4/platform-x86-ideapad-laptop-handle-acpi-event-1.patch