lkml.org 
[lkml]   [2011]   [Jun]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH 1/2] ideapad-laptop: Ignore an unused VPC notification
    Date
    BIOS fires notifications in a constant period with VPC bit 1 set when the
    power cord is unplugged.

    This event is not known yet to have any effect, but it makes the
    call to sparse_keymap_report_event() and generates many KEY_UNKNOWNs.

    This causes the userspace (Gnome Power Manager in my case) unable
    to enter the idle mode. As the result there is no screensaver showing up,
    no dim backlight, etc.

    Signed-off-by: Keng-Yu Lin <kengyu@canonical.com>
    ---
    drivers/platform/x86/ideapad-laptop.c | 3 ++-
    1 files changed, 2 insertions(+), 1 deletions(-)

    diff --git a/drivers/platform/x86/ideapad-laptop.c b/drivers/platform/x86/ideapad-laptop.c
    index bfdda33..820f013 100644
    --- a/drivers/platform/x86/ideapad-laptop.c
    +++ b/drivers/platform/x86/ideapad-laptop.c
    @@ -463,7 +463,8 @@ static void ideapad_acpi_notify(struct acpi_device *adevice, u32 event)
    ideapad_sync_rfk_state(adevice);
    else if (vpc_bit == 4)
    read_ec_data(handle, 0x12, &vpc2);
    - else
    + else if (vpc_bit == 1) {
    + } else
    ideapad_input_report(priv, vpc_bit);
    }
    }
    --
    1.7.4.1


    \
     
     \ /
      Last update: 2011-06-28 15:53    [W:0.023 / U:30.384 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site