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    Subject[PATCH v4 4/5] dell-wmi: properly process Dell Instant Launch hotkey
    Date
    On models on which an SMBIOS request needs to be issued in order for WMI
    events to be generated, pressing the Dell Instant Launch hotkey does not
    raise an i8042 interrupt - only a WMI event is generated (0xe025 on Dell
    Vostro V131). Thus, the 0xe025 event should only be ignored on machines
    which do not require an SMBIOS request for enabling WMI.

    Signed-off-by: Michał Kępień <kernel@kempniu.pl>
    ---
    drivers/platform/x86/dell-wmi.c | 5 ++++-
    1 file changed, 4 insertions(+), 1 deletion(-)

    diff --git a/drivers/platform/x86/dell-wmi.c b/drivers/platform/x86/dell-wmi.c
    index 65edd93..ffc957b5 100644
    --- a/drivers/platform/x86/dell-wmi.c
    +++ b/drivers/platform/x86/dell-wmi.c
    @@ -111,7 +111,7 @@ static const struct key_entry dell_wmi_legacy_keymap[] __initconst = {
    { KE_IGNORE, 0xe020, { KEY_MUTE } },

    /* Shortcut and audio panel keys */
    - { KE_IGNORE, 0xe025, { KEY_RESERVED } },
    + { KE_KEY, 0xe025, { KEY_PROG4 } },
    { KE_IGNORE, 0xe026, { KEY_RESERVED } },

    { KE_IGNORE, 0xe02e, { KEY_VOLUMEDOWN } },
    @@ -235,6 +235,9 @@ static void dell_wmi_process_key(int reported_key)
    acpi_video_handles_brightness_key_presses())
    return;

    + if (key->keycode == KEY_PROG4 && !wmi_requires_smbios_request)
    + return;
    +
    sparse_keymap_report_entry(dell_wmi_input_dev, key, 1, true);
    }

    --
    1.7.10.4
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