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    Subject[PATCH] Disable i8042 checks on Intel Apple Macs
    From
    Date
    As those computers never had any i8042 controllers, and the
    current lookup code could potentially lock up/hang/wait for
    timeout for long periods of time.

    Fixes intermittent hangs on boot on a MacbookAir1,1

    Signed-off-by: Bastien Nocera <hadess@hadess.net>
    ---
    drivers/input/serio/i8042.c | 18 ++++++++++++++++++
    1 files changed, 18 insertions(+), 0 deletions(-)

    diff --git a/drivers/input/serio/i8042.c b/drivers/input/serio/i8042.c
    index d84a36e..2be7207 100644
    --- a/drivers/input/serio/i8042.c
    +++ b/drivers/input/serio/i8042.c
    @@ -1438,12 +1438,30 @@ static struct platform_driver i8042_driver = {
    .shutdown = i8042_shutdown,
    };

    +static struct dmi_system_id __initdata dmi_system_table[] = {
    + {
    + .matches = {
    + DMI_MATCH(DMI_BIOS_VENDOR, "Apple Computer, Inc.")
    + },
    + },
    + {
    + .matches = {
    + DMI_MATCH(DMI_BIOS_VENDOR, "Apple Inc.")
    + },
    + },
    + {}
    +};
    +
    static int __init i8042_init(void)
    {
    int err;

    dbg_init();

    + /* Intel Apple Macs never have an i8042 controller */
    + if (dmi_check_system(dmi_system_table) > 0)
    + return -ENODEV;
    +
    err = i8042_platform_init();
    if (err)
    return err;
    --
    1.6.6




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