Re: [PATCH] Disable i8042 checks on Intel Apple Macs
From: Pekka Enberg
Date: Tue May 04 2010 - 13:55:51 EST
On Tue, May 4, 2010 at 8:36 PM, Bastien Nocera <hadess@xxxxxxxxxx> wrote:
> 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
My Macbook also complains (doesn't hang though) about this:
Acked-by: Pekka Enberg <penberg@xxxxxxxxxxxxxx>
> Signed-off-by: Bastien Nocera <hadess@xxxxxxxxxx>
> ---
> 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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