On Wed, Dec 02, 2015 at 02:07:18PM -0500, Wan Zongshun wrote:
> Detecting x86 platform supporting i8042 or not, we should resort
> to BIOS's FADT i8042 flag per ACPI spec.
>
> Currently, Windows is conforming to this spec, and request this
> flag to detect i8042 supporting.
>
> Signed-off-by: Wan Zongshun <Vincent.Wan@xxxxxxx>
> ---
> drivers/input/serio/i8042-x86ia64io.h | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/drivers/input/serio/i8042-x86ia64io.h b/drivers/input/serio/i8042-x86ia64io.h
> index c115565..73686bd 100644
> --- a/drivers/input/serio/i8042-x86ia64io.h
> +++ b/drivers/input/serio/i8042-x86ia64io.h
> @@ -9,6 +9,7 @@
>
> #ifdef CONFIG_X86
> #include <asm/x86_init.h>
> +#include <linux/acpi.h>
> #endif
>
> /*
> @@ -1047,6 +1048,9 @@ static int __init i8042_platform_init(void)
> /* Just return if pre-detection shows no i8042 controller exist */
> if (!x86_platform.i8042_detect())
> return -ENODEV;
> +
> + if (!(acpi_gbl_FADT.boot_flags & ACPI_FADT_8042))
> + return -ENODEV;
> #endif
Acked-by: Borislav Petkov <bp@xxxxxxx>
with the small remark that whoever commits it, could add the URL of the
microsoft document to the commit message for further reference.
Thanks.
--
Regards/Gruss,
Boris.
ECO tip #101: Trim your mails when you reply.
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