| Message ID | 1449083238-13179-1-git-send-email-Vincent.Wan@amd.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
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@amd.com> > --- > 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@suse.de> with the small remark that whoever commits it, could add the URL of the microsoft document to the commit message for further reference. Thanks.
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 /*
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@amd.com> --- drivers/input/serio/i8042-x86ia64io.h | 4 ++++ 1 file changed, 4 insertions(+)