From: Feng Tang Date: Wed, 7 Jul 2010 20:02:16 +0000 (-0700) Subject: input: i8042 - add runtime check in x86's i8042_platform_init X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=5cdfa1c3bbabb809ef3134f741a63e13373a8cad;p=GitHub%2Fmt8127%2Fandroid_kernel_alcatel_ttab.git input: i8042 - add runtime check in x86's i8042_platform_init Then it will first check x86_platforms's i8042 detection result, then go on with normal probe. Signed-off-by: Feng Tang LKML-Reference: <4c34dd482753bb8f1@agluck-desktop.sc.intel.com> Signed-off-by: Tony Luck Acked-by: Dmitry Torokhov Signed-off-by: H. Peter Anvin --- diff --git a/drivers/input/serio/i8042-x86ia64io.h b/drivers/input/serio/i8042-x86ia64io.h index 6168469ad1a6..81003c4739f4 100644 --- a/drivers/input/serio/i8042-x86ia64io.h +++ b/drivers/input/serio/i8042-x86ia64io.h @@ -7,6 +7,10 @@ * the Free Software Foundation. */ +#ifdef CONFIG_X86 +#include +#endif + /* * Names. */ @@ -840,6 +844,12 @@ static int __init i8042_platform_init(void) { int retval; +#ifdef CONFIG_X86 + /* Just return if pre-detection shows no i8042 controller exist */ + if (!x86_platform.i8042_detect()) + return -ENODEV; +#endif + /* * On ix86 platforms touching the i8042 data register region can do really * bad things. Because of this the region is always reserved on ix86 boxes.