x86: Add i8042 pre-detection hook to x86_platform_ops
Some x86 platforms like Intel MID platforms don't have i8042 controllers, and i8042 driver's probe to some legacy IO ports may hang the MID processor. With this hook, i8042 driver can runtime check and skip the probe when the pretection fail which also saves some probe time [ hpa note: this is currently a compile-time check, which breaks the i386 allyesconfig build. This patch series thus does fix a regression. ] Signed-off-by: Feng Tang <feng.tang@intel.com> LKML-Reference: <1278342202-10973-2-git-send-email-feng.tang@intel.com> Acked-by: Dmitry Torokhov <dtor@mail.ru> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
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