(I tried to send this patch to linux-input@, but it seems to be currently having some problems, so I'm going directly to LKML).
Certain (broken) pieces of South Bridge hardware will respond to i8042_read_status() on boot with 0x0, despite there not being a real i8042 controller hooked up in the south bridge. This can cause the detection for the i8042 to return a "phantom" device, which hangs up later initialization. Note that using "i8042.nokbd" and/or "i8042.noaux" do not help with this, since this shows up during i8042_controller_check() (before either of those options are checked). This patch adds a command-line option "i8042.disable", which just completely disables any checking for the i8042 controller. Signed-off-by: Chris Lalancette <[EMAIL PROTECTED]>
diff --git a/drivers/input/serio/i8042.c b/drivers/input/serio/i8042.c index 3888dc3..a13039c 100644 --- a/drivers/input/serio/i8042.c +++ b/drivers/input/serio/i8042.c @@ -27,6 +27,10 @@ MODULE_AUTHOR("Vojtech Pavlik <[EMAIL PROTECTED]>"); MODULE_DESCRIPTION("i8042 keyboard and mouse controller driver"); MODULE_LICENSE("GPL"); +static unsigned int i8042_disable; +module_param_named(disable, i8042_disable, bool, 0); +MODULE_PARM_DESC(disable, "Do not probe i8042 at all."); + static unsigned int i8042_nokbd; module_param_named(nokbd, i8042_nokbd, bool, 0); MODULE_PARM_DESC(nokbd, "Do not probe or use KBD port."); @@ -1194,6 +1198,11 @@ static int __init i8042_init(void) { int err; + if (i8042_disable) { + printk(KERN_ERR "i8042.c: Controller disabled by kernel command-line\n"); + return -ENODEV; + } + dbg_init(); err = i8042_platform_init();