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Input: i8042 - force synchronous probing of PNP drivers 

We rely on the result of scanning PNP bus for keyboard and mouse devices to
decide whether we should continue initialization of i8042 driver or not, so
the probes can not be asynchronous.

Also, it is not a good idea to unbind either of the PNP devices while i8042
is running, so let's disable bind/unbind for the PNP drivers through sysfs
and rely on i8042 cleaning after itself properly. User can still unbind and
rebind entire i8042 and that will take care of PNP drivers as well.

Reviewed-by: Luis R. Rodriguez <mgrof@kernel.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Dmitry Torokhov 2016-12-12 14:33:37 -08:00
parent ebfb0184ef
commit 1a9027770f
1 changed files with 8 additions and 0 deletions
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8
drivers/input/serio/i8042-x86ia64io.h
View File

@ -910,6 +910,10 @@ static struct pnp_driver i8042_pnp_kbd_driver = {
.name = "i8042 kbd", .name = "i8042 kbd",
.id_table = pnp_kbd_devids, .id_table = pnp_kbd_devids,
.probe = i8042_pnp_kbd_probe, .probe = i8042_pnp_kbd_probe,
.driver = {
.probe_type = PROBE_FORCE_SYNCHRONOUS,
.suppress_bind_attrs = true,
},
}; };
static struct pnp_device_id pnp_aux_devids[] = { static struct pnp_device_id pnp_aux_devids[] = {
@ -932,6 +936,10 @@ static struct pnp_driver i8042_pnp_aux_driver = {
.name = "i8042 aux", .name = "i8042 aux",
.id_table = pnp_aux_devids, .id_table = pnp_aux_devids,
.probe = i8042_pnp_aux_probe, .probe = i8042_pnp_aux_probe,
.driver = {
.probe_type = PROBE_FORCE_SYNCHRONOUS,
.suppress_bind_attrs = true,
},
}; };
static void i8042_pnp_exit(void) static void i8042_pnp_exit(void)