|
 |
f2c60e |
From 31e64826785b5bafef7a6361516c060be2bca253 Mon Sep 17 00:00:00 2001
|
|
|
f2c60e |
From: Bastien Nocera <hadess@hadess.net>
|
|
|
f2c60e |
Date: Thu, 20 May 2010 10:30:31 -0400
|
|
|
f2c60e |
Subject: [PATCH] disable i8042 check on apple mac
|
|
|
f2c60e |
|
|
|
f2c60e |
As those computers never had any i8042 controllers, and the
|
|
|
f2c60e |
current lookup code could potentially lock up/hang/wait for
|
|
|
f2c60e |
timeout for long periods of time.
|
|
|
f2c60e |
|
|
|
f2c60e |
Fixes intermittent hangs on boot on a MacbookAir1,1
|
|
|
f2c60e |
|
|
|
f2c60e |
Bugzilla: N/A
|
|
|
f2c60e |
Upstream-status: http://lkml.indiana.edu/hypermail/linux/kernel/1005.0/00938.html (and pinged on Dec 17, 2013)
|
|
|
f2c60e |
|
|
|
f2c60e |
Signed-off-by: Bastien Nocera <hadess@hadess.net>
|
|
|
f2c60e |
---
|
|
|
f2c60e |
drivers/input/serio/i8042.c | 22 ++++++++++++++++++++++
|
|
|
f2c60e |
1 file changed, 22 insertions(+)
|
|
|
f2c60e |
|
|
|
f2c60e |
diff --git a/drivers/input/serio/i8042.c b/drivers/input/serio/i8042.c
|
|
|
f2c60e |
index c9c98f0ab284..5137185e14a9 100644
|
|
|
f2c60e |
--- a/drivers/input/serio/i8042.c
|
|
|
f2c60e |
+++ b/drivers/input/serio/i8042.c
|
|
|
f2c60e |
@@ -1540,6 +1540,22 @@ static struct notifier_block i8042_kbd_bind_notifier_block = {
|
|
|
f2c60e |
.notifier_call = i8042_kbd_bind_notifier,
|
|
|
f2c60e |
};
|
|
|
f2c60e |
|
|
|
f2c60e |
+#ifdef CONFIG_DMI
|
|
|
f2c60e |
+static struct dmi_system_id __initdata dmi_system_table[] = {
|
|
|
f2c60e |
+ {
|
|
|
f2c60e |
+ .matches = {
|
|
|
f2c60e |
+ DMI_MATCH(DMI_BIOS_VENDOR, "Apple Computer, Inc.")
|
|
|
f2c60e |
+ },
|
|
|
f2c60e |
+ },
|
|
|
f2c60e |
+ {
|
|
|
f2c60e |
+ .matches = {
|
|
|
f2c60e |
+ DMI_MATCH(DMI_BIOS_VENDOR, "Apple Inc.")
|
|
|
f2c60e |
+ },
|
|
|
f2c60e |
+ },
|
|
|
f2c60e |
+ {}
|
|
|
f2c60e |
+};
|
|
|
f2c60e |
+#endif /*CONFIG_DMI*/
|
|
|
f2c60e |
+
|
|
|
f2c60e |
static int __init i8042_init(void)
|
|
|
f2c60e |
{
|
|
|
f2c60e |
struct platform_device *pdev;
|
|
|
f2c60e |
@@ -1547,6 +1563,12 @@ static int __init i8042_init(void)
|
|
|
f2c60e |
|
|
|
f2c60e |
dbg_init();
|
|
|
f2c60e |
|
|
|
f2c60e |
+#ifdef CONFIG_DMI
|
|
|
f2c60e |
+ /* Intel Apple Macs never have an i8042 controller */
|
|
|
f2c60e |
+ if (dmi_check_system(dmi_system_table) > 0)
|
|
|
f2c60e |
+ return -ENODEV;
|
|
|
f2c60e |
+#endif /*CONFIG_DMI*/
|
|
|
f2c60e |
+
|
|
|
f2c60e |
err = i8042_platform_init();
|
|
|
f2c60e |
if (err)
|
|
|
f2c60e |
return err;
|
|
|
f2c60e |
--
|
|
|
f2c60e |
2.4.3
|
|
|
f2c60e |
|