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authorJesse Keating <jkeating@redhat.com>2010-07-29 16:46:31 -0700
committerJesse Keating <jkeating@redhat.com>2010-07-29 16:46:31 -0700
commit7a32965a104c3363e8505fe566531fcf071cced7 (patch)
treee45cb84552b2b022f49047bbddd9d887753c35bc /disable-i8042-check-on-apple-mac.patch
parent64ba2e5ffde5f2418eb26c700cb0ab62b04e5013 (diff)
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Diffstat (limited to 'disable-i8042-check-on-apple-mac.patch')
-rw-r--r--disable-i8042-check-on-apple-mac.patch59
1 files changed, 59 insertions, 0 deletions
diff --git a/disable-i8042-check-on-apple-mac.patch b/disable-i8042-check-on-apple-mac.patch
new file mode 100644
index 000000000..f99d0f900
--- /dev/null
+++ b/disable-i8042-check-on-apple-mac.patch
@@ -0,0 +1,59 @@
+From 2a79554c864ac58fa2ad982f0fcee2cc2aa33eb5 Mon Sep 17 00:00:00 2001
+From: Bastien Nocera <hadess@hadess.net>
+Date: Thu, 20 May 2010 10:30:31 -0400
+Subject: Disable i8042 checks on Intel Apple Macs
+
+As those computers never had any i8042 controllers, and the
+current lookup code could potentially lock up/hang/wait for
+timeout for long periods of time.
+
+Fixes intermittent hangs on boot on a MacbookAir1,1
+
+Signed-off-by: Bastien Nocera <hadess@hadess.net>
+---
+ drivers/input/serio/i8042.c | 22 ++++++++++++++++++++++
+ 1 files changed, 22 insertions(+), 0 deletions(-)
+
+diff --git a/drivers/input/serio/i8042.c b/drivers/input/serio/i8042.c
+index 6440a8f..4d7cf98 100644
+--- a/drivers/input/serio/i8042.c
++++ b/drivers/input/serio/i8042.c
+@@ -1451,6 +1451,22 @@ static struct platform_driver i8042_driver = {
+ .shutdown = i8042_shutdown,
+ };
+
++#ifdef CONFIG_DMI
++static struct dmi_system_id __initdata dmi_system_table[] = {
++ {
++ .matches = {
++ DMI_MATCH(DMI_BIOS_VENDOR, "Apple Computer, Inc.")
++ },
++ },
++ {
++ .matches = {
++ DMI_MATCH(DMI_BIOS_VENDOR, "Apple Inc.")
++ },
++ },
++ {}
++};
++#endif /*CONFIG_DMI*/
++
+ static int __init i8042_init(void)
+ {
+ struct platform_device *pdev;
+@@ -1458,6 +1474,12 @@ static int __init i8042_init(void)
+
+ dbg_init();
+
++#ifdef CONFIG_DMI
++ /* Intel Apple Macs never have an i8042 controller */
++ if (dmi_check_system(dmi_system_table) > 0)
++ return -ENODEV;
++#endif /*CONFIG_DMI*/
++
+ err = i8042_platform_init();
+ if (err)
+ return err;
+--
+1.7.0.1
+