Maccraft123 has uploaded this change for review.
mb/lenovo/x201: Kconfig option to disable Q50 ACPI Method
Q50 Method can cause data loss in some circumstances,
therefore I think there should be Kconfig option to disable it.
EC triggers _Q50 when machine is docked and AC power supply is
removed. If OS hasn't unmounted drive that is connected via USB or
Ultrabay this behaviour causes data loss.
Change-Id: I522ff7769267c88125397b7df75d313d92d5622f
Signed-off-by: Maciej Matuszczyk <maccraft123mc@gmail.com>
---
M src/mainboard/lenovo/x201/Kconfig
1 file changed, 9 insertions(+), 0 deletions(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/81/38681/1
diff --git a/src/mainboard/lenovo/x201/Kconfig b/src/mainboard/lenovo/x201/Kconfig
index a94d24e..3e83bdc 100644
--- a/src/mainboard/lenovo/x201/Kconfig
+++ b/src/mainboard/lenovo/x201/Kconfig
@@ -42,6 +42,15 @@
string
default "src/mainboard/$(CONFIG_MAINBOARD_DIR)/vboot-rwa.fmd" if VBOOT
+config DISABLE_Q50
+ bool "Disable _Q50 ACPI Method"
+ default n
+ help
+ This option disabled _Q50 Method that causes undock on removal of
+ AC power adapter. This behaviour can cause data loss by disconnecting
+ Ultrabay device without unmounting it first.
+ This option also disables the undock button on X200 Ultrabase.
+
config MAINBOARD_DIR
string
default "lenovo/x201"
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