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-rw-r--r--drivers/platform/x86/Kconfig24
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig
index 3608081bc3e0..d45c6ab729f8 100644
--- a/drivers/platform/x86/Kconfig
+++ b/drivers/platform/x86/Kconfig
@@ -226,6 +226,30 @@ config THINKPAD_ACPI_DEBUG
If you are not sure, say N here.
+config THINKPAD_ACPI_UNSAFE_LEDS
+ bool "Allow control of important LEDs (unsafe)"
+ depends on THINKPAD_ACPI
+ default n
+ ---help---
+ Overriding LED state on ThinkPads can mask important
+ firmware alerts (like critical battery condition), or misled
+ the user into damaging the hardware (undocking or ejecting
+ the bay while buses are still active), etc.
+
+ LED control on the ThinkPad is write-only (with very few
+ exceptions on very ancient models), which makes it
+ impossible to know beforehand if important information will
+ be lost when one changes LED state.
+
+ Users that know what they are doing can enable this option
+ and the driver will allow control of every LED, including
+ the ones on the dock stations.
+
+ Never enable this option on a distribution kernel.
+
+ Say N here, unless you are building a kernel for your own
+ use, and need to control the important firmware LEDs.
+
config THINKPAD_ACPI_DOCK
bool "Legacy Docking Station Support"
depends on THINKPAD_ACPI