thinkpad-acpi: improve Kconfig help text
Document that rfkill and ALSA functionality exists, but requires the
subsystems to be available, and not modular if thinkpad-acpi is not
modular.
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig
index 2462dc3..db32c25 100644
--- a/drivers/platform/x86/Kconfig
+++ b/drivers/platform/x86/Kconfig
@@ -231,6 +231,11 @@
This driver was formerly known as ibm-acpi.
+ Extra functionality will be available if the rfkill (CONFIG_RFKILL)
+ and/or ALSA (CONFIG_SND) subsystems are available in the kernel.
+ Note that if you want ThinkPad-ACPI to be built-in instead of
+ modular, ALSA and rfkill will also have to be built-in.
+
If you have an IBM or Lenovo ThinkPad laptop, say Y or M here.
config THINKPAD_ACPI_ALSA_SUPPORT