1 files changed, 11 insertions, 2 deletions

diff --git a/drivers/thermal/Kconfig b/drivers/thermal/Kconfig
index 35c066489a19..5f88d767671e 100644
--- a/drivers/thermal/Kconfig
+++ b/drivers/thermal/Kconfig
@@ -136,6 +136,7 @@ config SPEAR_THERMAL
 config RCAR_THERMAL
         tristate "Renesas R-Car thermal driver"
         depends on ARCH_SHMOBILE || COMPILE_TEST
+        depends on HAS_IOMEM
         help
           Enable this to plug the R-Car thermal sensor driver into the Linux
           thermal framework.
@@ -210,8 +211,16 @@ config ACPI_INT3403_THERMAL
         tristate "ACPI INT3403 thermal driver"
         depends on X86 && ACPI
         help
-          This driver uses ACPI INT3403 device objects. If present, it will
-          register each INT3403 thermal sensor as a thermal zone.
+          Newer laptops and tablets that use ACPI may have thermal sensors
+          outside the core CPU/SOC for thermal safety reasons. These
+          temperature sensors are also exposed for the OS to use via the so
+          called INT3403 ACPI object. This driver will, on devices that have
+          such sensors, expose the temperature information from these sensors
+          to userspace via the normal thermal framework. This means that a wide
+          range of applications and GUI widgets can show this information to
+          the user or use this information for making decisions. For example,
+          the Intel Thermal Daemon can use this information to allow the user
+          to select his laptop to run without turning on the fans.
 
 menu "Texas Instruments thermal drivers"
 source "drivers/thermal/ti-soc-thermal/Kconfig"