1 files changed, 16 insertions, 1 deletions

diff --git a/drivers/i2c/Kconfig b/drivers/i2c/Kconfig
index 5a3bb3d738d8..2f8c76becc6b 100644
--- a/drivers/i2c/Kconfig
+++ b/drivers/i2c/Kconfig
@@ -4,7 +4,7 @@
 
 menuconfig I2C
         tristate "I2C support"
-        depends on HAS_IOMEM
+        depends on !S390
         select RT_MUTEXES
         ---help---
           I2C (pronounce: I-squared-C) is a slow serial bus protocol used in
@@ -49,6 +49,7 @@ config I2C_CHARDEV
 
 config I2C_MUX
         tristate "I2C bus multiplexing support"
+        depends on HAS_IOMEM
         help
           Say Y here if you want the I2C core to support the ability to
           handle multiplexed I2C bus topologies, by presenting each
@@ -86,6 +87,19 @@ config I2C_SMBUS
 source drivers/i2c/algos/Kconfig
 source drivers/i2c/busses/Kconfig
 
+config I2C_STUB
+        tristate "I2C/SMBus Test Stub"
+        depends on EXPERIMENTAL && m
+        default 'n'
+        help
+          This module may be useful to developers of SMBus client drivers,
+          especially for certain kinds of sensor chips.
+
+          If you do build this module, be sure to read the notes and warnings
+          in <file:Documentation/i2c/i2c-stub>.
+
+          If you don't know what to do here, definitely say N.
+
 config I2C_DEBUG_CORE
         bool "I2C Core debugging messages"
         help
@@ -103,6 +117,7 @@ config I2C_DEBUG_ALGO
 
 config I2C_DEBUG_BUS
         bool "I2C Bus debugging messages"
+        depends on HAS_IOMEM
         help
           Say Y here if you want the I2C bus drivers to produce a bunch of
           debug messages to the system log.  Select this if you are having