i2c: Provide compatibility links for i2c adapters

Some user-space applications may be relying on i2c adapters showing up
as class devices in sysfs. Provide compatibility links for them for
the time being. We will remove them after a long transition period.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Kay Sievers <kay.sievers@vrfy.org>

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/i2c/Kconfig b/drivers/i2c/Kconfig
index 711ca08ab776..d7ece131b4f4 100644
--- a/drivers/i2c/Kconfig
+++ b/drivers/i2c/Kconfig
@@ -27,6 +27,14 @@ config I2C_BOARDINFO
         boolean
         default y
 
+config I2C_COMPAT
+        boolean "Enable compatibility bits for old user-space"
+        default y
+        help
+          Say Y here if you intend to run lm-sensors 3.1.1 or older, or any
+          other user-space package which expects i2c adapters to be class
+          devices. If you don't know, say Y.
+
 config I2C_CHARDEV
         tristate "I2C device interface"
         help