Documentation: i2c: add fault code for not supporting 10 bit addresses

Document the specific fault code when 10 bit addresses cannot be
supported. It is used for years, only the documentation slipped through
the cracks.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>

diff --git a/Documentation/i2c/fault-codes.rst b/Documentation/i2c/fault-codes.rst
index 80b14e718b525de73915941b0f0a622a41e9f8b3..b0864d1268bd42ce4a6c3849da58cccc0c4d6789 100644 (file)
--- a/Documentation/i2c/fault-codes.rst
+++ b/Documentation/i2c/fault-codes.rst
@@ -39,6 +39,10 @@ Also, codes returned by adapter probe methods follow rules which are
 specific to their host bus (such as PCI, or the platform bus).
 
 
+EAFNOSUPPORT
+       Returned by I2C adapters not supporting 10 bit addresses when
+       they are requested to use such an address.
+
 EAGAIN
        Returned by I2C adapters when they lose arbitration in master
        transmit mode:  some other master was transmitting different