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-rw-r--r--Documentation/i2c/fault-codes.rst4
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/i2c/fault-codes.rst b/Documentation/i2c/fault-codes.rst
index 80b14e718b..b0864d1268 100644
--- 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