i2c: Constify i2c_get_clientdata's parameter

i2c_get_clientdata doesn't change the i2c_client it is passed as a
parameter, so it can be constified. Same for i2c_get_adapdata.

Signed-off-by: Jean Delvare <khali@linux-fr.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/Documentation/i2c/writing-clients b/Documentation/i2c/writing-clients
index d73ee117a8c..3b01350c149 100644
--- a/Documentation/i2c/writing-clients
+++ b/Documentation/i2c/writing-clients
@@ -83,7 +83,7 @@ be very useful.
         void i2c_set_clientdata(struct i2c_client *client, void *data);
 
         /* retrieve the value */
-        void *i2c_get_clientdata(struct i2c_client *client);
+        void *i2c_get_clientdata(const struct i2c_client *client);
 
 An example structure is below.