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i2c: extend documentation about retvals of master_xfer functions

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It was stated how the error codes should be. It was not stated what the
regular case should return. Add this.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
This commit is contained in:
Wolfram Sang 2022-07-24 20:46:28 +02:00 committed by Wolfram Sang
parent 6435319c34
commit a11821495f
1 changed files with 2 additions and 1 deletions
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include/linux/i2c.h
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@ -537,7 +537,8 @@ i2c_register_board_info(int busnum, struct i2c_board_info const *info,
*
* The return codes from the ``master_xfer{_atomic}`` fields should indicate the
* type of error code that occurred during the transfer, as documented in the
* Kernel Documentation file Documentation/i2c/fault-codes.rst.
* Kernel Documentation file Documentation/i2c/fault-codes.rst. Otherwise, the
* number of messages executed should be returned.
*/
struct i2c_algorithm {
/*