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Documentation: i2c: slave: give proper example for pm usage

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pm_runtime_forbid was the wrong knob, this is the better one.

Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
This commit is contained in:
Wolfram Sang 2016-07-23 22:04:20 +02:00
parent 38fa8afff0
commit b4cdaf32ce
1 changed files with 3 additions and 3 deletions
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Documentation/i2c/slave-interface
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@ -139,9 +139,9 @@ If you want to add slave support to the bus driver:
* implement calls to register/unregister the slave and add those to the
struct i2c_algorithm. When registering, you probably need to set the i2c
slave address and enable slave specific interrupts. If you use runtime pm, you
should use pm_runtime_forbid() because your device usually needs to be powered
on always to be able to detect its slave address. When unregistering, do the
inverse of the above.
should use pm_runtime_get_sync() because your device usually needs to be
powered on always to be able to detect its slave address. When unregistering,
do the inverse of the above.
* Catch the slave interrupts and send appropriate i2c_slave_events to the backend.