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i2c: remove i2c_lock_adapter and use i2c_lock_bus directly

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The i2c_lock_adapter name is ambiguous since it is unclear if it
refers to the root adapter or the adapter you name in the argument.
The natural interpretation is the adapter you name in the argument,
but there are historical reasons for that not being the case; it
in fact locks the root adapter. Just remove the function and force
users to spell out the I2C_LOCK_ROOT_ADAPTER name to indicate what
is really going on. Also remove i2c_unlock_adapter, of course.

This patch was generated with

git grep -l 'i2c_\(un\)\?lock_adapter' \
| xargs sed -i 's/i2c_\(un\)\?lock_adapter(\([^)]*\))/'\
'i2c_\1lock_bus(\2, I2C_LOCK_ROOT_ADAPTER)/g'

followed by white-space touch-up.

Signed-off-by: Peter Rosin <[email protected]>
Acked-by: Jonathan Cameron <[email protected]>
Tested-by: Sekhar Nori <[email protected]>
Signed-off-by: Wolfram Sang <[email protected]>
This commit is contained in:
Peter Rosin 2018-06-20 07:18:03 +02:00 • committed by Wolfram Sang
commit 3f3a89e1d7
8 changed files with 38 additions and 50 deletions
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4
drivers/iio/temperature/mlx90614.c
View file

@ -433,11 +433,11 @@ static int mlx90614_wakeup(struct mlx90614_data *data)
dev_dbg(&data->client->dev, "Requesting wake-up");
i2c_lock_adapter(data->client->adapter);
i2c_lock_bus(data->client->adapter, I2C_LOCK_ROOT_ADAPTER);
gpiod_direction_output(data->wakeup_gpio, 0);
msleep(MLX90614_TIMING_WAKEUP);
gpiod_direction_input(data->wakeup_gpio);
i2c_unlock_adapter(data->client->adapter);
i2c_unlock_bus(data->client->adapter, I2C_LOCK_ROOT_ADAPTER);
data->ready_timestamp = jiffies +
msecs_to_jiffies(MLX90614_TIMING_STARTUP);