On 2018-05-21 11:49, Julia Lawall wrote: > Drop call to of_match_device, which is subsumed by the subsequent > call to of_device_get_match_data. The code becomes simpler, and a > temporary variable can be dropped. > > The semantic match that makes this change is as follows: > (http://coccinelle.lip6.fr/) > > // <smpl> > @r@ > local idexpression match; > identifier i; > expression x, dev, e, e1; > @@ > - match@i = of_match_device(x, dev); > - if (match) e = of_device_get_match_data(dev); > - else e = e1; > + e = of_device_get_match_data(dev); > + if (!e) e = e1; > > @@ > identifier r.i; > @@ > - const struct of_device_id *i; > ... when != i > // </smpl> > > Signed-off-by: Julia Lawall <Julia.Lawall@xxxxxxx> Reviewed-by: Peter Rosin <peda@xxxxxxxxxx> Cheers, Peter > > --- > drivers/iio/potentiometer/max5481.c | 7 ++----- > drivers/iio/potentiometer/mcp4018.c | 7 ++----- > drivers/iio/potentiometer/mcp4531.c | 7 ++----- > 3 files changed, 6 insertions(+), 15 deletions(-) > > diff --git a/drivers/iio/potentiometer/mcp4018.c b/drivers/iio/potentiometer/mcp4018.c > index 320a7c9..c051ee0 100644 > --- a/drivers/iio/potentiometer/mcp4018.c > +++ b/drivers/iio/potentiometer/mcp4018.c > @@ -147,7 +147,6 @@ static int mcp4018_probe(struct i2c_client *client) > struct device *dev = &client->dev; > struct mcp4018_data *data; > struct iio_dev *indio_dev; > - const struct of_device_id *match; > > if (!i2c_check_functionality(client->adapter, > I2C_FUNC_SMBUS_BYTE)) { > @@ -162,10 +161,8 @@ static int mcp4018_probe(struct i2c_client *client) > i2c_set_clientdata(client, indio_dev); > data->client = client; > > - match = of_match_device(of_match_ptr(mcp4018_of_match), dev); > - if (match) > - data->cfg = of_device_get_match_data(dev); > - else > + data->cfg = of_device_get_match_data(dev); > + if (!data->cfg) > data->cfg = &mcp4018_cfg[i2c_match_id(mcp4018_id, client)->driver_data]; > > indio_dev->dev.parent = dev; > diff --git a/drivers/iio/potentiometer/mcp4531.c b/drivers/iio/potentiometer/mcp4531.c > index df894af..d87ca85 100644 > --- a/drivers/iio/potentiometer/mcp4531.c > +++ b/drivers/iio/potentiometer/mcp4531.c > @@ -360,7 +360,6 @@ static int mcp4531_probe(struct i2c_client *client) > struct device *dev = &client->dev; > struct mcp4531_data *data; > struct iio_dev *indio_dev; > - const struct of_device_id *match; > > if (!i2c_check_functionality(client->adapter, > I2C_FUNC_SMBUS_WORD_DATA)) { > @@ -375,10 +374,8 @@ static int mcp4531_probe(struct i2c_client *client) > i2c_set_clientdata(client, indio_dev); > data->client = client; > > - match = of_match_device(of_match_ptr(mcp4531_of_match), dev); > - if (match) > - data->cfg = of_device_get_match_data(dev); > - else > + data->cfg = of_device_get_match_data(dev); > + if (!data->cfg) > data->cfg = &mcp4531_cfg[i2c_match_id(mcp4531_id, client)->driver_data]; > > indio_dev->dev.parent = dev; > diff --git a/drivers/iio/potentiometer/max5481.c b/drivers/iio/potentiometer/max5481.c > index ffe2761..6d2f13f 100644 > --- a/drivers/iio/potentiometer/max5481.c > +++ b/drivers/iio/potentiometer/max5481.c > @@ -137,7 +137,6 @@ static int max5481_probe(struct spi_device *spi) > struct iio_dev *indio_dev; > struct max5481_data *data; > const struct spi_device_id *id = spi_get_device_id(spi); > - const struct of_device_id *match; > int ret; > > indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*data)); > @@ -149,10 +148,8 @@ static int max5481_probe(struct spi_device *spi) > > data->spi = spi; > > - match = of_match_device(of_match_ptr(max5481_match), &spi->dev); > - if (match) > - data->cfg = of_device_get_match_data(&spi->dev); > - else > + data->cfg = of_device_get_match_data(&spi->dev); > + if (!data->cfg) > data->cfg = &max5481_cfg[id->driver_data]; > > indio_dev->name = id->name; >
