Hi Daniel, On Mon, Jan 18, 2021 at 12:34:24AM +0000, Daniel Scally wrote: > Some places in the kernel allow users to map resources to a device > using device name (for example, gpiod_lookup_table). Currently > this involves waiting for the i2c_client to have been registered so we > can use dev_name(&client->dev). We want to add a function to allow users > to refer to an i2c device by name before it has been instantiated, so > create a macro for the format that's accessible outside the i2c layer > and use it in i2c_dev_set_name() > > Suggested-by: Andy Shevchenko <andriy.shevche...@linux.intel.com> > Signed-off-by: Daniel Scally <djrsca...@gmail.com> > --- > - Used format macro in i2c_dev_set_name() instead of sub func > > drivers/i2c/i2c-core-base.c | 4 ++-- > include/linux/i2c.h | 3 +++ > 2 files changed, 5 insertions(+), 2 deletions(-) > > diff --git a/drivers/i2c/i2c-core-base.c b/drivers/i2c/i2c-core-base.c > index 63ebf722a424..547b8926cac8 100644 > --- a/drivers/i2c/i2c-core-base.c > +++ b/drivers/i2c/i2c-core-base.c > @@ -811,12 +811,12 @@ static void i2c_dev_set_name(struct i2c_adapter *adap, > struct acpi_device *adev = ACPI_COMPANION(&client->dev); > > if (info && info->dev_name) { > - dev_set_name(&client->dev, "i2c-%s", info->dev_name); > + dev_set_name(&client->dev, I2C_DEV_NAME_FORMAT, info->dev_name); > return; > } > > if (adev) { > - dev_set_name(&client->dev, "i2c-%s", acpi_dev_name(adev)); > + dev_set_name(&client->dev, I2C_DEV_NAME_FORMAT, > acpi_dev_name(adev));
Over 80, please wrap. With that, Acked-by: Sakari Ailus <sakari.ai...@linux.intel.com> > return; > } > > diff --git a/include/linux/i2c.h b/include/linux/i2c.h > index 56622658b215..4d40a4b46810 100644 > --- a/include/linux/i2c.h > +++ b/include/linux/i2c.h > @@ -39,6 +39,9 @@ enum i2c_slave_event; > typedef int (*i2c_slave_cb_t)(struct i2c_client *client, > enum i2c_slave_event event, u8 *val); > > +/* I2C Device Name Format - to maintain consistency outside the i2c layer */ > +#define I2C_DEV_NAME_FORMAT "i2c-%s" > + > /* I2C Frequency Modes */ > #define I2C_MAX_STANDARD_MODE_FREQ 100000 > #define I2C_MAX_FAST_MODE_FREQ 400000 > -- > 2.25.1 > -- Sakari Ailus