On Mon, Feb 22, 2021 at 01:07:32PM +0000, Daniel Scally wrote:

Some places in the kernel allow users to map resources to a device
using device name (for example, in the struct 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.shevchenko@linux.intel.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Daniel Scally <djrscally@gmail.com>

Acked-by: Wolfram Sang <wsa@kernel.org> # for changing I2C core