i2c_add_adapter
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## Name

i2c_add_adapter — declare i2c adapter, use dynamic bus number

## Synopsis

`int i2c_add_adapter (` | struct i2c_adapter * | adapter`)`;

## Arguments

`adapter`

  the adapter to add

## Context

can sleep

## Description

This routine is used to declare an I2C adapter when its bus number doesn't matter. Examples: for I2C adapters dynamically added by USB links or PCI plugin cards.

When this returns zero, a new bus number was allocated and stored in adap->nr, and the specified adapter became available for clients. Otherwise, a negative errno value is returned.

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