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i2c: fix wrong comment and symbol export for i2c_add_numbered_adapter() 

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Wolfram Sang 2010-08-31 16:33:18 +02:00 committed by Sascha Hauer
parent 80f9963207
commit cf6d0d0e19
1 changed files with 12 additions and 14 deletions
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26
drivers/i2c/i2c.c
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@ -344,21 +344,19 @@ struct i2c_adapter *i2c_get_adapter(int busnum)
}
/**
* i2c_register_master - register I2C master controller
* i2c_add_numbered_adapter - declare i2c adapter, use static bus number
* @adapter: the adapter to register (with adap->nr initialized)
*
* @param master initialized master, originally from i2c_alloc_master()
*
* I2C master controllers connect to their drivers using some non-I2C
* bus, such as the platform bus. The final stage of probe() in that
* code includes calling i2c_register_master() to hook up to this I2C
* bus glue.
*
* I2C controllers use board specific (often SOC specific) bus
* numbers, and board-specific addressing for I2C devices combines
* those numbers with chip select numbers. Since I2C does not directly
* support dynamic device identification, boards need configuration
* tables telling which chip is at which address.
* This routine is used to declare an I2C adapter when its bus number
* matters. For example, use it for I2C adapters from system-on-chip CPUs,
* or otherwise built in to the system's mainboard, and where i2c_board_info
* is used to properly configure I2C devices.
*
* When this returns zero, the specified adapter became available for
* clients using the bus number provided in adap->nr. Also, the table
* of I2C devices pre-declared using i2c_register_board_info() is scanned,
* and the appropriate driver model device nodes are created. Otherwise, a
* negative errno value is returned.
*/
int i2c_add_numbered_adapter(struct i2c_adapter *adapter)
{
@ -372,4 +370,4 @@ int i2c_add_numbered_adapter(struct i2c_adapter *adapter)
return 0;
}
EXPORT_SYMBOL(i2c_register_master);
EXPORT_SYMBOL(i2c_add_numbered_adapter);