i2c: i2c_adapter devices need no driver

Kill i2c_adapter_driver as it doesn't make sense and it prevents
further i2c-core cleanups. i2c_adapter devices are virtual devices
(ex-class devices) and as such they don't need a driver.

Signed-off-by: Jean Delvare <khali@linux-fr.org>

3 files changed, 1 insertions, 15 deletions

diff --git a/drivers/i2c/busses/i2c-isa.c b/drivers/i2c/busses/i2c-isa.c
index a2e75bc9178b..745830bb8e2b 100644
--- a/drivers/i2c/busses/i2c-isa.c
+++ b/drivers/i2c/busses/i2c-isa.c
@@ -139,7 +139,6 @@ static int __init i2c_isa_init(void)
         isa_adapter.nr = ANY_I2C_ISA_BUS;
         isa_adapter.dev.parent = &platform_bus;
         sprintf(isa_adapter.dev.bus_id, "i2c-%d", isa_adapter.nr);
-        isa_adapter.dev.driver = &i2c_adapter_driver;
         isa_adapter.dev.release = &i2c_adapter_dev_release;
         isa_adapter.dev.class = &i2c_adapter_class;
         err = device_register(&isa_adapter.dev);
diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c
index 40a744d73e8c..8dca4848ad92 100644
--- a/drivers/i2c/i2c-core.c
+++ b/drivers/i2c/i2c-core.c
@@ -113,12 +113,6 @@ void i2c_adapter_dev_release(struct device *dev)
         complete(&adap->dev_released);
 }
 
-struct device_driver i2c_adapter_driver = {
-        .owner = THIS_MODULE,
-        .name = "i2c_adapter",
-        .bus = &i2c_bus_type,
-};
-
 /* ------------------------------------------------------------------------- */
 
 /* I2C bus adapters -- one roots each I2C or SMBUS segment */
@@ -202,7 +196,6 @@ int i2c_add_adapter(struct i2c_adapter *adap)
                          "physical device\n", adap->name);
         }
         sprintf(adap->dev.bus_id, "i2c-%d", adap->nr);
-        adap->dev.driver = &i2c_adapter_driver;
         adap->dev.release = &i2c_adapter_dev_release;
         adap->dev.class = &i2c_adapter_class;
         res = device_register(&adap->dev);
@@ -577,16 +570,12 @@ static int __init i2c_init(void)
         retval = bus_register(&i2c_bus_type);
         if (retval)
                 return retval;
-        retval = driver_register(&i2c_adapter_driver);
-        if (retval)
-                return retval;
         return class_register(&i2c_adapter_class);
 }
 
 static void __exit i2c_exit(void)
 {
         class_unregister(&i2c_adapter_class);
-        driver_unregister(&i2c_adapter_driver);
         bus_unregister(&i2c_bus_type);
 }
 
@@ -1174,9 +1163,8 @@ s32 i2c_smbus_xfer(struct i2c_adapter * adapter, u16 addr, unsigned short flags,
 }
 
 
-/* Next four are needed by i2c-isa */
+/* Next three are needed by i2c-isa */
 EXPORT_SYMBOL_GPL(i2c_adapter_dev_release);
-EXPORT_SYMBOL_GPL(i2c_adapter_driver);
 EXPORT_SYMBOL_GPL(i2c_adapter_class);
 EXPORT_SYMBOL_GPL(i2c_bus_type);
 
diff --git a/include/linux/i2c.h b/include/linux/i2c.h
index 7a59dc656657..47c2a1907372 100644
--- a/include/linux/i2c.h
+++ b/include/linux/i2c.h
@@ -38,7 +38,6 @@
 /* --- For i2c-isa ---------------------------------------------------- */
 
 extern void i2c_adapter_dev_release(struct device *dev);
-extern struct device_driver i2c_adapter_driver;
 extern struct class i2c_adapter_class;
 extern struct bus_type i2c_bus_type;