[PATCH 1/2] siox: Use bus_type functions for probe, remote and shutdown

[Uwe Kleine-König]

The eventual goal is to get rid of the callbacks in struct
device_driver.

Signed-off-by: Uwe Kleine-König <u.kleine-koe...@pengutronix.de>
---
 drivers/siox/siox-core.c | 39 +++++++++++++++++++++------------------
 1 file changed, 21 insertions(+), 18 deletions(-)

diff --git a/drivers/siox/siox-core.c b/drivers/siox/siox-core.c
index f8c08fb9891d..7b3a2b63304b 100644
--- a/drivers/siox/siox-core.c
+++ b/drivers/siox/siox-core.c
@@ -512,41 +512,49 @@ static int siox_match(struct device *dev, struct 
device_driver *drv)
        return 1;
 }
 
-static struct bus_type siox_bus_type = {
-       .name = "siox",
-       .match = siox_match,
-};
-
-static int siox_driver_probe(struct device *dev)
+static int siox_probe(struct device *dev)
 {
        struct siox_driver *sdriver = to_siox_driver(dev->driver);
        struct siox_device *sdevice = to_siox_device(dev);
-       int ret;
+       int ret = 0;
+
+       if (sdriver->probe)
+               ret = sdriver->probe(sdevice);
 
-       ret = sdriver->probe(sdevice);
        return ret;
 }
 
-static int siox_driver_remove(struct device *dev)
+static int siox_remove(struct device *dev)
 {
        struct siox_driver *sdriver =
                container_of(dev->driver, struct siox_driver, driver);
        struct siox_device *sdevice = to_siox_device(dev);
-       int ret;
+       int ret = 0;
+
+       if (sdriver->remove)
+               ret = sdriver->remove(sdevice);
 
-       ret = sdriver->remove(sdevice);
        return ret;
 }
 
-static void siox_driver_shutdown(struct device *dev)
+static void siox_shutdown(struct device *dev)
 {
        struct siox_driver *sdriver =
                container_of(dev->driver, struct siox_driver, driver);
        struct siox_device *sdevice = to_siox_device(dev);
 
-       sdriver->shutdown(sdevice);
+       if (sdriver->shutdown)
+               sdriver->shutdown(sdevice);
 }
 
+static struct bus_type siox_bus_type = {
+       .name = "siox",
+       .match = siox_match,
+       .probe = siox_probe,
+       .remove = siox_remove,
+       .shutdown = siox_shutdown,
+};
+
 static ssize_t active_show(struct device *dev,
                           struct device_attribute *attr, char *buf)
 {
@@ -892,11 +900,6 @@ int __siox_driver_register(struct siox_driver *sdriver, 
struct module *owner)
        sdriver->driver.bus = &siox_bus_type;
 
        if (sdriver->probe)
-               sdriver->driver.probe = siox_driver_probe;
-       if (sdriver->remove)
-               sdriver->driver.remove = siox_driver_remove;
-       if (sdriver->shutdown)
-               sdriver->driver.shutdown = siox_driver_shutdown;
 
        ret = driver_register(&sdriver->driver);
        if (ret)
-- 
2.28.0