mmc: core: Convert mmc_driver to device_driver

The struct mmc_driver adds an extra layer on top of the struct
device_driver. That would be fine, if there were a good reason, but
that's not the case.

Let's simplify code by converting to the common struct device_driver
instead and thus also removing superfluous overhead.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

1 files changed, 8 insertions, 33 deletions

diff --git a/drivers/mmc/core/bus.c b/drivers/mmc/core/bus.c
index 2f375283c423..5ca562ccfcf3 100644
--- a/drivers/mmc/core/bus.c
+++ b/drivers/mmc/core/bus.c
@@ -25,8 +25,6 @@
 #include "sdio_cis.h"
 #include "bus.h"
 
-#define to_mmc_driver(d)        container_of(d, struct mmc_driver, drv)
-
 static ssize_t type_show(struct device *dev,
         struct device_attribute *attr, char *buf)
 {
@@ -106,33 +104,14 @@ mmc_bus_uevent(struct device *dev, struct kobj_uevent_env *env)
         return retval;
 }
 
-static int mmc_bus_probe(struct device *dev)
-{
-        struct mmc_driver *drv = to_mmc_driver(dev->driver);
-        struct mmc_card *card = mmc_dev_to_card(dev);
-
-        return drv->probe(card);
-}
-
-static int mmc_bus_remove(struct device *dev)
-{
-        struct mmc_driver *drv = to_mmc_driver(dev->driver);
-        struct mmc_card *card = mmc_dev_to_card(dev);
-
-        drv->remove(card);
-
-        return 0;
-}
-
 static void mmc_bus_shutdown(struct device *dev)
 {
-        struct mmc_driver *drv = to_mmc_driver(dev->driver);
         struct mmc_card *card = mmc_dev_to_card(dev);
         struct mmc_host *host = card->host;
         int ret;
 
-        if (dev->driver && drv->shutdown)
-                drv->shutdown(card);
+        if (dev->driver && dev->driver->shutdown)
+                dev->driver->shutdown(dev);
 
         if (host->bus_ops->shutdown) {
                 ret = host->bus_ops->shutdown(host);
@@ -201,8 +180,6 @@ static struct bus_type mmc_bus_type = {
         .dev_groups     = mmc_dev_groups,
         .match          = mmc_bus_match,
         .uevent         = mmc_bus_uevent,
-        .probe          = mmc_bus_probe,
-        .remove         = mmc_bus_remove,
         .shutdown       = mmc_bus_shutdown,
         .pm             = &mmc_bus_pm_ops,
 };
@@ -221,24 +198,22 @@ void mmc_unregister_bus(void)
  *      mmc_register_driver - register a media driver
  *      @drv: MMC media driver
  */
-int mmc_register_driver(struct mmc_driver *drv)
+int mmc_register_driver(struct device_driver *drv)
 {
-        drv->drv.bus = &mmc_bus_type;
-        return driver_register(&drv->drv);
+        drv->bus = &mmc_bus_type;
+        return driver_register(drv);
 }
-
 EXPORT_SYMBOL(mmc_register_driver);
 
 /**
  *      mmc_unregister_driver - unregister a media driver
  *      @drv: MMC media driver
  */
-void mmc_unregister_driver(struct mmc_driver *drv)
+void mmc_unregister_driver(struct device_driver *drv)
 {
-        drv->drv.bus = &mmc_bus_type;
-        driver_unregister(&drv->drv);
+        drv->bus = &mmc_bus_type;
+        driver_unregister(drv);
 }
-
 EXPORT_SYMBOL(mmc_unregister_driver);
 
 static void mmc_release_card(struct device *dev)