Remove useless get_driver()/put_driver() calls

As part of the removal of get_driver()/put_driver(), this patch
(as1512) gets rid of various useless and unnecessary calls in several
drivers.  In some cases it may be desirable to pin the driver by
calling try_module_get(), but that can be done later.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: "David S. Miller" <davem@davemloft.net>
CC: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
CC: Michael Buesch <m@bues.ch>
CC: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
index f320f46..e8c42d6 100644
--- a/drivers/net/phy/phy_device.c
+++ b/drivers/net/phy/phy_device.c
@@ -915,9 +915,7 @@
 
 	phydev = to_phy_device(dev);
 
-	/* Make sure the driver is held.
-	 * XXX -- Is this correct? */
-	drv = get_driver(phydev->dev.driver);
+	drv = phydev->dev.driver;
 	phydrv = to_phy_driver(drv);
 	phydev->drv = phydrv;
 
@@ -957,8 +955,6 @@
 
 	if (phydev->drv->remove)
 		phydev->drv->remove(phydev);
-
-	put_driver(dev->driver);
 	phydev->drv = NULL;
 
 	return 0;