Merge branch 'mdio-mux-Misc-fix'

Corentin Labbe says:

====================
net: mdio-mux: Misc fix

This patch series fix minor problems found when working on the
dwmac-sun8i syscon mdio-mux.

Changes since v1:
- Removed obsolete comment about of_mdio_find_bus/put_device
- removed more DRV_VERSION
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 5 insertions, 16 deletions

diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig
index 5afe6fdcc968..a9d16a3af514 100644
--- a/drivers/net/phy/Kconfig
+++ b/drivers/net/phy/Kconfig
@@ -85,7 +85,7 @@ config MDIO_BUS_MUX_MMIOREG
 	  parent bus.  Child bus selection is under the control of one of
 	  the FPGA's registers.
 
-	  Currently, only 8-bit registers are supported.
+	  Currently, only 8/16/32 bits registers are supported.
 
 config MDIO_CAVIUM
 	tristate
diff --git a/drivers/net/phy/mdio-mux.c b/drivers/net/phy/mdio-mux.c
index 942ceaf3fd3f..6f75e9f27fed 100644
--- a/drivers/net/phy/mdio-mux.c
+++ b/drivers/net/phy/mdio-mux.c
@@ -13,7 +13,6 @@
 #include <linux/module.h>
 #include <linux/phy.h>
 
-#define DRV_VERSION "1.0"
 #define DRV_DESCRIPTION "MDIO bus multiplexer driver"
 
 struct mdio_mux_child_bus;
@@ -117,10 +116,11 @@ int mdio_mux_init(struct device *dev,
 	} else {
 		parent_bus_node = NULL;
 		parent_bus = mux_bus;
+		get_device(&parent_bus->dev);
 	}
 
 	pb = devm_kzalloc(dev, sizeof(*pb), GFP_KERNEL);
-	if (pb == NULL) {
+	if (!pb) {
 		ret_val = -ENOMEM;
 		goto err_pb_kz;
 	}
@@ -144,10 +144,7 @@ int mdio_mux_init(struct device *dev,
 		}
 
 		cb = devm_kzalloc(dev, sizeof(*cb), GFP_KERNEL);
-		if (cb == NULL) {
-			dev_err(dev,
-				"Error: Failed to allocate memory for child %pOF\n",
-				child_bus_node);
+		if (!cb) {
 			ret_val = -ENOMEM;
 			continue;
 		}
@@ -156,9 +153,6 @@ int mdio_mux_init(struct device *dev,
 
 		cb->mii_bus = mdiobus_alloc();
 		if (!cb->mii_bus) {
-			dev_err(dev,
-				"Error: Failed to allocate MDIO bus for child %pOF\n",
-				child_bus_node);
 			ret_val = -ENOMEM;
 			devm_kfree(dev, cb);
 			continue;
@@ -185,16 +179,13 @@ int mdio_mux_init(struct device *dev,
 	}
 	if (pb->children) {
 		*mux_handle = pb;
-		dev_info(dev, "Version " DRV_VERSION "\n");
 		return 0;
 	}
 
 	dev_err(dev, "Error: No acceptable child buses found\n");
 	devm_kfree(dev, pb);
 err_pb_kz:
-	/* balance the reference of_mdio_find_bus() took */
-	if (!mux_bus)
-		put_device(&parent_bus->dev);
+	put_device(&parent_bus->dev);
 err_parent_bus:
 	of_node_put(parent_bus_node);
 	return ret_val;
@@ -212,12 +203,10 @@ void mdio_mux_uninit(void *mux_handle)
 		cb = cb->next;
 	}
 
-	/* balance the reference of_mdio_find_bus() in mdio_mux_init() took */
 	put_device(&pb->mii_bus->dev);
 }
 EXPORT_SYMBOL_GPL(mdio_mux_uninit);
 
 MODULE_DESCRIPTION(DRV_DESCRIPTION);
-MODULE_VERSION(DRV_VERSION);
 MODULE_AUTHOR("David Daney");
 MODULE_LICENSE("GPL");