net: miiphybb: Introduce bb_miiphy_alloc()/bb_miiphy_free() wrappers

Introduce bb_miiphy_alloc()/bb_miiphy_free() wrappers to allocate and free
struct bb_miiphy_bus. Make struct bb_miiphy_bus wrap struct mii_dev, which
will become useful later in bb_miiphy_bus accessors, which would be able
to access struct bb_miiphy_bus using container_of, even if the PHY stack
only passes in the inner struct mii_dev .

Reviewed-by: Paul Barker <[email protected]>
Signed-off-by: Marek Vasut <[email protected]>

1 files changed, 19 insertions, 0 deletions

diff --git a/drivers/net/phy/miiphybb.c b/drivers/net/phy/miiphybb.c
index 75d9537b355..66d98d6cc26 100644
--- a/drivers/net/phy/miiphybb.c
+++ b/drivers/net/phy/miiphybb.c
@@ -14,6 +14,7 @@
 
 #include <ioports.h>
 #include <ppc_asm.tmpl>
+#include <malloc.h>
 #include <miiphy.h>
 #include <asm/global_data.h>
 
@@ -30,6 +31,24 @@ static inline struct bb_miiphy_bus *bb_miiphy_getbus(const char *devname)
 	return NULL;
 }
 
+struct bb_miiphy_bus *bb_miiphy_alloc(void)
+{
+	struct bb_miiphy_bus *bus;
+
+	bus = malloc(sizeof(*bus));
+	if (!bus)
+		return bus;
+
+	mdio_init(&bus->mii);
+
+	return bus;
+}
+
+void bb_miiphy_free(struct bb_miiphy_bus *bus)
+{
+	free(bus);
+}
+
 /*****************************************************************************
  *
  * Utility to send the preamble, address, and register (common to read