PHY fixed driver: rework release path and update phy_id notation

device_bind_driver() error code returning has been fixed.  release()
function has been written, so that to free resources in correct way; the
release path is now clean.

Before the rework, it used to cause
 Device 'fixed@100:1' does not have a release() function, it is broken
 and must be fixed.
 BUG: at drivers/base/core.c:104 device_release()

 Call Trace:
  [<ffffffff802ec380>] kobject_cleanup+0x53/0x7e
  [<ffffffff802ec3ab>] kobject_release+0x0/0x9
  [<ffffffff802ecf3f>] kref_put+0x74/0x81
  [<ffffffff8035493b>] fixed_mdio_register_device+0x230/0x265
  [<ffffffff80564d31>] fixed_init+0x1f/0x35
  [<ffffffff802071a4>] init+0x147/0x2fb
  [<ffffffff80223b6e>] schedule_tail+0x36/0x92
  [<ffffffff8020a678>] child_rip+0xa/0x12
  [<ffffffff80311714>] acpi_ds_init_one_object+0x0/0x83
  [<ffffffff8020705d>] init+0x0/0x2fb
  [<ffffffff8020a66e>] child_rip+0x0/0x12

Also changed the notation of the fixed phy definition on
mdio bus to the form of <speed>+<duplex> to make it able to be used by
gianfar and ucc_geth that define phy_id strictly as "%d:%d" and cleaned up
the whitespace issues.

Signed-off-by: Vitaly Bordug <vitb@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 38 insertions, 0 deletions

diff --git a/include/linux/phy_fixed.h b/include/linux/phy_fixed.h
new file mode 100644
index 000000000000..04ba70d49fb8
--- /dev/null
+++ b/include/linux/phy_fixed.h
@@ -0,0 +1,38 @@
+#ifndef __PHY_FIXED_H
+#define __PHY_FIXED_H
+
+#define MII_REGS_NUM    29
+
+/* max number of virtual phy stuff */
+#define MAX_PHY_AMNT    10
+/*
+    The idea is to emulate normal phy behavior by responding with
+    pre-defined values to mii BMCR read, so that read_status hook could
+    take all the needed info.
+*/
+
+struct fixed_phy_status {
+        u8 link;
+        u16 speed;
+        u8 duplex;
+};
+
+/*-----------------------------------------------------------------------------
+ *  Private information hoder for mii_bus
+ *-----------------------------------------------------------------------------*/
+struct fixed_info {
+        u16 *regs;
+        u8 regs_num;
+        struct fixed_phy_status phy_status;
+        struct phy_device *phydev;      /* pointer to the container */
+        /* link & speed cb */
+        int (*link_update) (struct net_device *, struct fixed_phy_status *);
+
+};
+
+
+int fixed_mdio_set_link_update(struct phy_device *,
+       int (*link_update) (struct net_device *, struct fixed_phy_status *));
+struct fixed_info *fixed_mdio_get_phydev (int phydev_ind);
+
+#endif /* __PHY_FIXED_H */