phy: core: Fix error path in phy_create()

Prevent resources from being freed twice in case device_add() call
fails within phy_create(). Also use ida_simple_remove() instead of
ida_remove() as we had used ida_simple_get() to allocate the ida.

Cc: 3.13+ <stable@vger.kernel.org> # 3.13+
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/phy/phy-core.c b/drivers/phy/phy-core.c
index c64a2f3..49c4465 100644 (file)
--- a/drivers/phy/phy-core.c
+++ b/drivers/phy/phy-core.c
@@ -614,8 +614,9 @@ struct phy *phy_create(struct device *dev, const struct phy_ops *ops,
        return phy;
 
 put_dev:
-       put_device(&phy->dev);
-       ida_remove(&phy_ida, phy->id);
+       put_device(&phy->dev);  /* calls phy_release() which frees resources */
+       return ERR_PTR(ret);
+
 free_phy:
        kfree(phy);
        return ERR_PTR(ret);
@@ -799,7 +800,7 @@ static void phy_release(struct device *dev)
 
        phy = to_phy(dev);
        dev_vdbg(dev, "releasing '%s'\n", dev_name(dev));
-       ida_remove(&phy_ida, phy->id);
+       ida_simple_remove(&phy_ida, phy->id);
        kfree(phy);
 }