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authorRoger Quadros <rogerq@ti.com>2014-07-10 11:55:02 +0530
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-07-11 18:23:49 -0700
commite73b49f1c4e75c44d62585cc3e5b9c7894b61c32 (patch)
tree95b3336a3ec82f1b434b38747179e69b54cccbd6
parentbf5baf954a8249ad565862faa98accb19f3ab957 (diff)
downloadlinux-e73b49f1c4e75c44d62585cc3e5b9c7894b61c32.tar.gz
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>
-rw-r--r--drivers/phy/phy-core.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/phy/phy-core.c b/drivers/phy/phy-core.c
index c64a2f3b2d6..49c44653010 100644
--- 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);
}