[PATCH 3.15 36/84] phy: core: Fix error path in phy_create()

From: Greg Kroah-Hartman
Date: Tue Jul 15 2014 - 19:41:32 EST

3.15-stable review patch. If anyone has any objections, please let me know.


From: Roger Quadros <rogerq@xxxxxx>

commit e73b49f1c4e75c44d62585cc3e5b9c7894b61c32 upstream.

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.

Signed-off-by: Roger Quadros <rogerq@xxxxxx>
Signed-off-by: Kishon Vijay Abraham I <kishon@xxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

drivers/phy/phy-core.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)

--- a/drivers/phy/phy-core.c
+++ b/drivers/phy/phy-core.c
@@ -614,8 +614,9 @@ struct phy *phy_create(struct device *de
return phy;

- put_device(&phy->dev);
- ida_remove(&phy_ida, phy->id);
+ put_device(&phy->dev); /* calls phy_release() which frees resources */
+ return ERR_PTR(ret);
return ERR_PTR(ret);
@@ -799,7 +800,7 @@ static void phy_release(struct device *d

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);

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