[PATCH 3.14 138/203] usb: phy: return -ENODEV on failure of try_module_get

[Greg Kroah-Hartman]

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

------------------

From: Arjun Sreedharan <arjun024@xxxxxxxxx>

commit 2c4e3dbf63b39d44a291db70016c718f45d9cd46 upstream.

When __usb_find_phy_dev() does not return error and
try_module_get() fails, return -ENODEV.

Signed-off-by: Arjun Sreedharan <arjun024@xxxxxxxxx>
Signed-off-by: Felipe Balbi <balbi@xxxxxx>
Cc: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 drivers/usb/phy/phy.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/usb/phy/phy.c
+++ b/drivers/usb/phy/phy.c
@@ -229,6 +229,9 @@ struct usb_phy *usb_get_phy_dev(struct d
 	phy = __usb_find_phy_dev(dev, &phy_bind_list, index);
 	if (IS_ERR(phy) || !try_module_get(phy->dev->driver->owner)) {
 		dev_dbg(dev, "unable to find transceiver\n");
+		if (!IS_ERR(phy))
+			phy = ERR_PTR(-ENODEV);
+
 		goto err0;
 	}
 


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