From: Arjun Sreedharan <arjun024@gmail.com>
Date: Mon, 18 Aug 2014 05:47:33 +0000 (+0530)
Subject: usb: phy: return -ENODEV on failure of try_module_get
X-Git-Tag: submit/tizen/20160422.055611~1^2~99^2~11^2~189
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f259d867e35ffc1bd240d41c72278beec1faee33;p=sdk%2Femulator%2Femulator-kernel.git

usb: phy: return -ENODEV on failure of try_module_get

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@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Cc: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/usb/phy/phy.c b/drivers/usb/phy/phy.c
index 8afa813d690b..0180eef05656 100644
--- a/drivers/usb/phy/phy.c
+++ b/drivers/usb/phy/phy.c
@@ -229,6 +229,9 @@ struct usb_phy *usb_get_phy_dev(struct device *dev, u8 index)
 	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;
 	}