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usb: phy: return an error in usb_get_phy() if try_module_get() fails 

In case we found a matching USB PHY in usb_get_phy() but the call to
try_module_get() fails, we shouldn't return a (probably soon dangling)
pointer but an ERR_PTR instead.

Signed-off-by: Mathias Krause <minipli@googlemail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Mathias Krause 2014-04-15 07:58:15 +02:00 committed by Felipe Balbi
parent ae8dd0cc41
commit 9dc9cb0c9a
1 changed files with 3 additions and 0 deletions
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3
drivers/usb/phy/phy.c
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@ -132,6 +132,9 @@ struct usb_phy *usb_get_phy(enum usb_phy_type type)
if (IS_ERR(phy) || !try_module_get(phy->dev->driver->owner)) {
pr_debug("PHY: unable to find transceiver of type %s\n",
usb_phy_type_string(type));
if (!IS_ERR(phy))
phy = ERR_PTR(-ENODEV);
goto err0;
}