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[PATCH 3.16 046/370] USB: phy: am335x-control: fix device and of_node leaks

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  [PATCH 3.16 046/370] USB: phy: am335x-control: fix device and  of_node leaks Ben Hutchings <ben@decadent.org.uk> - 2017-03-10 15:40 +0100

#1597861 — [PATCH 3.16 046/370] USB: phy: am335x-control: fix device and of_node leaks

3.16.42-rc1 review patch.  If anyone has any objections, please let me know.

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

From: Johan Hovold <johan@kernel.org>

commit 015105b12183556771e111e93f5266851e7c5582 upstream.

Make sure to drop the references taken by of_parse_phandle() and
bus_find_device() before returning from am335x_get_phy_control().

Note that there is no guarantee that the devres-managed struct
phy_control will be valid for the lifetime of the sibling phy device
regardless of this change.

Fixes: 3bb869c8b3f1 ("usb: phy: Add AM335x PHY driver")
Acked-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
 drivers/usb/phy/phy-am335x-control.c | 2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/usb/phy/phy-am335x-control.c
+++ b/drivers/usb/phy/phy-am335x-control.c
@@ -126,10 +126,12 @@ struct phy_control *am335x_get_phy_contr
 		return NULL;
 
 	dev = bus_find_device(&platform_bus_type, NULL, node, match);
+	of_node_put(node);
 	if (!dev)
 		return NULL;
 
 	ctrl_usb = dev_get_drvdata(dev);
+	put_device(dev);
 	if (!ctrl_usb)
 		return NULL;
 	return &ctrl_usb->phy_ctrl;

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