This is a note to let you know that I've just added the patch titled
USB: ledtrig-usbport: fix of-node leak
to the 4.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
usb-ledtrig-usbport-fix-of-node-leak.patch
and it can be found in the queue-4.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Fri Mar 16 15:11:07 CET 2018
From: Johan Hovold <johan@xxxxxxxxxx>
Date: Thu, 9 Nov 2017 18:07:22 +0100
Subject: USB: ledtrig-usbport: fix of-node leak
From: Johan Hovold <johan@xxxxxxxxxx>
[ Upstream commit 03310a15484ab6a8f6d91bbf7fe486b17275c09a ]
This code looks up a USB device node from a given parent USB device but
never dropped its reference to the returned node.
As only the address of the node is used for a later matching, the
reference can be dropped immediately.
Note that this trigger implementation confuses the description of the
USB device connected to a port with the port itself (which does not have
a device-tree representation).
Fixes: 4f04c210d031 ("usb: core: read USB ports from DT in the usbport LED trigger driver")
Cc: Rafał Miłecki <rafal@xxxxxxxxxx>
Signed-off-by: Johan Hovold <johan@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/core/ledtrig-usbport.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
--- a/drivers/usb/core/ledtrig-usbport.c
+++ b/drivers/usb/core/ledtrig-usbport.c
@@ -137,11 +137,17 @@ static bool usbport_trig_port_observed(s
if (!led_np)
return false;
- /* Get node of port being added */
+ /*
+ * Get node of port being added
+ *
+ * FIXME: This is really the device node of the connected device
+ */
port_np = usb_of_get_child_node(usb_dev->dev.of_node, port1);
if (!port_np)
return false;
+ of_node_put(port_np);
+
/* Amount of trigger sources for this LED */
count = of_count_phandle_with_args(led_np, "trigger-sources",
"#trigger-source-cells");
Patches currently in stable-queue which might be from johan@xxxxxxxxxx are
queue-4.15/usb-ledtrig-usbport-fix-of-node-leak.patch
queue-4.15/serial-core-mark-port-as-initialized-in-autoconfig.patch