This is a note to let you know that I've just added the patch titled
usb: dwc3: qcom: Add missing DWC3 OF node refcount decrement
to the 5.11-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-dwc3-qcom-add-missing-dwc3-of-node-refcount-decrement.patch
and it can be found in the queue-5.11 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 1cffb1c66499a9db9a735473778abf8427d16287 Mon Sep 17 00:00:00 2001
From: Serge Semin <Sergey.Semin@xxxxxxxxxxxxxxxxxxxx>
Date: Fri, 12 Feb 2021 23:55:19 +0300
Subject: usb: dwc3: qcom: Add missing DWC3 OF node refcount decrement
From: Serge Semin <Sergey.Semin@xxxxxxxxxxxxxxxxxxxx>
commit 1cffb1c66499a9db9a735473778abf8427d16287 upstream.
of_get_child_by_name() increments the reference counter of the OF node it
managed to find. So after the code is done using the device node, the
refcount must be decremented. Add missing of_node_put() invocation then
to the dwc3_qcom_of_register_core() method, since DWC3 OF node is being
used only there.
Fixes: a4333c3a6ba9 ("usb: dwc3: Add Qualcomm DWC3 glue driver")
Signed-off-by: Serge Semin <Sergey.Semin@xxxxxxxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20210212205521.14280-1-Sergey.Semin@xxxxxxxxxxxxxxxxxxxx
Cc: stable <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/dwc3/dwc3-qcom.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
--- a/drivers/usb/dwc3/dwc3-qcom.c
+++ b/drivers/usb/dwc3/dwc3-qcom.c
@@ -639,16 +639,19 @@ static int dwc3_qcom_of_register_core(st
ret = of_platform_populate(np, NULL, NULL, dev);
if (ret) {
dev_err(dev, "failed to register dwc3 core - %d\n", ret);
- return ret;
+ goto node_put;
}
qcom->dwc3 = of_find_device_by_node(dwc3_np);
if (!qcom->dwc3) {
+ ret = -ENODEV;
dev_err(dev, "failed to get dwc3 platform device\n");
- return -ENODEV;
}
- return 0;
+node_put:
+ of_node_put(dwc3_np);
+
+ return ret;
}
static int dwc3_qcom_probe(struct platform_device *pdev)
Patches currently in stable-queue which might be from Sergey.Semin@xxxxxxxxxxxxxxxxxxxx are
queue-5.11/usb-dwc3-qcom-add-missing-dwc3-of-node-refcount-decrement.patch
queue-5.11/mips-kernel-reserve-exception-base-early-to-prevent-.patch
