This is a note to let you know that I've just added the patch titled
usb: dwc3: keystone: check return value
to the 4.4-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-keystone-check-return-value.patch
and it can be found in the queue-4.4 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 Tue Apr 10 10:31:53 CEST 2018
From: Pan Bian <bianpan2016@xxxxxxx>
Date: Sun, 23 Apr 2017 13:55:13 +0800
Subject: usb: dwc3: keystone: check return value
From: Pan Bian <bianpan2016@xxxxxxx>
[ Upstream commit 018047a1dba7636e1f7fdae2cc290a528991d648 ]
Function devm_clk_get() returns an ERR_PTR when it fails. However, in
function kdwc3_probe(), its return value is not checked, which may
result in a bad memory access bug. This patch fixes the bug.
Signed-off-by: Pan Bian <bianpan2016@xxxxxxx>
Signed-off-by: Felipe Balbi <felipe.balbi@xxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/dwc3/dwc3-keystone.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/drivers/usb/dwc3/dwc3-keystone.c
+++ b/drivers/usb/dwc3/dwc3-keystone.c
@@ -112,6 +112,10 @@ static int kdwc3_probe(struct platform_d
dev->dma_mask = &kdwc3_dma_mask;
kdwc->clk = devm_clk_get(kdwc->dev, "usb");
+ if (IS_ERR(kdwc->clk)) {
+ dev_err(kdwc->dev, "unable to get usb clock\n");
+ return PTR_ERR(kdwc->clk);
+ }
error = clk_prepare_enable(kdwc->clk);
if (error < 0) {
Patches currently in stable-queue which might be from bianpan2016@xxxxxxx are
queue-4.4/cx25840-fix-unchecked-return-values.patch
queue-4.4/usb-dwc3-keystone-check-return-value.patch
queue-4.4/rtc-snvs-fix-an-incorrect-check-of-return-value.patch