This is a note to let you know that I've just added the patch titled usb: dwc3: of-simple: fix missing clk_disable_unprepare to the 4.9-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-of-simple-fix-missing-clk_disable_unprepare.patch and it can be found in the queue-4.9 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 Feb 23 11:48:40 CET 2018 From: Andreas Platschek <andreas.platschek@xxxxxxxxxxx> Date: Thu, 7 Dec 2017 11:32:20 +0100 Subject: usb: dwc3: of-simple: fix missing clk_disable_unprepare From: Andreas Platschek <andreas.platschek@xxxxxxxxxxx> [ Upstream commit ded600ea9fb51a495d2fcd21e90351df876488e8 ] If of_clk_get() fails, the clean-up of already initialized clocks should be the same as when clk_prepare_enable() fails. Thus a clk_disable_unprepare() for each clock should be called before the clk_put(). Found by Linux Driver Verification project (linuxtesting.org). Fixes: 16adc674d0d6 ("usb: dwc3: ep0: fix setup_packet_pending initialization") Signed-off-by: Andreas Platschek <andreas.platschek@xxxxxxxxxxx> 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-of-simple.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) --- a/drivers/usb/dwc3/dwc3-of-simple.c +++ b/drivers/usb/dwc3/dwc3-of-simple.c @@ -58,8 +58,10 @@ static int dwc3_of_simple_clk_init(struc clk = of_clk_get(np, i); if (IS_ERR(clk)) { - while (--i >= 0) + while (--i >= 0) { + clk_disable_unprepare(simple->clks[i]); clk_put(simple->clks[i]); + } return PTR_ERR(clk); } Patches currently in stable-queue which might be from andreas.platschek@xxxxxxxxxxx are queue-4.9/usb-dwc3-of-simple-fix-missing-clk_disable_unprepare.patch