This is a note to let you know that I've just added the patch titled usb: musb: sunxi: Explicitly release USB PHY on exit 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-musb-sunxi-explicitly-release-usb-phy-on-exit.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 6ed05c68cbcae42cd52b8e53b66952bfa9c002ce Mon Sep 17 00:00:00 2001 From: Jonathan Liu <net147@xxxxxxxxx> Date: Mon, 9 Oct 2017 22:46:13 -0500 Subject: usb: musb: sunxi: Explicitly release USB PHY on exit From: Jonathan Liu <net147@xxxxxxxxx> commit 6ed05c68cbcae42cd52b8e53b66952bfa9c002ce upstream. This fixes a kernel oops when unloading the driver due to usb_put_phy being called after usb_phy_generic_unregister when the device is detached. Calling usb_phy_generic_unregister causes x->dev->driver to be NULL in usb_put_phy and results in a NULL pointer dereference. Signed-off-by: Jonathan Liu <net147@xxxxxxxxx> Signed-off-by: Bin Liu <b-liu@xxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/usb/musb/sunxi.c | 2 ++ 1 file changed, 2 insertions(+) --- a/drivers/usb/musb/sunxi.c +++ b/drivers/usb/musb/sunxi.c @@ -313,6 +313,8 @@ static int sunxi_musb_exit(struct musb * if (test_bit(SUNXI_MUSB_FL_HAS_SRAM, &glue->flags)) sunxi_sram_release(musb->controller->parent); + devm_usb_put_phy(glue->dev, glue->xceiv); + return 0; } Patches currently in stable-queue which might be from net147@xxxxxxxxx are queue-4.9/usb-musb-check-for-host-mode-using-is_host_active-on-reset-interrupt.patch queue-4.9/usb-musb-sunxi-explicitly-release-usb-phy-on-exit.patch