Patch "usb: musb: sunxi: Explicitly release USB PHY on exit" has been added to the 4.9-stable tree

Patch "usb: musb: sunxi: Explicitly release USB PHY on exit" has been added to the 4.9-stable tree

[gregkh]

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@vger.kernel.org> know about it.


>From 6ed05c68cbcae42cd52b8e53b66952bfa9c002ce Mon Sep 17 00:00:00 2001
From: Jonathan Liu <net147@gmail.com>
Date: Mon, 9 Oct 2017 22:46:13 -0500
Subject: usb: musb: sunxi: Explicitly release USB PHY on exit

From: Jonathan Liu <net147@gmail.com>

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@gmail.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 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@gmail.com 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