From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S1752612AbdJPMub (ORCPT <rfc822;w@1wt.eu>);
        Mon, 16 Oct 2017 08:50:31 -0400
Received: from fllnx210.ext.ti.com ([198.47.19.17]:19132 "EHLO
        fllnx210.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
        with ESMTP id S1751448AbdJPMu3 (ORCPT
        <rfc822;linux-kernel@vger.kernel.org>);
        Mon, 16 Oct 2017 08:50:29 -0400
Date: Mon, 16 Oct 2017 07:49:49 -0500
From: Bin Liu <b-liu@ti.com>
To: Jonathan Liu <net147@gmail.com>
CC: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Maxime Ripard <maxime.ripard@free-electrons.com>,
        Chen-Yu Tsai <wens@csie.org>, <linux-usb@vger.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
        linux-kernel <linux-kernel@vger.kernel.org>,
        linux-sunxi <linux-sunxi@googlegroups.com>
Subject: Re: [PATCH v2] usb: musb: sunxi: Explicitly release USB PHY on exit
Message-ID: <20171016124949.GA73@LTA0271908.dhcp.ti.com>
Mail-Followup-To: Bin Liu <b-liu@ti.com>, Jonathan Liu <net147@gmail.com>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Maxime Ripard <maxime.ripard@free-electrons.com>,
        Chen-Yu Tsai <wens@csie.org>, linux-usb@vger.kernel.org,
        linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
        linux-kernel <linux-kernel@vger.kernel.org>,
        linux-sunxi <linux-sunxi@googlegroups.com>
References: <20171010024525.21971-1-net147@gmail.com>
 <20171010032252.GA25830@uda0271908>
 <CANwerB2qnWXDi_wkxk9EZ0WeAunUjzVOBepEOXXnsm0PiByHMg@mail.gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Disposition: inline
In-Reply-To: <CANwerB2qnWXDi_wkxk9EZ0WeAunUjzVOBepEOXXnsm0PiByHMg@mail.gmail.com>
User-Agent: Mutt/1.5.21 (2010-09-15)
X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

On Mon, Oct 16, 2017 at 04:13:51PM +1100, Jonathan Liu wrote:
> On 10 October 2017 at 14:22, Bin Liu <b-liu@ti.com> wrote:
> > On Tue, Oct 10, 2017 at 01:45:25PM +1100, Jonathan Liu wrote:
> >> 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.
> >>
> >> Cc: stable@vger.kernel.org # v4.3+
> >> Signed-off-by: Jonathan Liu <net147@gmail.com>
> >> ---
> >> Changes for v2:
> >>  - Use devm_usb_put_phy instead of usb_put_phy
> >>
> >>  drivers/usb/musb/sunxi.c | 2 ++
> >>  1 file changed, 2 insertions(+)
> >>
> >> diff --git a/drivers/usb/musb/sunxi.c b/drivers/usb/musb/sunxi.c
> >> index c9a09b5bb6e5..dc353e24d53c 100644
> >> --- a/drivers/usb/musb/sunxi.c
> >> +++ b/drivers/usb/musb/sunxi.c
> >> @@ -297,6 +297,8 @@ static int sunxi_musb_exit(struct musb *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;
> >>  }
> >
> >
> 
> > Applied. Thanks.
> > -Bin.
> 
> Which repository was it applied to?

I don't have a public repo (yet), but the patch has been sent to Greg,
so it should be merged into the next -rc.

Regards,
-Bin.