linux-kernel - Re: [PATCH v2] usb: musb: sunxi: Explicitly release USB PHY on exit

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Date:   Mon, 16 Oct 2017 16:13:51 +1100
From:   Jonathan Liu <net147@...il.com>
To:     Bin Liu <b-liu@...com>, Jonathan Liu <net147@...il.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Maxime Ripard <maxime.ripard@...e-electrons.com>,
        Chen-Yu Tsai <wens@...e.org>, linux-usb@...r.kernel.org,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        linux-sunxi <linux-sunxi@...glegroups.com>
Subject: Re: [PATCH v2] usb: musb: sunxi: Explicitly release USB PHY on exit

On 10 October 2017 at 14:22, Bin Liu <b-liu@...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@...r.kernel.org # v4.3+
>> Signed-off-by: Jonathan Liu <net147@...il.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?

Regards,
Jonathan