linux-kernel - Re: [PATCH v2 2/2] usb: ulpi: Call of_node

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Date:   Thu, 27 Jan 2022 11:25:02 -0500
From:   Sean Anderson <sean.anderson@...o.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 2/2] usb: ulpi: Call of_node_put correctly



On 1/26/22 8:04 AM, Greg Kroah-Hartman wrote:
> On Tue, Jan 25, 2022 at 11:53:58AM -0500, Sean Anderson wrote:
>> Hi Heikki,
>> 
>> On 1/25/22 4:18 AM, Heikki Krogerus wrote:
>> > On Mon, Jan 24, 2022 at 12:33:44PM -0500, Sean Anderson wrote:
>> >> of_node_put should always be called on device nodes gotten from
>> >> of_get_*. Additionally, it should only be called after there are no
>> >> remaining users. To address the first issue, call of_node_put if later
>> >> steps in ulpi_register fail. To address the latter, call of_node_put
>> >> only after calling device_unregister.
>> > 
>> > This looks like a fix, but you don't have the fix tag.
>> 
>> You're right this should have
>> 
>> Fixes: ef6a7bcfb01c ("usb: ulpi: Support device discovery via DT")
> 
> Please resend this as 2 independent patches as they should not depend on
> each other, allowing this one to be backported, but the debugfs addition
> added only to 5.18-rc1.

The patches modify adjacent lines, so one will depend on the other. I
will order this patch first the next time.

--Sean