linux-kernel - Re: [PATCH v5 02/23] of: device: Export of_device_{get_modalias, uvent

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Date:   Thu, 10 Nov 2016 15:42:12 -0600
From:   Rob Herring <robh@...nel.org>
To:     Chen-Yu Tsai <wens@...e.org>
Cc:     Peter Chen <hzpeterchen@...il.com>,
        Stephen Boyd <stephen.boyd@...aro.org>,
        Greg KH <gregkh@...uxfoundation.org>,
        Arnd Bergmann <arnd@...db.de>,
        Neil Armstrong <narmstrong@...libre.com>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        linux-usb <linux-usb@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Peter Chen <peter.chen@....com>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        Andy Gross <andy.gross@...aro.org>,
        devicetree <devicetree@...r.kernel.org>,
        Felipe Balbi <balbi@...nel.org>
Subject: Re: [PATCH v5 02/23] of: device: Export of_device_{get_modalias,
 uvent_modalias} to modules

On Sun, Nov 6, 2016 at 7:56 PM, Chen-Yu Tsai <wens@...e.org> wrote:
> On Mon, Nov 7, 2016 at 9:29 AM, Peter Chen <hzpeterchen@...il.com> wrote:
>> On Fri, Nov 04, 2016 at 01:51:34PM -0700, Stephen Boyd wrote:
>>> Quoting Peter Chen (2016-10-24 18:16:32)
>>> > On Mon, Oct 24, 2016 at 12:48:24PM -0700, Stephen Boyd wrote:
>>> > > Quoting Chen-Yu Tsai (2016-10-24 05:19:05)
>>> > > > Hi,
>>> > > >
>>> > > > On Tue, Oct 18, 2016 at 9:56 AM, Stephen Boyd <stephen.boyd@...aro.org> wrote:
>>> > > > > The ULPI bus can be built as a module, and it will soon be
>>> > > > > calling these functions when it supports probing devices from DT.
>>> > > > > Export them so they can be used by the ULPI module.
>>> > > > >
>>> > > > > Acked-by: Rob Herring <robh@...nel.org>
>>> > > > > Cc: <devicetree@...r.kernel.org>
>>> > > > > Signed-off-by: Stephen Boyd <stephen.boyd@...aro.org>
>>> > > > > ---
>>> > > > >  drivers/of/device.c | 2 ++
>>> > > > >  1 file changed, 2 insertions(+)
>>> > > > >
>>> > > > > diff --git a/drivers/of/device.c b/drivers/of/device.c
>>> > > > > index 8a22a253a830..6719ab35b62e 100644
>>> > > > > --- a/drivers/of/device.c
>>> > > > > +++ b/drivers/of/device.c
>>> > > > > @@ -225,6 +225,7 @@ ssize_t of_device_get_modalias(struct device *dev, char *str, ssize_t len)
>>> > > > >
>>> > > > >         return tsize;
>>> > > > >  }
>>> > > > > +EXPORT_SYMBOL_GPL(of_device_get_modalias);
>>> > > > >
>>> > > > >  int of_device_request_module(struct device *dev)
>>> > > > >  {
>>> > > > > @@ -290,6 +291,7 @@ void of_device_uevent(struct device *dev, struct kobj_uevent_env *env)
>>> > > > >         }
>>> > > > >         mutex_unlock(&of_mutex);
>>> > > > >  }
>>> > > > > +EXPORT_SYMBOL_GPL(of_device_uevent_modalias);
>>> > > >
>>> > > > This is trailing the wrong function.
>>> > > >
>>> > >
>>> > > Good catch. Must have been some bad rebase.
>>> > >
>>> > > Peter, can you fix it while applying or should I resend this patch?
>>> > >
>>> >
>>> > But, this is device tree patch. I can only get chipidea part and other
>>> > USB patches if Greg agrees.
>>> >
>>>
>>> Were you expecting Rob to take the drivers/of/* patches? Sorry I thought
>>> Rob acked them so they could go through usb with the other changes.
>>
>> I am just worried about possible merge error when linus pulls both OF
>> and USB tree. Greg, is it ok the OF patches through USB tree with OF
>> maintainer's ack?
>
> May I suggest putting the OF patches on an immutable branch so other
> subsystems can pull them in without pulling in the USB patches? At
> least I want to use them in the I2C subsystem, and in the sunxi-rsb
> driver.

Do you have patches using this already. If not, it is starting to get
a bit late for v4.10.

I can apply this, but then you'll just be pulling in other DT patches.

Rob