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 for <linuxppc-dev@lists.ozlabs.org> from <tyreld@linux.vnet.ibm.com>;
 Tue, 28 Aug 2018 18:14:08 -0400
Subject: Re: [PATCH] soc: Convert to using %pOFn instead of device_node.name
To: Li Yang <leoyang.li@nxp.com>, Rob Herring <robh@kernel.org>
Cc: Heiko Stuebner <heiko@sntech.de>, linux-soc@vger.kernel.org,
 lkml <linux-kernel@vger.kernel.org>, Jon Hunter <jonathanh@nvidia.com>,
 david.brown@linaro.org, thierry.reding@gmail.com,
 Santosh Shilimkar <ssantosh@kernel.org>, andy.gross@linaro.org,
 linuxppc-dev <linuxppc-dev@lists.ozlabs.org>,
 "moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE"
 <linux-arm-kernel@lists.infradead.org>, Zhao Qiang <qiang.zhao@nxp.com>
References: <20180828015252.28511-1-robh@kernel.org>
 <20180828015252.28511-43-robh@kernel.org>
 <CADRPPNRvRKEuV=ZzH6yq6_7COvFSWy2ibAKoEt4YrzES2m9x2Q@mail.gmail.com>
From: Tyrel Datwyler <tyreld@linux.vnet.ibm.com>
Date: Tue, 28 Aug 2018 15:14:00 -0700
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On 08/28/2018 11:48 AM, Li Yang wrote:
> On Mon, Aug 27, 2018 at 8:57 PM Rob Herring <robh@kernel.org> wrote:
>>
>> In preparation to remove the node name pointer from struct device_node,
>> convert printf users to use the %pOFn format specifier.
> 
> Please forgive my ignorance, but what is this format specifier do
> exactly?   I cannot find anything listed in the printf specification
> matching this.  Is this something newly introduced?
> 
> Leo
> 

>>From Documentation/core-api/printk-formats.rst:

kobjects
--------

::

        %pOF[fnpPcCF]


For printing kobject based structs (device nodes). Default behaviour is
equivalent to %pOFf.

        - f - device node full_name
        - n - device node name
        - p - device node phandle
        - P - device node path spec (name + @unit)
        - F - device node flags
        - c - major compatible string
        - C - full compatible string


-Tyrel