linux-kernel - Re: [PATCH 11/16] fpga: intel: fme: add partial reconfiguration sub feature support

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Message-ID: <CANk1AXSbyaLpvqn5AnaDPR7KuHohgNdktcA+wqwOT5hO_P4JEw@mail.gmail.com>
Date:   Mon, 3 Apr 2017 15:26:14 -0500
From:   Alan Tull <atull@...nel.org>
To:     Wu Hao <hao.wu@...el.com>
Cc:     Moritz Fischer <moritz.fischer@...us.com>,
        linux-fpga@...r.kernel.org,
        linux-kernel <linux-kernel@...r.kernel.org>,
        luwei.kang@...el.com, yi.z.zhang@...el.com,
        Tim Whisonant <tim.whisonant@...el.com>,
        Enno Luebbers <enno.luebbers@...el.com>,
        Shiva Rao <shiva.rao@...el.com>,
        Christopher Rauer <christopher.rauer@...el.com>,
        Xiao Guangrong <guangrong.xiao@...ux.intel.com>,
        xiaoguangrong.eric@...il.com
Subject: Re: [PATCH 11/16] fpga: intel: fme: add partial reconfiguration sub
 feature support

On Fri, Mar 31, 2017 at 3:50 AM, Wu Hao <hao.wu@...el.com> wrote:
> On Fri, Mar 31, 2017 at 12:11:12PM +0800, Xiao Guangrong wrote:
>> On 31/03/2017 4:30 AM, Alan Tull wrote:
>> >On Thu, Mar 30, 2017 at 7:08 AM, Wu Hao <hao.wu@...el.com> wrote:
>> >>From: Kang Luwei <luwei.kang@...el.com>
>> >>
>> >>Partial Reconfiguration (PR) is the most important function for FME. It
>> >>allows reconfiguration for given Port/Accelerated Function Unit (AFU).
>> >>
>> >>This patch adds support for PR sub feature. In this patch, it registers
>> >>a fpga_mgr and implements fpga_manager_ops, and invoke fpga_mgr_buf_load
>> >>for PR operation once PR request received via ioctl. Below user space
>> >>interfaces are exposed by this sub feature.
>> >>
>> >>Sysfs interface:
>> >>* /sys/class/fpga/<fpga.x>/<intel-fpga-fme.x>/interface_id
>> >>  Read-only. Indicate the hardware interface information. Userspace
>> >>  applications need to check this interface to select correct green
>> >>  bitstream format before PR.
>> >>
>> >>Ioctl interface:
>> >>* FPGA_FME_PORT_PR
>> >>  Do partial reconfiguration per information from userspace, including
>> >>  target port(AFU), buffer size and address info. It returns the PR status
>> >>  (PR error code if failed) to userspace.
>> >>
>> >>Signed-off-by: Tim Whisonant <tim.whisonant@...el.com>
>> >>Signed-off-by: Enno Luebbers <enno.luebbers@...el.com>
>> >>Signed-off-by: Shiva Rao <shiva.rao@...el.com>
>> >>Signed-off-by: Christopher Rauer <christopher.rauer@...el.com>
>> >>Signed-off-by: Alan Tull <alan.tull@...el.com>
>> >
>> >Hi Wu Hao,
>> >
>> >Thanks for submitting your patches.
>> >
>> >I think there's been a misunderstanding of the meaning of
>> >'Signed-off-by' [1].  I have not signed off on this code or had a hand
>> >in its development.  But I'm happy to get to review it now.  It will
>> >take a bit of time; I expect to be replying next week.
>>
>> Hi Alan,
>>
>> Sorry to confuse you, i think it's because you helped Chris a lot to
>> implement this interface and we'd like to include your credit as this
>> way. If you dislike, it will be dropped. :)
>>
>> Thanks for your review in advance.
>>
>
> Hi Alan,
>
> Sorry about this, we should ask you firstly before doing it this way.
> Let me know if you don't like it, I will drop it in the next version.

Yes please drop the signed-off-by: me in the next version.  Also, you
don't need to cc my Intel email address.

Alan

>
> Many thanks for your time and review on these patches. Look forward
> for your feedback and comments. :)
>
> Thanks
> Hao