linux-kernel - Re: [PATCH V7 3/4] drm/bridge: Add driver for GE B850v3 LVDS/DP++ Bridge

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Date:   Fri, 3 Feb 2017 12:25:24 +0000
From:   Emil Velikov <emil.l.velikov@...il.com>
To:     Emil Velikov <emil.l.velikov@...il.com>,
        Peter Senna Tschudin <peter.senna@...labora.co.uk>,
        Mark Rutland <mark.rutland@....com>,
        martyn.welch@...labora.co.uk,
        Peter Senna Tschudin <peter.senna@...il.com>,
        ML dri-devel <dri-devel@...ts.freedesktop.org>,
        "Linux-Kernel@...r. Kernel. Org" <linux-kernel@...r.kernel.org>,
        Yakir Yang <ykk@...k-chips.com>, Jiri Slaby <jslaby@...e.cz>,
        Mauro Carvalho Chehab <mchehab@....samsung.com>,
        Russell King - ARM Linux <linux@...linux.org.uk>,
        Peter Senna Tschudin <peter.senna@...labora.com>,
        javier@...hile0.org, Thierry Reding <treding@...dia.com>,
        Guenter Roeck <linux@...ck-us.net>, martin.donnelly@...com,
        devicetree <devicetree@...r.kernel.org>,
        Pawel Moll <pawel.moll@....com>,
        Ian Campbell <ijc+devicetree@...lion.org.uk>,
        Fabio Estevam <fabio.estevam@....com>,
        Russell King <rmk+kernel@...linux.org.uk>,
        Rob Herring <robh+dt@...nel.org>,
        LAKML <linux-arm-kernel@...ts.infradead.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        tiwai@...e.com, Sascha Hauer <kernel@...gutronix.de>,
        Kumar Gala <galak@...eaurora.org>,
        Enric Balletbo i Serra <enric.balletbo@...labora.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Shawn Guo <shawnguo@...nel.org>,
        "David S. Miller" <davem@...emloft.net>
Subject: Re: [PATCH V7 3/4] drm/bridge: Add driver for GE B850v3 LVDS/DP++ Bridge

On 3 February 2017 at 08:00, Daniel Vetter <daniel@...ll.ch> wrote:
> On Thu, Feb 02, 2017 at 12:37:21PM +0000, Emil Velikov wrote:
>>  - Daniel, gents - is drm-misc aimed at devs with limited (no?)
>> review/commit history in the area and/or the kernel in general ?
>> In this case, Peter have quite noticeable experience [in kernel
>> development] with little-to no in DRM.
>> Should one draw a line in the sand somewhere ?
>
> We're fairly lenient with accepting new drivers already, and for drivers
> in drm-misc we require some checks and peer review to make sure new folks
> learn faster. But it's an expirement, I fully expect some fallout and then
> some learnign and fine tuning from that, and maybe we even need to crank
> requirements back up to a much higher level of experience.
>
> But for drivers I'm honestly not too concerned: As long as there's some
> process in place to foster learning&collaboration (which I think will be
> better with this) I really don't see much harm in merging non-perfect
> driver code.
>
Thank you Daniel, this is very well said. Being lenient to begin with
and adjusting where/if needed is the more welcoming approach, indeed.
Doubt there'll be (m)any cases of (ab|mis)use but even if so, nobody
can see the future.

>>  - You patch has been on a long [bit rocky road] for a while, with
>> devs giving you [what seems like] a partial reviews.
>> Have you considered reviewing others' patches in exchange for a [more
>> complete one] of this one ? According to git log people have poked you
>> a handful of times, but seemingly you were busy.
>
> Just a clarification: When I review drivers I don't do a fairly cursor
> look, hunting for areas where some refactoring and align with drm best
> practices would be good. And I think that's perfectly fine and enough to
> get a driver landed, but we're definitely not 100% consistent on this
> within drm-misc. Probably will take some time to figure this out.
Seems like I've missed "Peter, your patch..." above, silly me.

Thanks for answering my [what may seem silly] questions ;-)
Emil