linux-kernel - Re: [PATCH 3/6] drm/bridge: extract some Analogix I2C DP common code

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Date:   Thu, 23 May 2019 15:40:25 +0800
From:   Chen-Yu Tsai <wens@...e.org>
To:     Torsten Duwe <duwe@....de>
Cc:     Maxime Ripard <maxime.ripard@...tlin.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Thierry Reding <thierry.reding@...il.com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Andrzej Hajda <a.hajda@...sung.com>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Icenowy Zheng <icenowy@...c.io>,
        Sean Paul <seanpaul@...omium.org>,
        Vasily Khoruzhick <anarsoul@...il.com>,
        Harald Geyer <harald@...ib.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        devicetree <devicetree@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 3/6] drm/bridge: extract some Analogix I2C DP common code

On Thu, May 23, 2019 at 2:54 PM Torsten Duwe <duwe@....de> wrote:
>
> From: Icenowy Zheng <icenowy@...c.io>
>
> Some code can be shared within different DP bridges by Analogix.
>
> Extract them to a new module.
>
> Signed-off-by: Icenowy Zheng <icenowy@...c.io>
> Signed-off-by: Vasily Khoruzhick <anarsoul@...il.com>
> Signed-off-by: Torsten Duwe <duwe@...e.de>
> ---
>  drivers/gpu/drm/bridge/analogix/Kconfig            |   4 +
>  drivers/gpu/drm/bridge/analogix/Makefile           |   2 +
>  drivers/gpu/drm/bridge/analogix/analogix-anx78xx.c | 146 +-----------------
>  .../gpu/drm/bridge/analogix/analogix-i2c-dptx.c    | 169 +++++++++++++++++++++
>  .../gpu/drm/bridge/analogix/analogix-i2c-dptx.h    |   2 +
>  5 files changed, 178 insertions(+), 145 deletions(-)
>  create mode 100644 drivers/gpu/drm/bridge/analogix/analogix-i2c-dptx.c
>

...

>  static int anx78xx_set_hpd(struct anx78xx *anx78xx)
> diff --git a/drivers/gpu/drm/bridge/analogix/analogix-i2c-dptx.c b/drivers/gpu/drm/bridge/analogix/analogix-i2c-dptx.c
> new file mode 100644
> index 000000000000..9cb30962032e
> --- /dev/null
> +++ b/drivers/gpu/drm/bridge/analogix/analogix-i2c-dptx.c
> @@ -0,0 +1,169 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright(c) 2017 Icenowy Zheng <icenowy@...c.io>
> + *
> + * Based on analogix-anx78xx.c, which is:
> + *   Copyright(c) 2016, Analogix Semiconductor. All rights reserved.

If this was simple code movement, then the original copyright still applies.
A different copyright notice should not be used. I suppose the same applies
to the module author.

ChenYu