linux-kernel - Re: [PATCH v3 2/2] usb: typec: add support for the nb7vpq904m Type-C Linear Redriver

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Date:   Thu, 15 Jun 2023 11:47:46 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     neil.armstrong@...aro.org
Cc:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        linux-arm-msm@...r.kernel.org, linux-usb@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 2/2] usb: typec: add support for the nb7vpq904m Type-C
 Linear Redriver

On Tue, Jun 13, 2023 at 04:50:08PM +0200, neil.armstrong@...aro.org wrote:
> From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
> 
> Add support for the ON Semiconductor NB7VPQ904M Type-C USB SuperSpeed
> and DisplayPort ALT Mode Linear Redriver chip found on some devices
> with a Type-C port.
> 
> The redriver compensates ultra High-Speeed DisplayPort and USB
> Super Speed signal integrity losses mainly due to PCB & transmission
> cables.
> 
> The redriver doesn't support SuperSpeed lines swapping, but
> can support Type-C SBU lines swapping.
> 
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
> Signed-off-by: Neil Armstrong <neil.armstrong@...aro.org>
> ---
>  drivers/usb/typec/mux/Kconfig      |   8 +
>  drivers/usb/typec/mux/Makefile     |   1 +
>  drivers/usb/typec/mux/nb7vpq904m.c | 529 +++++++++++++++++++++++++++++++++++++
>  3 files changed, 538 insertions(+)

I get the following build error on my system with this applied:

  CC [M]  drivers/usb/typec/mux/nb7vpq904m.o
drivers/usb/typec/mux/nb7vpq904m.c: In function ‘nb7vpq904m_register_bridge’:
drivers/usb/typec/mux/nb7vpq904m.c:327:20: error: ‘struct drm_bridge’ has no member named ‘of_node’
  327 |         nb7->bridge.of_node = nb7->client->dev.of_node;
      |                    ^


What went wrong?

thanks,

greg k-h