Subject: Re: build failure of next-20220830 due to 5f8cdece42ff ("drm/msm/dsi: switch to DRM_PANEL_BRIDGE")

From: Nathan Chancellor <[email-masked]>
Date: Tue, 30 Aug 2022 05:40:34 -0700

Hi Sudip,

On Tue, Aug 30, 2022 at 10:18:43AM +0100, Sudip Mukherjee (Codethink) wrote:
> Hi All,
> 
> The builds of arm64 allmodconfig with clang have failed to build
> next-20220830 with the error:
> 
> drivers/gpu/drm/msm/dsi/dsi_host.c:1903:14: error: variable 'device_node' is uninitialized when used here [-Werror,-Wuninitialized]
>         of_node_put(device_node);
>                     ^~~~~~~~~~~
> drivers/gpu/drm/msm/dsi/dsi_host.c:1870:44: note: initialize the variable 'device_node' to silence this warning
>         struct device_node *endpoint, *device_node;
>                                                   ^
>                                                    = NULL
> 
> git bisect pointed to 5f8cdece42ff ("drm/msm/dsi: switch to DRM_PANEL_BRIDGE")
> 
> I will be happy to test any patch or provide any extra log if needed.

Thanks for the report. I noticed this yesterday and sent a patch:

https://lore.kernel.org/[email-masked]/
https://github.com/ClangBuiltLinux/linux/issues/1700

Cheers,
Nathan