linux-kernel - Re: [PATCH] drm/msm/dsi: Remove use of device_node in dsi_host_parse

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Message-ID: <d43b3936-dbc0-dbca-96de-449cec1fc024@linaro.org>
Date:   Tue, 30 Aug 2022 23:42:22 +0300
From:   Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To:     Nathan Chancellor <nathan@...nel.org>,
        Rob Clark <robdclark@...il.com>,
        Abhinav Kumar <quic_abhinavk@...cinc.com>
Cc:     Sean Paul <sean@...rly.run>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Tom Rix <trix@...hat.com>, linux-arm-msm@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, freedreno@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org, llvm@...ts.linux.dev,
        patches@...ts.linux.dev
Subject: Re: [PATCH] drm/msm/dsi: Remove use of device_node in
 dsi_host_parse_dt()

On 29/08/2022 19:54, Nathan Chancellor wrote:
> Clang warns:
> 
>    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
>    1 error generated.
> 
> device_node's assignment was removed but not all of its uses. Remove the
> call to of_node_put() and the variable declaration to clean up the
> warning.
> 
> Fixes: 5f8cdece42ff ("drm/msm/dsi: switch to DRM_PANEL_BRIDGE")
> Link: https://github.com/ClangBuiltLinux/linux/issues/1700
> Signed-off-by: Nathan Chancellor <nathan@...nel.org>

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>

-- 
With best wishes
Dmitry