linux-kernel - Re: [PATCH] drm/i915/display: Include debugfs.h in intel_display_debugfs

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Date: Thu, 01 Feb 2024 11:22:16 +0200
From: Jani Nikula <jani.nikula@...el.com>
To: Paz Zcharya <pazz@...omium.org>, Jouni Högander
 <jouni.hogander@...el.com>, Luca Coelho <luciano.coelho@...el.com>
Cc: Subrata Banik <subratabanik@...gle.com>, Manasi Navare
 <navaremanasi@...omium.org>, Drew Davenport <ddavenport@...omium.org>,
 Sean Paul <seanpaul@...omium.org>, Marcin Wojtas <mwojtas@...omium.org>,
 khaled.almahallawy@...el.com, intel-gfx@...ts.freedesktop.org,
 linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org, Paz Zcharya
 <pazz@...omium.org>
Subject: Re: [PATCH] drm/i915/display: Include debugfs.h in
 intel_display_debugfs_params.c

On Wed, 31 Jan 2024, Paz Zcharya <pazz@...omium.org> wrote:
> Commit 8015bee0bfec ("drm/i915/display: Add framework to add parameters
> specific to display") added the file intel_display_debugfs_params.c,
> which calls the functions "debugfs_create_{bool, ulong, str}" -- all of
> which are defined in <linux/debugfs.h>. The missing inclusion of this
> header file is breaking the ChromeOS build -- add an explicit include
> to fix that.
>

Thanks for the patch, apparently in our configs some paths lead to
debugfs.h. Just goes on to show how interdependent the kernel headers
are.

Out of curiousity, what value do you have for CONFIG_DEBUG_FS kconfig?

Fixes: 8015bee0bfec ("drm/i915/display: Add framework to add parameters specific to display")
Reviewed-by: Jani Nikula <jani.nikula@...el.com>

BR,
Jani.


> Signed-off-by: Paz Zcharya <pazz@...omium.org>
> ---
>  drivers/gpu/drm/i915/display/intel_display_debugfs_params.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_display_debugfs_params.c b/drivers/gpu/drm/i915/display/intel_display_debugfs_params.c
> index b7e68eb62452..f35718748555 100644
> --- a/drivers/gpu/drm/i915/display/intel_display_debugfs_params.c
> +++ b/drivers/gpu/drm/i915/display/intel_display_debugfs_params.c
> @@ -3,6 +3,7 @@
>   * Copyright © 2023 Intel Corporation
>   */
>  
> +#include <linux/debugfs.h>
>  #include <linux/kernel.h>
>  
>  #include <drm/drm_drv.h>

-- 
Jani Nikula, Intel