linux-kernel - Re: [PATCH] dma-buf: really enable DMABUF

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Message-ID: <74b416f0-5bc4-40a3-93c2-ed5c5d2b56b0@amd.com>
Date: Wed, 17 Dec 2025 11:55:26 +0100
From: Christian König <christian.koenig@....com>
To: Lukas Bulwahn <lbulwahn@...hat.com>,
 Sumit Semwal <sumit.semwal@...aro.org>,
 "Michael J . Ruhl" <michael.j.ruhl@...el.com>, linux-media@...r.kernel.org,
 dri-devel@...ts.freedesktop.org, linaro-mm-sig@...ts.linaro.org
Cc: kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org,
 Lukas Bulwahn <lukas.bulwahn@...hat.com>
Subject: Re: [PATCH] dma-buf: really enable DMABUF_DEBUG by default on DEBUG
 kernels

On 12/17/25 11:25, Lukas Bulwahn wrote:
> From: Lukas Bulwahn <lukas.bulwahn@...hat.com>
> 
> The intent of commit 646013f513f3 ("dma-buf: enable DMABUF_DEBUG by default
> on DEBUG kernels") is clear, but it mixes up the config option name. The
> config option for kernel debugging is named DEBUG_KERNEL, not DEBUG.
> 
> Fix up the DMABUF_DEBUG definition to use the intended name.
> 
> Fixes: 646013f513f3 ("dma-buf: enable DMABUF_DEBUG by default on DEBUG kernels")
> Signed-off-by: Lukas Bulwahn <lukas.bulwahn@...hat.com>

Ah, yeah. I mixed up the C define vs the config option. Thanks for pointing that out.

Reviewed-by: Christian König <christian.koenig@....com>

> ---
>  drivers/dma-buf/Kconfig | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/dma-buf/Kconfig b/drivers/dma-buf/Kconfig
> index fdd823e446cc..426c9ad3364f 100644
> --- a/drivers/dma-buf/Kconfig
> +++ b/drivers/dma-buf/Kconfig
> @@ -55,7 +55,7 @@ config DMABUF_MOVE_NOTIFY
>  config DMABUF_DEBUG
>  	bool "DMA-BUF debug checks"
>  	depends on DMA_SHARED_BUFFER
> -	default y if DEBUG
> +	default y if DEBUG_KERNEL
>  	help
>  	  This option enables additional checks for DMA-BUF importers and
>  	  exporters. Specifically it validates that importers do not peek at the