linux-kernel - RE: [PATCH 2/2] drm/msm/gpu: fix building without debugfs

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Message-ID: <VI1PR0402MB2800858E1E94968F584E6CE8E08A0@VI1PR0402MB2800.eurprd04.prod.outlook.com>
Date:   Tue, 8 Jan 2019 14:16:34 +0000
From:   Ioana Ciornei <ioana.ciornei@....com>
To:     Arnd Bergmann <arnd@...db.de>, Rob Clark <robdclark@...il.com>,
        David Airlie <airlied@...ux.ie>
CC:     Jordan Crouse <jcrouse@...eaurora.org>,
        "linux-arm-msm@...r.kernel.org" <linux-arm-msm@...r.kernel.org>,
        "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
        "freedreno@...ts.freedesktop.org" <freedreno@...ts.freedesktop.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH 2/2] drm/msm/gpu: fix building without debugfs


> Subject: [PATCH 2/2] drm/msm/gpu: fix building without debugfs
> 
> When debugfs is disabled, but coredump is turned on, the adreno driver fails to
> build:
> 
> drivers/gpu/drm/msm/adreno/a3xx_gpu.c:460:4: error: 'struct msm_gpu_funcs'
> has no member named 'show'
>    .show = adreno_show,
>     ^~~~
> drivers/gpu/drm/msm/adreno/a3xx_gpu.c:460:11: note: (near initialization for
> 'funcs.base')
> drivers/gpu/drm/msm/adreno/a3xx_gpu.c:460:11: error: initialization of 'void
> (*)(struct msm_gpu *, struct msm_gem_submit *, struct msm_file_private *)'
> from incompatible pointer type 'void (*)(struct msm_gpu *, struct
> msm_gpu_state *, struct drm_printer *)' [-Werror=incompatible-pointer-types]
> drivers/gpu/drm/msm/adreno/a3xx_gpu.c:460:11: note: (near initialization for
> 'funcs.base.submit')
> drivers/gpu/drm/msm/adreno/a4xx_gpu.c:546:4: error: 'struct msm_gpu_funcs'
> has no member named 'show'
> drivers/gpu/drm/msm/adreno/a5xx_gpu.c:1460:4: error: 'struct
> msm_gpu_funcs' has no member named 'show'
> drivers/gpu/drm/msm/adreno/a6xx_gpu.c:769:4: error: 'struct msm_gpu_funcs'
> has no member named 'show'
> drivers/gpu/drm/msm/msm_gpu.c: In function 'msm_gpu_devcoredump_read':
> drivers/gpu/drm/msm/msm_gpu.c:289:12: error: 'const struct msm_gpu_funcs'
> has no member named 'show'
> 
> Adjust the #ifdef to make it build again.

Was this patch picked up by someone? I am asking this since the compile error can be still seen in 5.0-rc1.

Ioana

> 
> Fixes: c0fec7f562ec ("drm/msm/gpu: Capture the GPU state on a GPU hang")
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> ---
> Not sure if this does the right thing, but it does fix the build regression
> ---
>  drivers/gpu/drm/msm/msm_gpu.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/msm/msm_gpu.h
> b/drivers/gpu/drm/msm/msm_gpu.h
> index 9122ee6e55e4..1fe93920fb25 100644
> --- a/drivers/gpu/drm/msm/msm_gpu.h
> +++ b/drivers/gpu/drm/msm/msm_gpu.h
> @@ -63,7 +63,7 @@ struct msm_gpu_funcs {
>  	struct msm_ringbuffer *(*active_ring)(struct msm_gpu *gpu);
>  	void (*recover)(struct msm_gpu *gpu);
>  	void (*destroy)(struct msm_gpu *gpu);
> -#ifdef CONFIG_DEBUG_FS
> +#if defined(CONFIG_DEBUG_FS) || defined(CONFIG_DEV_COREDUMP)
>  	/* show GPU status in debugfs: */
>  	void (*show)(struct msm_gpu *gpu, struct msm_gpu_state *state,
>  			struct drm_printer *p);
> --
> 2.18.0