[PATCH] drm/amdgpu: check for the existence of RAS dir before creating

[Zhou1, Tao]

[AMD Official Use Only - Internal Distribution Only]

The issue is fixed by:

centralize all debugfs creation in one place for ras

Signed-off-by: Tao Zhou <tao.zhou1 at amd.com>
Signed-off-by: Stanley.Yang <Stanley.Yang at amd.com>
Change-Id: I7489ccb41dcf7a11ecc45313ad42940474999d81

Hi Stanley:

Have you pushed the patch?

Regards,
Tao

> -----Original Message-----
> From: amd-gfx <amd-gfx-bounces at lists.freedesktop.org> On Behalf Of Evan
> Quan
> Sent: 2020年3月10日 13:26
> To: amd-gfx at lists.freedesktop.org
> Cc: Quan, Evan <Evan.Quan at amd.com>; Zhang, Hawking
> <Hawking.Zhang at amd.com>
> Subject: [PATCH] drm/amdgpu: check for the existence of RAS dir before
> creating
> 
> To address the error message below:
> debugfs: Directory 'ras' with parent '/' already present!
> 
> Change-Id: I2539e89fdfe4e22055c3be5a48a8c0adad315f91
> Signed-off-by: Evan Quan <evan.quan at amd.com>
> ---
>  drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
> b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
> index e1e8fd4b2b89..2195f6c63b50 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
> @@ -1075,7 +1075,9 @@ static void
> amdgpu_ras_debugfs_create_ctrl_node(struct amdgpu_device *adev)
>  	struct amdgpu_ras *con = amdgpu_ras_get_context(adev);
>  	struct drm_minor *minor = adev->ddev->primary;
> 
> -	con->dir = debugfs_create_dir("ras", minor->debugfs_root);
> +	con->dir = debugfs_lookup("ras", minor->debugfs_root);
> +	if (!con->dir)
> +		con->dir = debugfs_create_dir("ras", minor->debugfs_root);
>  	debugfs_create_file("ras_ctrl", S_IWUGO | S_IRUGO, con->dir,
>  				adev, &amdgpu_ras_debugfs_ctrl_ops);
>  	debugfs_create_file("ras_eeprom_reset", S_IWUGO | S_IRUGO, con-
> >dir,
> --
> 2.25.1
> 
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