Re: [PATCH 1/8] drm/<ttm-based-drivers>: Don't call drm_mmap

["Christian König" <christian.koenig@amd.com>]

Am 23.09.2014 um 15:46 schrieb Daniel Vetter:
> Really, the legacy buffer api should be dead, especially for all these
> newfangled drivers. I suspect this is copypasta from the transitioning
> days, which probably originated in radeon.
>
> Cc: David Airlie <airlied@linux.ie>
> Cc: Alex Deucher <alexander.deucher@amd.com>
> Cc: "Christian König" <christian.koenig@amd.com>
> Cc: David Herrmann <dh.herrmann@gmail.com>
> Cc: Rashika <rashika.kheria@gmail.com>
> Cc: Josh Triplett <josh@joshtriplett.org>
> Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
> Cc: Fabian Frederick <fabf@skynet.be>
> Cc: Gerd Hoffmann <kraxel@redhat.com>
> Cc: Ben Skeggs <bskeggs@redhat.com>
> Cc: Alexandre Courbot <acourbot@nvidia.com>
> Cc: Maarten Lankhorst <maarten.lankhorst@canonical.com>
> Cc: Christian Engelmayer <cengelma@gmx.at>
> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>

To be honest I always wondered what this stuff is all about, never 
really understood it.

So patch is Acked-by: Christian König <christian.koenig@amd.com>

> ---
>   drivers/gpu/drm/ast/ast_ttm.c         | 2 +-
>   drivers/gpu/drm/bochs/bochs_mm.c      | 2 +-
>   drivers/gpu/drm/cirrus/cirrus_ttm.c   | 2 +-
>   drivers/gpu/drm/mgag200/mgag200_ttm.c | 2 +-
>   drivers/gpu/drm/nouveau/nouveau_ttm.c | 2 +-
>   drivers/gpu/drm/qxl/qxl_ttm.c         | 2 +-
>   drivers/gpu/drm/radeon/radeon_ttm.c   | 2 +-
>   7 files changed, 7 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/gpu/drm/ast/ast_ttm.c b/drivers/gpu/drm/ast/ast_ttm.c
> index 5098c7dd435c..c65d432f42c4 100644
> --- a/drivers/gpu/drm/ast/ast_ttm.c
> +++ b/drivers/gpu/drm/ast/ast_ttm.c
> @@ -427,7 +427,7 @@ int ast_mmap(struct file *filp, struct vm_area_struct *vma)
>   	struct ast_private *ast;
>   
>   	if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET))
> -		return drm_mmap(filp, vma);
> +		return -EINVAL;
>   
>   	file_priv = filp->private_data;
>   	ast = file_priv->minor->dev->dev_private;
> diff --git a/drivers/gpu/drm/bochs/bochs_mm.c b/drivers/gpu/drm/bochs/bochs_mm.c
> index 2af30e7607d7..324f5a09a0a1 100644
> --- a/drivers/gpu/drm/bochs/bochs_mm.c
> +++ b/drivers/gpu/drm/bochs/bochs_mm.c
> @@ -339,7 +339,7 @@ int bochs_mmap(struct file *filp, struct vm_area_struct *vma)
>   	struct bochs_device *bochs;
>   
>   	if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET))
> -		return drm_mmap(filp, vma);
> +		return -EINVAL;
>   
>   	file_priv = filp->private_data;
>   	bochs = file_priv->minor->dev->dev_private;
> diff --git a/drivers/gpu/drm/cirrus/cirrus_ttm.c b/drivers/gpu/drm/cirrus/cirrus_ttm.c
> index 3e7d758330a9..d3c615f9b183 100644
> --- a/drivers/gpu/drm/cirrus/cirrus_ttm.c
> +++ b/drivers/gpu/drm/cirrus/cirrus_ttm.c
> @@ -411,7 +411,7 @@ int cirrus_mmap(struct file *filp, struct vm_area_struct *vma)
>   	struct cirrus_device *cirrus;
>   
>   	if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET))
> -		return drm_mmap(filp, vma);
> +		return -EINVAL;
>   
>   	file_priv = filp->private_data;
>   	cirrus = file_priv->minor->dev->dev_private;
> diff --git a/drivers/gpu/drm/mgag200/mgag200_ttm.c b/drivers/gpu/drm/mgag200/mgag200_ttm.c
> index be883ef5a1d3..8ac70626df6c 100644
> --- a/drivers/gpu/drm/mgag200/mgag200_ttm.c
> +++ b/drivers/gpu/drm/mgag200/mgag200_ttm.c
> @@ -428,7 +428,7 @@ int mgag200_mmap(struct file *filp, struct vm_area_struct *vma)
>   	struct mga_device *mdev;
>   
>   	if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET))
> -		return drm_mmap(filp, vma);
> +		return -EINVAL;
>   
>   	file_priv = filp->private_data;
>   	mdev = file_priv->minor->dev->dev_private;
> diff --git a/drivers/gpu/drm/nouveau/nouveau_ttm.c b/drivers/gpu/drm/nouveau/nouveau_ttm.c
> index e81d086577ce..753a6def61e7 100644
> --- a/drivers/gpu/drm/nouveau/nouveau_ttm.c
> +++ b/drivers/gpu/drm/nouveau/nouveau_ttm.c
> @@ -281,7 +281,7 @@ nouveau_ttm_mmap(struct file *filp, struct vm_area_struct *vma)
>   	struct nouveau_drm *drm = nouveau_drm(file_priv->minor->dev);
>   
>   	if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET))
> -		return drm_mmap(filp, vma);
> +		return -EINVAL;
>   
>   	return ttm_bo_mmap(filp, vma, &drm->ttm.bdev);
>   }
> diff --git a/drivers/gpu/drm/qxl/qxl_ttm.c b/drivers/gpu/drm/qxl/qxl_ttm.c
> index abe945a04fd4..0cbc4c987164 100644
> --- a/drivers/gpu/drm/qxl/qxl_ttm.c
> +++ b/drivers/gpu/drm/qxl/qxl_ttm.c
> @@ -127,7 +127,7 @@ int qxl_mmap(struct file *filp, struct vm_area_struct *vma)
>   	if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET)) {
>   		pr_info("%s: vma->vm_pgoff (%ld) < DRM_FILE_PAGE_OFFSET\n",
>   			__func__, vma->vm_pgoff);
> -		return drm_mmap(filp, vma);
> +		return -EINVAL;
>   	}
>   
>   	file_priv = filp->private_data;
> diff --git a/drivers/gpu/drm/radeon/radeon_ttm.c b/drivers/gpu/drm/radeon/radeon_ttm.c
> index eca2ce60d440..902a3e8af79b 100644
> --- a/drivers/gpu/drm/radeon/radeon_ttm.c
> +++ b/drivers/gpu/drm/radeon/radeon_ttm.c
> @@ -956,7 +956,7 @@ int radeon_mmap(struct file *filp, struct vm_area_struct *vma)
>   	int r;
>   
>   	if (unlikely(vma->vm_pgoff < DRM_FILE_PAGE_OFFSET)) {
> -		return drm_mmap(filp, vma);
> +		return -EINVAL;
>   	}
>   
>   	file_priv = filp->private_data;

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