linux-kernel - Re: [PATCH] drm/i915: use IOMEM_ERR

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Date:   Mon, 02 May 2022 11:30:06 +0300
From:   Jani Nikula <jani.nikula@...ux.intel.com>
To:     Kefeng Wang <wangkefeng.wang@...wei.com>,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        Tvrtko Ursulin <tvrtko.ursulin@...ux.intel.com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>
Cc:     intel-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org,
        Kefeng Wang <wangkefeng.wang@...wei.com>
Subject: Re: [PATCH] drm/i915: use IOMEM_ERR_PTR() directly

On Mon, 02 May 2022, Kefeng Wang <wangkefeng.wang@...wei.com> wrote:
> Use IOMEM_ERR_PTR() instead of self defined IO_ERR_PTR().
>
> Signed-off-by: Kefeng Wang <wangkefeng.wang@...wei.com>

Reviewed-by: Jani Nikula <jani.nikula@...el.com>

> ---
>  drivers/gpu/drm/i915/i915_vma.c | 4 ++--
>  drivers/gpu/drm/i915/i915_vma.h | 1 -
>  2 files changed, 2 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_vma.c b/drivers/gpu/drm/i915/i915_vma.c
> index 94fcdb7bd21d..639605c89b7b 100644
> --- a/drivers/gpu/drm/i915/i915_vma.c
> +++ b/drivers/gpu/drm/i915/i915_vma.c
> @@ -541,7 +541,7 @@ void __iomem *i915_vma_pin_iomap(struct i915_vma *vma)
>  	int err;
>  
>  	if (WARN_ON_ONCE(vma->obj->flags & I915_BO_ALLOC_GPU_ONLY))
> -		return IO_ERR_PTR(-EINVAL);
> +		return IOMEM_ERR_PTR(-EINVAL);
>  
>  	if (!i915_gem_object_is_lmem(vma->obj)) {
>  		if (GEM_WARN_ON(!i915_vma_is_map_and_fenceable(vma))) {
> @@ -594,7 +594,7 @@ void __iomem *i915_vma_pin_iomap(struct i915_vma *vma)
>  err_unpin:
>  	__i915_vma_unpin(vma);
>  err:
> -	return IO_ERR_PTR(err);
> +	return IOMEM_ERR_PTR(err);
>  }
>  
>  void i915_vma_flush_writes(struct i915_vma *vma)
> diff --git a/drivers/gpu/drm/i915/i915_vma.h b/drivers/gpu/drm/i915/i915_vma.h
> index 67ae7341c7e0..8e74972fdca3 100644
> --- a/drivers/gpu/drm/i915/i915_vma.h
> +++ b/drivers/gpu/drm/i915/i915_vma.h
> @@ -331,7 +331,6 @@ static inline bool i915_node_color_differs(const struct drm_mm_node *node,
>   * Returns a valid iomapped pointer or ERR_PTR.
>   */
>  void __iomem *i915_vma_pin_iomap(struct i915_vma *vma);
> -#define IO_ERR_PTR(x) ((void __iomem *)ERR_PTR(x))
>  
>  /**
>   * i915_vma_unpin_iomap - unpins the mapping returned from i915_vma_iomap

-- 
Jani Nikula, Intel Open Source Graphics Center