Re: [PATCH v7 04/11] drm/i915: Add teardown path in intel_vgt_ballon()

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Patch title s/ballon/balloon/.

On ti, 2016-06-07 at 11:18 -0400, Zhi Wang wrote:
> This function needs to be changed to have a proper goto teardown path.
> Destructors/fini functions are only expected to be called after a
> successful initialization, so calling it at random phase in init function
> is bad. (Joonas)
> 

Cc: and Suggested-by: help to track where the patch appeared from.

> Signed-off-by: Zhi Wang <zhi.a.wang@xxxxxxxxx>
> ---
>  drivers/gpu/drm/i915/i915_vgpu.c | 7 +++++--
>  1 file changed, 5 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/i915_vgpu.c b/drivers/gpu/drm/i915/i915_vgpu.c
> index c9800d4..d41a29e 100644
> --- a/drivers/gpu/drm/i915/i915_vgpu.c
> +++ b/drivers/gpu/drm/i915/i915_vgpu.c
> @@ -187,7 +187,7 @@ int intel_vgt_balloon(struct drm_i915_private *dev_priv)
>  
>  	unsigned long mappable_base, mappable_size, mappable_end;
>  	unsigned long unmappable_base, unmappable_size, unmappable_end;
> -	int ret;
> +	int ret, i;
>  
>  	if (!intel_vgpu_active(dev_priv))
>  		return 0;
> @@ -263,6 +263,9 @@ int intel_vgt_balloon(struct drm_i915_private *dev_priv)
>  
>  err:
>  	DRM_ERROR("VGT balloon fail\n");
> -	intel_vgt_deballoon(dev_priv);
> +	for (i = 0; i < ARRAY_SIZE(bl_info.space); i++) {
> +		if (bl_info.space[i].allocated)
> +			drm_mm_remove_node(&bl_info.space[i]);
> +	}

Maybe add a counterpart vgt_deballoon_space for vgt_balloon_space and
use it in intel_vgt_deballoon and here. That way the code will be more
readable.

Regards, Joonas

>  	return ret;
>  }
-- 
Joonas Lahtinen
Open Source Technology Center
Intel Corporation
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