linux-kernel - Re: [PATCH v2 2/2] drm/msm: Leave inuse count intact on map failure

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Date:   Wed, 23 Sep 2020 08:51:47 -0600
From:   Jordan Crouse <jcrouse@...eaurora.org>
To:     Akhil P Oommen <akhilpo@...eaurora.org>
Cc:     freedreno@...ts.freedesktop.org, dri-devel@...edesktop.org,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        mka@...omium.org, jonathan@...ek.ca, robdclark@...il.com,
        dianders@...omium.org
Subject: Re: [PATCH v2 2/2] drm/msm: Leave inuse count intact on map failure

On Tue, Sep 22, 2020 at 08:25:27PM +0530, Akhil P Oommen wrote:
> Leave the inuse count intact on map failure to keep the accounting
> accurate.
> 
> Signed-off-by: Akhil P Oommen <akhilpo@...eaurora.org>

Reviewed-by: Jordan Crouse <jcrouse@...eaurora.org>

> ---
>  drivers/gpu/drm/msm/msm_gem_vma.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/msm/msm_gem_vma.c b/drivers/gpu/drm/msm/msm_gem_vma.c
> index 80a8a26..f914ddb 100644
> --- a/drivers/gpu/drm/msm/msm_gem_vma.c
> +++ b/drivers/gpu/drm/msm/msm_gem_vma.c
> @@ -88,8 +88,10 @@ msm_gem_map_vma(struct msm_gem_address_space *aspace,
>  		ret = aspace->mmu->funcs->map(aspace->mmu, vma->iova, sgt,
>  				size, prot);
>  
> -	if (ret)
> +	if (ret) {
>  		vma->mapped = false;
> +		vma->inuse--;
> +	}
>  
>  	return ret;
>  }
> -- 
> 2.7.4
> 

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