linux-kernel - Re: [PATCH 2/3] iommu/omap: Return ERR_PTR in device

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Date:   Wed, 28 Jun 2017 11:32:02 -0500
From:   Suman Anna <s-anna@...com>
To:     Joerg Roedel <joro@...tes.org>, <iommu@...ts.linux-foundation.org>
CC:     <linux-kernel@...r.kernel.org>,
        Gerald Schaefer <gerald.schaefer@...ibm.com>,
        Joerg Roedel <jroedel@...e.de>
Subject: Re: [PATCH 2/3] iommu/omap: Return ERR_PTR in device_group call-back

On 06/28/2017 07:00 AM, Joerg Roedel wrote:
> From: Joerg Roedel <jroedel@...e.de>
> 
> Make sure that the device_group callback returns an ERR_PTR
> instead of NULL.
> 
> Signed-off-by: Joerg Roedel <jroedel@...e.de>

Thanks for the patch,
Acked-by: Suman Anna <s-anna@...com>

regards
Suman

> ---
>  drivers/iommu/omap-iommu.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/iommu/omap-iommu.c b/drivers/iommu/omap-iommu.c
> index 95dfca3..641e035 100644
> --- a/drivers/iommu/omap-iommu.c
> +++ b/drivers/iommu/omap-iommu.c
> @@ -1309,7 +1309,7 @@ static void omap_iommu_remove_device(struct device *dev)
>  static struct iommu_group *omap_iommu_device_group(struct device *dev)
>  {
>  	struct omap_iommu_arch_data *arch_data = dev->archdata.iommu;
> -	struct iommu_group *group = NULL;
> +	struct iommu_group *group = ERR_PTR(-EINVAL);
>  
>  	if (arch_data->iommu_dev)
>  		group = arch_data->iommu_dev->group;
>