On Fri, Nov 15, 2013 at 09:45:03AM +0000, Wei Yongjun wrote:
> From: Wei Yongjun <[email protected]>
> 
> The dereference should be moved below the NULL test.
> 
> Signed-off-by: Wei Yongjun <[email protected]>
> ---
>  drivers/iommu/arm-smmu.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c
> index 2349d62..a0cc0a5 100644
> --- a/drivers/iommu/arm-smmu.c
> +++ b/drivers/iommu/arm-smmu.c
> @@ -1420,9 +1420,8 @@ static int arm_smmu_map(struct iommu_domain *domain, 
> unsigned long iova,
>                       phys_addr_t paddr, size_t size, int flags)
>  {
>       struct arm_smmu_domain *smmu_domain = domain->priv;
> -     struct arm_smmu_device *smmu = smmu_domain->leaf_smmu;
>  
> -     if (!smmu_domain || !smmu)
> +     if (!smmu_domain || !smmu_domain->leaf_smmu)
>               return -ENODEV;
>  
>       /* Check for silent address truncation up the SMMU chain. */

I already have a patch for this, but actually, we can remove that check
altogether. I'll fix it in my tree.

Will
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