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Subject[PATCH 5/7] drivers/iommu/tegra-smmu.c: remove invalid reference to list iterator variable
Date
From: Julia Lawall <Julia.Lawall@lip6.fr>

If list_for_each_entry, etc complete a traversal of the list, the iterator
variable ends up pointing to an address at an offset from the list head,
and not a meaningful structure. Thus this value should not be used after
the end of the iterator. Replace c->dev by dev, which is the value that
c->dev has been compared to.

This problem was found using Coccinelle (http://coccinelle.lip6.fr/).

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>

---
drivers/iommu/tegra-smmu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iommu/tegra-smmu.c b/drivers/iommu/tegra-smmu.c
index 3757bb5..d3fbf37 100644
--- a/drivers/iommu/tegra-smmu.c
+++ b/drivers/iommu/tegra-smmu.c
@@ -780,7 +780,7 @@ static void smmu_iommu_detach_dev(struct iommu_domain *domain,
goto out;
}
}
- dev_err(smmu->dev, "Couldn't find %s\n", dev_name(c->dev));
+ dev_err(smmu->dev, "Couldn't find %s\n", dev_name(dev));
out:
spin_unlock(&as->client_lock);
}


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