Validation of page frame number doesn't require protection with a spinlock,
let's move it out of spinlock for consistency.
Signed-off-by: Dmitry Osipenko <digetx@xxxxxxxxx>
---
drivers/iommu/tegra-gart.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/iommu/tegra-gart.c b/drivers/iommu/tegra-gart.c
index 54699e341110..55fdb56d85ea 100644
--- a/drivers/iommu/tegra-gart.c
+++ b/drivers/iommu/tegra-gart.c
@@ -276,13 +276,13 @@ static int gart_iommu_map(struct iommu_domain *domain, unsigned long iova,
if (!gart_iova_range_valid(gart, iova, bytes))
return -EINVAL;
- spin_lock_irqsave(&gart->pte_lock, flags);
pfn = __phys_to_pfn(pa);
if (!pfn_valid(pfn)) {
dev_err(gart->dev, "Invalid page: %pa\n", &pa);
- spin_unlock_irqrestore(&gart->pte_lock, flags);
return -EINVAL;
}
+
+ spin_lock_irqsave(&gart->pte_lock, flags);
pte = gart_read_pte(gart, iova);
if (pte & GART_ENTRY_PHYS_ADDR_VALID) {
spin_unlock_irqrestore(&gart->pte_lock, flags);
--
2.13.2
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