[PATCH] iommu/vt-d: Delete unnecessary check

From: Christos Gkekas
Date: Sun Oct 08 2017 - 18:33:43 EST


Variable did_old is unsigned so checking whether it is greater or equal
to zero is not necessary.

Signed-off-by: Christos Gkekas <chris.gekas@xxxxxxxxx>
---
drivers/iommu/intel-iommu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index ebb4835..cb7ce99 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -2054,7 +2054,7 @@ static int domain_context_mapping_one(struct dmar_domain *domain,
if (context_copied(context)) {
u16 did_old = context_domain_id(context);

- if (did_old >= 0 && did_old < cap_ndoms(iommu->cap)) {
+ if (did_old < cap_ndoms(iommu->cap)) {
iommu->flush.flush_context(iommu, did_old,
(((u16)bus) << 8) | devfn,
DMA_CCMD_MASK_NOBIT,
--
2.7.4