iommu/vt-d: Delete unnecessary check in domain_context_mapping_one()

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@gmail.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>

diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index 934cef9..1dab9f7 100644 (file)
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -2058,7 +2058,7 @@ 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,