iommu/vt-d: Remove deferred_attach_domain()

The function is now only a wrapper around find_domain(). Remove the
function and call find_domain() directly at the call-sites.

Fixes: 1ee0186b9a12 ("iommu/vt-d: Refactor find_domain() helper")
Cc: stable@vger.kernel.org # v5.5
Reviewed-by: Jerry Snitselaar <jsnitsel@redhat.com>
Acked-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>

diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index 723f615..69f1c6b 100644 (file)
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -2539,11 +2539,6 @@ static void do_deferred_attach(struct device *dev)
                intel_iommu_attach_device(domain, dev);
 }
 
-static struct dmar_domain *deferred_attach_domain(struct device *dev)
-{
-       return find_domain(dev);
-}
-
 static inline struct device_domain_info *
 dmar_search_domain_by_dev_info(int segment, int bus, int devfn)
 {
@@ -3643,7 +3638,7 @@ static dma_addr_t __intel_map_single(struct device *dev, phys_addr_t paddr,
 
        BUG_ON(dir == DMA_NONE);
 
-       domain = deferred_attach_domain(dev);
+       domain = find_domain(dev);
        if (!domain)
                return DMA_MAPPING_ERROR;
 
@@ -3863,7 +3858,7 @@ static int intel_map_sg(struct device *dev, struct scatterlist *sglist, int nele
        if (!iommu_need_mapping(dev))
                return dma_direct_map_sg(dev, sglist, nelems, dir, attrs);
 
-       domain = deferred_attach_domain(dev);
+       domain = find_domain(dev);
        if (!domain)
                return 0;
 
@@ -3961,7 +3956,7 @@ bounce_map_single(struct device *dev, phys_addr_t paddr, size_t size,
        if (unlikely(attach_deferred(dev)))
                do_deferred_attach(dev);
 
-       domain = deferred_attach_domain(dev);
+       domain = find_domain(dev);
 
        if (WARN_ON(dir == DMA_NONE || !domain))
                return DMA_MAPPING_ERROR;