From: Joerg Roedel <jroedel@suse.de>
Date: Mon, 17 Feb 2020 17:27:44 +0100
Subject: iommu/vt-d: Remove deferred_attach_domain()
Git-commit: 96d170f3b1a607612caf3618c534d5c64fc2d61b
References: bsc#1159594
Patch-mainline: v5.6-rc3

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>
---
 drivers/iommu/intel-iommu.c | 11 +++--------
 1 file changed, 3 insertions(+), 8 deletions(-)

--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -2440,11 +2440,6 @@ static void do_deferred_attach(struct de
 		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)
 {
@@ -3515,7 +3510,7 @@ static dma_addr_t __intel_map_single(str
 
 	BUG_ON(dir == DMA_NONE);
 
-	domain = deferred_attach_domain(dev);
+	domain = find_domain(dev);
 	if (!domain)
 		return DMA_MAPPING_ERROR;
 
@@ -3735,7 +3730,7 @@ static int intel_map_sg(struct device *d
 	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;