Since we are going to have 2 different preregistering helpers, let's
make it clear that mm_iommu_new() is only for the normal memory
(i.e.not device memory) and for existing areas mm_iommu_get() should be
used instead.
This removes the check for exact match as the check for overlap is
enough now.
Signed-off-by: Alexey Kardashevskiy <a...@ozlabs.ru>
---
Changes:
v2:
* remove the exact match check
---
arch/powerpc/mm/mmu_context_iommu.c | 6 ------
1 file changed, 6 deletions(-)
diff --git a/arch/powerpc/mm/mmu_context_iommu.c
b/arch/powerpc/mm/mmu_context_iommu.c
index babc6ad..580d89e 100644
--- a/arch/powerpc/mm/mmu_context_iommu.c
+++ b/arch/powerpc/mm/mmu_context_iommu.c
@@ -102,12 +102,6 @@ long mm_iommu_new(struct mm_struct *mm, unsigned long ua,
unsigned long entries,
list_for_each_entry_rcu(mem, &mm->context.iommu_group_mem_list,
next) {
- if ((mem->ua == ua) && (mem->entries == entries)) {
- ++mem->used;
- *pmem = mem;
- goto unlock_exit;
- }
-
/* Overlap? */
if ((mem->ua < (ua + (entries << PAGE_SHIFT))) &&
(ua < (mem->ua +
--
2.17.1
