1 files changed, 15 insertions, 13 deletions

diff --git a/arch/alpha/kernel/pci_iommu.c b/arch/alpha/kernel/pci_iommu.c
index bbf9990cd23..e54f829528c 100644
--- a/arch/alpha/kernel/pci_iommu.c
+++ b/arch/alpha/kernel/pci_iommu.c
@@ -132,12 +132,15 @@ iommu_arena_find_pages(struct pci_iommu_arena *arena, long n, long mask)
 {
         unsigned long *ptes;
         long i, p, nent;
+        int pass = 0;
 
         /* Search forward for the first mask-aligned sequence of N free ptes */
         ptes = arena->ptes;
         nent = arena->size >> PAGE_SHIFT;
         p = ALIGN(arena->next_entry, mask + 1);
         i = 0;
+
+again:
         while (i < n && p+i < nent) {
                 if (ptes[p+i])
                         p = ALIGN(p + i + 1, mask + 1), i = 0;
@@ -146,19 +149,18 @@ iommu_arena_find_pages(struct pci_iommu_arena *arena, long n, long mask)
         }
 
         if (i < n) {
-                /* Reached the end.  Flush the TLB and restart the
-                   search from the beginning.  */
-                alpha_mv.mv_pci_tbi(arena->hose, 0, -1);
-
-                p = 0, i = 0;
-                while (i < n && p+i < nent) {
-                        if (ptes[p+i])
-                                p = ALIGN(p + i + 1, mask + 1), i = 0;
-                        else
-                                i = i + 1;
-                }
-
-                if (i < n)
+                if (pass < 1) {
+                        /*
+                         * Reached the end.  Flush the TLB and restart
+                         * the search from the beginning.
+                        */
+                        alpha_mv.mv_pci_tbi(arena->hose, 0, -1);
+
+                        pass++;
+                        p = 0;
+                        i = 0;
+                        goto again;
+                } else
                         return -1;
         }