1 files changed, 37 insertions, 32 deletions

diff --git a/arch/powerpc/kernel/iommu.c b/arch/powerpc/kernel/iommu.c
index ea1ba89f9c90..3857d7e2af0c 100644
--- a/arch/powerpc/kernel/iommu.c
+++ b/arch/powerpc/kernel/iommu.c
@@ -458,6 +458,42 @@ void iommu_unmap_sg(struct iommu_table *tbl, struct scatterlist *sglist,
         spin_unlock_irqrestore(&(tbl->it_lock), flags);
 }
 
+static void iommu_table_clear(struct iommu_table *tbl)
+{
+        if (!__kdump_flag) {
+                /* Clear the table in case firmware left allocations in it */
+                ppc_md.tce_free(tbl, tbl->it_offset, tbl->it_size);
+                return;
+        }
+
+#ifdef CONFIG_CRASH_DUMP
+        if (ppc_md.tce_get) {
+                unsigned long index, tceval, tcecount = 0;
+
+                /* Reserve the existing mappings left by the first kernel. */
+                for (index = 0; index < tbl->it_size; index++) {
+                        tceval = ppc_md.tce_get(tbl, index + tbl->it_offset);
+                        /*
+                         * Freed TCE entry contains 0x7fffffffffffffff on JS20
+                         */
+                        if (tceval && (tceval != 0x7fffffffffffffffUL)) {
+                                __set_bit(index, tbl->it_map);
+                                tcecount++;
+                        }
+                }
+
+                if ((tbl->it_size - tcecount) < KDUMP_MIN_TCE_ENTRIES) {
+                        printk(KERN_WARNING "TCE table is full; freeing ");
+                        printk(KERN_WARNING "%d entries for the kdump boot\n",
+                                KDUMP_MIN_TCE_ENTRIES);
+                        for (index = tbl->it_size - KDUMP_MIN_TCE_ENTRIES;
+                                index < tbl->it_size; index++)
+                                __clear_bit(index, tbl->it_map);
+                }
+        }
+#endif
+}
+
 /*
  * Build a iommu_table structure.  This contains a bit map which
  * is used to manage allocation of the tce space.
@@ -484,38 +520,7 @@ struct iommu_table *iommu_init_table(struct iommu_table *tbl, int nid)
         tbl->it_largehint = tbl->it_halfpoint;
         spin_lock_init(&tbl->it_lock);
 
-#ifdef CONFIG_CRASH_DUMP
-        if (ppc_md.tce_get) {
-                unsigned long index;
-                unsigned long tceval;
-                unsigned long tcecount = 0;
-
-                /*
-                 * Reserve the existing mappings left by the first kernel.
-                 */
-                for (index = 0; index < tbl->it_size; index++) {
-                        tceval = ppc_md.tce_get(tbl, index + tbl->it_offset);
-                        /*
-                         * Freed TCE entry contains 0x7fffffffffffffff on JS20
-                         */
-                        if (tceval && (tceval != 0x7fffffffffffffffUL)) {
-                                __set_bit(index, tbl->it_map);
-                                tcecount++;
-                        }
-                }
-                if ((tbl->it_size - tcecount) < KDUMP_MIN_TCE_ENTRIES) {
-                        printk(KERN_WARNING "TCE table is full; ");
-                        printk(KERN_WARNING "freeing %d entries for the kdump boot\n",
-                                KDUMP_MIN_TCE_ENTRIES);
-                        for (index = tbl->it_size - KDUMP_MIN_TCE_ENTRIES;
-                                index < tbl->it_size; index++)
-                                __clear_bit(index, tbl->it_map);
-                }
-        }
-#else
-        /* Clear the hardware table in case firmware left allocations in it */
-        ppc_md.tce_free(tbl, tbl->it_offset, tbl->it_size);
-#endif
+        iommu_table_clear(tbl);
 
         if (!welcomed) {
                 printk(KERN_INFO "IOMMU table initialized, virtual merging %s\n",