[PATCH] ppc64: iSeries iommu cleanups

This patch just does some cleanups of iSeries_iommu.c
	remove lots of unneeded includes
	use list_for_each_entry
	white space
	formatting
No semantic changes.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

arch/ppc64/kernel/iSeries_iommu.c

@@ -25,30 +25,14 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  */
 
-#include <linux/config.h>
-#include <linux/init.h>
 #include <linux/types.h>
-#include <linux/slab.h>
-#include <linux/mm.h>
-#include <linux/spinlock.h>
-#include <linux/string.h>
-#include <linux/pci.h>
 #include <linux/dma-mapping.h>
-#include <asm/io.h>
-#include <asm/prom.h>
-#include <asm/rtas.h>
-#include <asm/ppcdebug.h>
+#include <linux/list.h>
 
-#include <asm/iSeries/HvCallXm.h>
-#include <asm/iSeries/LparData.h>
 #include <asm/iommu.h>
-#include <asm/pci-bridge.h>
-#include <asm/iSeries/iSeries_pci.h>
-
 #include <asm/machdep.h>
-
-#include "pci.h"
-
+#include <asm/iSeries/HvCallXm.h>
+#include <asm/iSeries/iSeries_pci.h>
 
 extern struct list_head iSeries_Global_Device_List;
 
@@ -76,12 +60,11 @@ static void tce_build_iSeries(struct iommu_table *tbl, long index, long npages,
 				tce.te_bits.tb_pciwr = 1;
 		}
 
-		rc = HvCallXm_setTce((u64)tbl->it_index,
-				     (u64)index,
+		rc = HvCallXm_setTce((u64)tbl->it_index, (u64)index,
 				tce.te_word);
 		if (rc)
-			panic("PCI_DMA: HvCallXm_setTce failed, Rc: 0x%lx\n", rc);
-
+			panic("PCI_DMA: HvCallXm_setTce failed, Rc: 0x%lx\n",
+					rc);
 		index++;
 		uaddr += PAGE_SIZE;
 	}
@@ -90,20 +73,14 @@ static void tce_build_iSeries(struct iommu_table *tbl, long index, long npages,
 static void tce_free_iSeries(struct iommu_table *tbl, long index, long npages)
 {
 	u64 rc;
-	union tce_entry tce;
 
 	while (npages--) {
-		tce.te_word = 0;
-		rc = HvCallXm_setTce((u64)tbl->it_index,
-				     (u64)index,
-				     tce.te_word);
-
+		rc = HvCallXm_setTce((u64)tbl->it_index, (u64)index, 0);
 		if (rc)
-			panic("PCI_DMA: HvCallXm_setTce failed, Rc: 0x%lx\n", rc);
-
+			panic("PCI_DMA: HvCallXm_setTce failed, Rc: 0x%lx\n",
+					rc);
 		index++;
 	}
-
 }
 
 
@@ -115,17 +92,14 @@ static struct iommu_table *iommu_table_find(struct iommu_table * tbl)
 {
 	struct iSeries_Device_Node *dp;
 
-	for (dp =  (struct iSeries_Device_Node *)iSeries_Global_Device_List.next;
-	     dp != (struct iSeries_Device_Node *)&iSeries_Global_Device_List;
-	     dp =  (struct iSeries_Device_Node *)dp->Device_List.next)
-		if (dp->iommu_table                 != NULL &&
-		    dp->iommu_table->it_type        == TCE_PCI &&
-		    dp->iommu_table->it_offset      == tbl->it_offset &&
-		    dp->iommu_table->it_index       == tbl->it_index &&
-		    dp->iommu_table->it_size        == tbl->it_size)
+	list_for_each_entry(dp, &iSeries_Global_Device_List, Device_List) {
+		if ((dp->iommu_table != NULL) &&
+		    (dp->iommu_table->it_type == TCE_PCI) &&
+		    (dp->iommu_table->it_offset == tbl->it_offset) &&
+		    (dp->iommu_table->it_index == tbl->it_index) &&
+		    (dp->iommu_table->it_size == tbl->it_size))
 			return dp->iommu_table;
-
-
+	}
 	return NULL;
 }
 
@@ -143,8 +117,7 @@ static void iommu_table_getparms(struct iSeries_Device_Node* dn,
 {
 	struct iommu_table_cb *parms;
 
-	parms = (struct iommu_table_cb*)kmalloc(sizeof(*parms), GFP_KERNEL);
-
+	parms = kmalloc(sizeof(*parms), GFP_KERNEL);
 	if (parms == NULL)
 		panic("PCI_DMA: TCE Table Allocation failed.");
 
@@ -171,22 +144,20 @@ static void iommu_table_getparms(struct iSeries_Device_Node* dn,
 }
 
 
-void iommu_devnode_init(struct iSeries_Device_Node *dn) {
+void iommu_devnode_init(struct iSeries_Device_Node *dn)
+{
 	struct iommu_table *tbl;
 
-	tbl = (struct iommu_table *)kmalloc(sizeof(struct iommu_table), GFP_KERNEL);
+	tbl = kmalloc(sizeof(struct iommu_table), GFP_KERNEL);
 
 	iommu_table_getparms(dn, tbl);
 
 	/* Look for existing tce table */
 	dn->iommu_table = iommu_table_find(tbl);
-
 	if (dn->iommu_table == NULL)
 		dn->iommu_table = iommu_init_table(tbl);
 	else
 		kfree(tbl);
-
-	return;
 }