vme: vme_ca91cx42.c: use list_for_each_safe() when delete list items

Since we will be removing items off the list using list_del() we need
to use a safer version of the list_for_each() macro aptly named
list_for_each_safe(). We should use the safe macro if the loop
involves deletions of items.
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/vme/bridges/vme_ca91cx42.c

@@ -1603,7 +1603,7 @@ static int ca91cx42_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 {
 	int retval, i;
 	u32 data;
-	struct list_head *pos = NULL;
+	struct list_head *pos = NULL, *n;
 	struct vme_bridge *ca91cx42_bridge;
 	struct ca91cx42_driver *ca91cx42_device;
 	struct vme_master_resource *master_image;
@@ -1821,28 +1821,28 @@ static int ca91cx42_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 	ca91cx42_crcsr_exit(ca91cx42_bridge, pdev);
 err_lm:
 	/* resources are stored in link list */
-	list_for_each(pos, &ca91cx42_bridge->lm_resources) {
+	list_for_each_safe(pos, n, &ca91cx42_bridge->lm_resources) {
 		lm = list_entry(pos, struct vme_lm_resource, list);
 		list_del(pos);
 		kfree(lm);
 	}
 err_dma:
 	/* resources are stored in link list */
-	list_for_each(pos, &ca91cx42_bridge->dma_resources) {
+	list_for_each_safe(pos, n, &ca91cx42_bridge->dma_resources) {
 		dma_ctrlr = list_entry(pos, struct vme_dma_resource, list);
 		list_del(pos);
 		kfree(dma_ctrlr);
 	}
 err_slave:
 	/* resources are stored in link list */
-	list_for_each(pos, &ca91cx42_bridge->slave_resources) {
+	list_for_each_safe(pos, n, &ca91cx42_bridge->slave_resources) {
 		slave_image = list_entry(pos, struct vme_slave_resource, list);
 		list_del(pos);
 		kfree(slave_image);
 	}
 err_master:
 	/* resources are stored in link list */
-	list_for_each(pos, &ca91cx42_bridge->master_resources) {
+	list_for_each_safe(pos, n, &ca91cx42_bridge->master_resources) {
 		master_image = list_entry(pos, struct vme_master_resource,
 			list);
 		list_del(pos);
@@ -1868,7 +1868,7 @@ static int ca91cx42_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 
 static void ca91cx42_remove(struct pci_dev *pdev)
 {
-	struct list_head *pos = NULL;
+	struct list_head *pos = NULL, *n;
 	struct vme_master_resource *master_image;
 	struct vme_slave_resource *slave_image;
 	struct vme_dma_resource *dma_ctrlr;
@@ -1905,28 +1905,28 @@ static void ca91cx42_remove(struct pci_dev *pdev)
 	ca91cx42_crcsr_exit(ca91cx42_bridge, pdev);
 
 	/* resources are stored in link list */
-	list_for_each(pos, &ca91cx42_bridge->lm_resources) {
+	list_for_each_safe(pos, n, &ca91cx42_bridge->lm_resources) {
 		lm = list_entry(pos, struct vme_lm_resource, list);
 		list_del(pos);
 		kfree(lm);
 	}
 
 	/* resources are stored in link list */
-	list_for_each(pos, &ca91cx42_bridge->dma_resources) {
+	list_for_each_safe(pos, n, &ca91cx42_bridge->dma_resources) {
 		dma_ctrlr = list_entry(pos, struct vme_dma_resource, list);
 		list_del(pos);
 		kfree(dma_ctrlr);
 	}
 
 	/* resources are stored in link list */
-	list_for_each(pos, &ca91cx42_bridge->slave_resources) {
+	list_for_each_safe(pos, n, &ca91cx42_bridge->slave_resources) {
 		slave_image = list_entry(pos, struct vme_slave_resource, list);
 		list_del(pos);
 		kfree(slave_image);
 	}
 
 	/* resources are stored in link list */
-	list_for_each(pos, &ca91cx42_bridge->master_resources) {
+	list_for_each_safe(pos, n, &ca91cx42_bridge->master_resources) {
 		master_image = list_entry(pos, struct vme_master_resource,
 			list);
 		list_del(pos);