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Message-ID: <CAPgLHd9ASkPtFRw5gPWtGa+=KiGr93kxHJ6EaihcJVxVnPpz8A@mail.gmail.com>
Date: Tue, 21 Aug 2012 12:17:34 +0800
From: Wei Yongjun <weiyj.lk@...il.com>
To: martyn.welch@...com, manohar.vanga@...il.com,
gregkh@...uxfoundation.org
Cc: yongjun_wei@...ndmicro.com.cn, devel@...verdev.osuosl.org,
linux-kernel@...r.kernel.org
Subject: [PATCH] vme: vme_ca91cx42.c: use list_for_each_safe() when delete
list items
From: Wei Yongjun <yongjun_wei@...ndmicro.com.cn>
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@...ndmicro.com.cn>
---
drivers/vme/bridges/vme_ca91cx42.c | 20 ++++++++++----------
1 file changed, 10 insertions(+), 10 deletions(-)
diff --git a/drivers/vme/bridges/vme_ca91cx42.c b/drivers/vme/bridges/vme_ca91cx42.c
index e0df92e..1425d22c 100644
--- a/drivers/vme/bridges/vme_ca91cx42.c
+++ b/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 @@ err_reg:
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 @@ err_struct:
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);
--
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