fakelb: move lock out of iteration

The list need to be protected while iteration which is need when other
list iterates at the same time over this list.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

1 files changed, 4 insertions, 3 deletions

diff --git a/drivers/net/ieee802154/fakelb.c b/drivers/net/ieee802154/fakelb.c
index c7e7d506224f..e1c0195c18aa 100644
--- a/drivers/net/ieee802154/fakelb.c
+++ b/drivers/net/ieee802154/fakelb.c
@@ -193,9 +193,7 @@ err_reg:
 
 static void fakelb_del(struct fakelb_phy *phy)
 {
-        write_lock_bh(&fakelb_lock);
         list_del(&phy->list);
-        write_unlock_bh(&fakelb_lock);
 
         ieee802154_unregister_hw(phy->hw);
         ieee802154_free_hw(phy->hw);
@@ -217,8 +215,10 @@ static int fakelb_probe(struct platform_device *pdev)
         return 0;
 
 err_slave:
+        write_lock_bh(&fakelb_lock);
         list_for_each_entry_safe(phy, tmp, &fakelb_phys, list)
                 fakelb_del(phy);
+        write_unlock_bh(&fakelb_lock);
         return err;
 }
 
@@ -226,9 +226,10 @@ static int fakelb_remove(struct platform_device *pdev)
 {
         struct fakelb_phy *phy, *temp;
 
+        write_lock_bh(&fakelb_lock);
         list_for_each_entry_safe(phy, temp, &fakelb_phys, list)
                 fakelb_del(phy);
-
+        write_unlock_bh(&fakelb_lock);
         return 0;
 }