arch/um/drivers/line.c: safely iterate over list of winch handlers

[pandora-kernel.git] / arch / um / drivers / line.c

diff --git a/arch/um/drivers/line.c b/arch/um/drivers/line.c
index 1664cce..050e4dd 100644 (file)
--- a/arch/um/drivers/line.c
+++ b/arch/um/drivers/line.c
@@ -821,12 +821,12 @@ void register_winch_irq(int fd, int tty_fd, int pid, struct tty_struct *tty,
 
 static void unregister_winch(struct tty_struct *tty)
 {
-       struct list_head *ele;
+       struct list_head *ele, *next;
        struct winch *winch;
 
        spin_lock(&winch_handler_lock);
 
-       list_for_each(ele, &winch_handlers) {
+       list_for_each_safe(ele, next, &winch_handlers) {
                winch = list_entry(ele, struct winch, list);
                if (winch->tty == tty) {
                        free_winch(winch, 1);