drm/exynos: remove unnecessary connector dpms control

[firefly-linux-kernel-4.4.55.git] / kernel / fork.c

diff --git a/kernel/fork.c b/kernel/fork.c
index 2254fbf23567c1e79d60556e4c970855337f8270..f00e319d8376289f0273fc1d301f4c1ebb132c86 100644 (file)
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -304,12 +304,17 @@ static struct task_struct *dup_task_struct(struct task_struct *orig)
        }
 
        err = arch_dup_task_struct(tsk, orig);
-       if (err)
-               goto out;
 
+       /*
+        * We defer looking at err, because we will need this setup
+        * for the clean up path to work correctly.
+        */
        tsk->stack = ti;
-
        setup_thread_stack(tsk, orig);
+
+       if (err)
+               goto out;
+
        clear_user_return_notifier(tsk);
        clear_tsk_need_resched(tsk);
        stackend = end_of_stack(tsk);
@@ -980,9 +985,8 @@ static int copy_io(unsigned long clone_flags, struct task_struct *tsk)
         * Share io context with parent, if CLONE_IO is set
         */
        if (clone_flags & CLONE_IO) {
-               tsk->io_context = ioc_task_link(ioc);
-               if (unlikely(!tsk->io_context))
-                       return -ENOMEM;
+               ioc_task_link(ioc);
+               tsk->io_context = ioc;
        } else if (ioprio_valid(ioc->ioprio)) {
                new_ioc = get_task_io_context(tsk, GFP_KERNEL, NUMA_NO_NODE);
                if (unlikely(!new_ioc))
@@ -1416,6 +1420,7 @@ static struct task_struct *copy_process(unsigned long clone_flags,
         */
        p->group_leader = p;
        INIT_LIST_HEAD(&p->thread_group);
+       INIT_HLIST_HEAD(&p->task_works);
 
        /* Now that the task is set up, run cgroup callbacks if
         * necessary. We need to run them before the task is visible