FROMLIST: usb: dwc2: resume root hub to handle disconnect of device

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

diff --git a/kernel/padata.c b/kernel/padata.c
index b38bea9c466a012a9bc04423af25a5c7d04be34d..401227e3967c8188ef54a813c1f1769124a2c8ec 100644 (file)
--- a/kernel/padata.c
+++ b/kernel/padata.c
@@ -189,19 +189,20 @@ static struct padata_priv *padata_get_next(struct parallel_data *pd)
 
        reorder = &next_queue->reorder;
 
+       spin_lock(&reorder->lock);
        if (!list_empty(&reorder->list)) {
                padata = list_entry(reorder->list.next,
                                    struct padata_priv, list);
 
-               spin_lock(&reorder->lock);
                list_del_init(&padata->list);
                atomic_dec(&pd->reorder_objects);
-               spin_unlock(&reorder->lock);
 
                pd->processed++;
 
+               spin_unlock(&reorder->lock);
                goto out;
        }
+       spin_unlock(&reorder->lock);
 
        if (__this_cpu_read(pd->pqueue->cpu_index) == next_queue->cpu_index) {
                padata = ERR_PTR(-ENODATA);