/* Caller must hold fsg->lock */
static void wakeup_thread(struct fsg_common *common)
{
- smp_wmb(); /* ensure the write of bh->state is complete */
+ /*
+ * Ensure the reading of thread_wakeup_needed
+ * and the writing of bh->state are completed
+ */
+ smp_mb();
/* Tell the main thread that something has happened */
common->thread_wakeup_needed = 1;
if (common->thread_task)
}
__set_current_state(TASK_RUNNING);
common->thread_wakeup_needed = 0;
- smp_rmb(); /* ensure the latest bh->state is visible */
+
+ /*
+ * Ensure the writing of thread_wakeup_needed
+ * and the reading of bh->state are completed
+ */
+ smp_mb();
return rc;
}