@@ -1030,10 +1030,7 @@ static int irq_thread(void *data)
* This is the regular exit path. __free_irq() is stopping the
* thread via kthread_stop() after calling
* synchronize_irq(). So neither IRQTF_RUNTHREAD nor the
- * oneshot mask bit can be set. We cannot verify that as we
- * cannot touch the oneshot mask at this point anymore as
- * __setup_irq() might have given out currents thread_mask
- * again.
+ * oneshot mask bit can be set.
*/
task_work_cancel(current, irq_thread_dtor);
return 0;
@@ -1257,7 +1254,9 @@ __setup_irq(unsigned int irq, struct irq_desc *desc, struct irqaction *new)
/*
* Protects against a concurrent __free_irq() call which might wait
* for synchronize_irq() to complete without holding the optional
- * chip bus lock and desc->lock.
+ * chip bus lock and desc->lock. Also protects against handing out
+ * a recycled oneshot thread_mask bit while it's still in use by
+ * its previous owner.
*/
mutex_lock(&desc->request_mutex);