+static void r8a66597_interval_timer(unsigned long _r8a66597)
+{
+ struct r8a66597 *r8a66597 = (struct r8a66597 *)_r8a66597;
+ unsigned long flags;
+ u16 pipenum;
+ struct r8a66597_td *td;
+
+ spin_lock_irqsave(&r8a66597->lock, flags);
+
+ for (pipenum = 0; pipenum < R8A66597_MAX_NUM_PIPE; pipenum++) {
+ if (!(r8a66597->interval_map & (1 << pipenum)))
+ continue;
+ if (timer_pending(&r8a66597->interval_timer[pipenum]))
+ continue;
+
+ td = r8a66597_get_td(r8a66597, pipenum);
+ if (td)
+ start_transfer(r8a66597, td);
+ }
+
+ spin_unlock_irqrestore(&r8a66597->lock, flags);
+}
+