Revert "[REVERTME] arch/risc-v/src/mpfs/mpfs_ethernet.c: Hack the ethernet driver to re-initialize on rx timeout"

This reverts commit ece7367.

Author: jlaitine

arch/risc-v/src/mpfs/mpfs_ethernet.c

@@ -168,10 +168,6 @@
 
 #define MPFS_TXTIMEOUT   (60 * CLK_TCK)
 
-/* RX timeout = 30s */
-
-#define MPFS_RXTIMEOUT   (30 * CLK_TCK)
-
 /* PHY reset tim in loop counts */
 
 #define PHY_RESET_WAIT_COUNT (10)
@@ -269,7 +265,6 @@ struct mpfs_ethmac_s
   uint8_t       phyaddr;                         /* PHY address */
 #endif
   struct wdog_s txtimeout;                       /* TX timeout timer */
-  struct wdog_s rxtimeout;                       /* RX timeout timer */
   struct work_s irqwork;                         /* For deferring interrupt work to the work queue */
   struct work_s pollwork;                        /* For deferring poll work to the work queue */
   struct work_s timeoutwork;                     /* For managing timeouts */
@@ -392,7 +387,6 @@ static int  mpfs_ethconfig(struct mpfs_ethmac_s *priv);
 static void mpfs_ethreset(struct mpfs_ethmac_s *priv);
 
 static void mpfs_interrupt_work(void *arg);
-static void mpfs_txtimeout_expiry(wdparm_t arg);
 
 /****************************************************************************
  * Private Functions
@@ -474,14 +468,6 @@ static int mpfs_interrupt_0(int irq, void *context, void *arg)
       wd_cancel(&priv->txtimeout);
     }
 
-  if ((isr & GEM_INT_RECEIVE_COMPLETE) != 0)
-    {
-      /* If a RX transfer just completed, restart the timeout */
-
-      wd_start(&priv->rxtimeout, MPFS_RXTIMEOUT,
-               mpfs_txtimeout_expiry, (wdparm_t)priv);
-    }
-
   /* Schedule to perform the interrupt processing on the worker thread. */
 
   work_queue(ETHWORK, &priv->irqwork, mpfs_interrupt_work, priv, 0);
@@ -1570,13 +1556,6 @@ static int mpfs_ifup(struct net_driver_s *dev)
   up_enable_irq(priv->mac_q_int[2]);
   up_enable_irq(priv->mac_q_int[3]);
 
-  /* Set up the RX timeout. If we don't receive anything in time, try
-   * to re-initialize
-   */
-
-  wd_start(&priv->rxtimeout, MPFS_RXTIMEOUT,
-           mpfs_txtimeout_expiry, (wdparm_t)priv);
-
   return OK;
 }
 
@@ -1620,10 +1599,6 @@ static int mpfs_ifdown(struct net_driver_s *dev)
 
   wd_cancel(&priv->txtimeout);
 
-  /* Cancel the RX timeout timers */
-
-  wd_cancel(&priv->rxtimeout);
-
   /* Put the MAC in its reset, non-operational state.  This should be
    * a known configuration that will guarantee the mpfs_ifup() always
    * successfully brings the interface back up.