[ar71xx] ag71xx driver: improve poll routine

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@13525 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx.h b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx.h
index cddf3a0..c4a7044 100644 (file)
--- a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx.h
+++ b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx.h
@@ -37,7 +37,7 @@
 #define ETH_FCS_LEN    4
 
 #define AG71XX_DRV_NAME                "ag71xx"
-#define AG71XX_DRV_VERSION     "0.5.8"
+#define AG71XX_DRV_VERSION     "0.5.9"
 
 #define AG71XX_NAPI_TX         1
 

diff --git a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c
index 16dc029..5e31438 100644 (file)
--- a/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c
+++ b/target/linux/ar71xx/files/drivers/net/ag71xx/ag71xx_main.c
@@ -624,6 +624,8 @@ static int ag71xx_rx_packets(struct ag71xx *ag, int limit)
                        break;
                }
 
+               ag71xx_wr(ag, AG71XX_REG_RX_STATUS, RX_STATUS_PR);
+
                skb = ring->buf[i].skb;
                pktlen = ag71xx_desc_pktlen(desc);
                pktlen -= ETH_FCS_LEN;
@@ -643,8 +645,6 @@ static int ag71xx_rx_packets(struct ag71xx *ag, int limit)
                ring->buf[i].skb = NULL;
                done++;
 
-               ag71xx_wr(ag, AG71XX_REG_RX_STATUS, RX_STATUS_PR);
-
                ring->curr++;
                if ((ring->curr - ring->dirty) > (AG71XX_RX_RING_SIZE / 4))
                        ag71xx_ring_rx_refill(ag);
@@ -679,10 +679,16 @@ static int ag71xx_poll(struct napi_struct *napi, int limit)
 
        /* TODO: add OOM handler */
 
-       status = ag71xx_rr(ag, AG71XX_REG_INT_STATUS);
-       status &= AG71XX_INT_POLL;
+       status = ag71xx_rr(ag, AG71XX_REG_RX_STATUS);
+       if (unlikely(status & RX_STATUS_OF)) {
+               ag71xx_wr(ag, AG71XX_REG_RX_STATUS, RX_STATUS_OF);
+               dev->stats.rx_fifo_errors++;
+
+               /* restart RX */
+               ag71xx_wr(ag, AG71XX_REG_RX_CTRL, RX_CTRL_RXE);
+       }
 
-       if ((done < limit) && (!status)) {
+       if ((done < limit) && ((status & RX_STATUS_PR) == 0)) {
                DBG("%s: disable polling mode, done=%d, status=%x\n",
                        dev->name, done, status);
 
@@ -695,17 +701,6 @@ static int ag71xx_poll(struct napi_struct *napi, int limit)
                return 0;
        }
 
-       if (status & AG71XX_INT_RX_OF) {
-               if (netif_msg_rx_err(ag))
-                       printk(KERN_ALERT "%s: rx owerflow, restarting dma\n",
-                               dev->name);
-
-               /* ack interrupt */
-               ag71xx_wr(ag, AG71XX_REG_RX_STATUS, RX_STATUS_OF);
-               /* restart RX */
-               ag71xx_wr(ag, AG71XX_REG_RX_CTRL, RX_CTRL_RXE);
-       }
-
        DBG("%s: stay in polling mode, done=%d, status=%x\n",
                        dev->name, done, status);
        return 1;