ramips: request_irq prior to dma allocation, and handle the case if it fails

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@18173 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/target/linux/ramips/files/drivers/net/ramips.c b/target/linux/ramips/files/drivers/net/ramips.c
index 35c44cc..fa09caa 100644 (file)
--- a/target/linux/ramips/files/drivers/net/ramips.c
+++ b/target/linux/ramips/files/drivers/net/ramips.c
@@ -302,10 +302,15 @@ ramips_eth_open(struct net_device *dev)
        struct raeth_priv *priv = netdev_priv(dev);
        int err;
 
-       err = ramips_alloc_dma(dev);
+       err = request_irq(dev->irq, ramips_eth_irq, IRQF_DISABLED,
+                         dev->name, dev);
        if (err)
                return err;
 
+       err = ramips_alloc_dma(dev);
+       if (err)
+               goto err_free_irq;
+
        ramips_setup_dma(dev);
        ramips_fe_wr((ramips_fe_rr(RAMIPS_PDMA_GLO_CFG) & 0xff) |
                (RAMIPS_TX_WB_DDONE | RAMIPS_RX_DMA_EN |
@@ -315,7 +320,6 @@ ramips_eth_open(struct net_device *dev)
                ~(RAMIPS_US_CYC_CNT_MASK << RAMIPS_US_CYC_CNT_SHIFT)) |
                ((rt305x_sys_freq / RAMIPS_US_CYC_CNT_DIVISOR) << RAMIPS_US_CYC_CNT_SHIFT),
                RAMIPS_FE_GLO_CFG);
-       request_irq(dev->irq, ramips_eth_irq, IRQF_DISABLED, dev->name, dev);
        tasklet_init(&priv->tx_housekeeping_tasklet, ramips_eth_tx_housekeeping,
                (unsigned long)dev);
        tasklet_init(&priv->rx_tasklet, ramips_eth_rx_hw, (unsigned long)dev);
@@ -332,6 +336,10 @@ ramips_eth_open(struct net_device *dev)
        ramips_fe_wr(0, RAMIPS_FE_RST_GL);
        netif_start_queue(dev);
        return 0;
+
+ err_free_irq:
+       free_irq(dev->irq, dev);
+       return err;
 }
 
 static int