net: xilinx emaclite: Fix return values

Fix return values for initialize/init/recv/send functions

Signed-off-by: Michal Simek <monstr@monstr.eu>

diff --git a/drivers/net/xilinx_emaclite.c b/drivers/net/xilinx_emaclite.c
index 76af939..3c7c250 100644 (file)
--- a/drivers/net/xilinx_emaclite.c
+++ b/drivers/net/xilinx_emaclite.c
@@ -226,7 +226,7 @@ static int emaclite_send (struct eth_device *dev, volatile void *ptr, int len)
                out_be32 (emaclite.baseaddress + XEL_TSR_OFFSET +
                XEL_BUFFER_OFFSET, 0);
 #endif
-               return 0;
+               return -1;
        }
 
        /* Determine the expected TX buffer address */
@@ -252,7 +252,7 @@ static int emaclite_send (struct eth_device *dev, volatile void *ptr, int len)
                        reg |= XEL_TSR_XMIT_ACTIVE_MASK;
                }
                out_be32 (baseaddress + XEL_TSR_OFFSET, reg);
-               return 1;
+               return 0;
        }
 #ifdef CONFIG_XILINX_EMACLITE_TX_PING_PONG
        /* Switch to second buffer */
@@ -273,11 +273,11 @@ static int emaclite_send (struct eth_device *dev, volatile void *ptr, int len)
                        reg |= XEL_TSR_XMIT_ACTIVE_MASK;
                }
                out_be32 (baseaddress + XEL_TSR_OFFSET, reg);
-               return 1;
+               return 0;
        }
 #endif
        puts ("Error while sending frame\n");
-       return 0;
+       return -1;
 }
 
 static int emaclite_recv(struct eth_device *dev)
@@ -337,7 +337,7 @@ static int emaclite_recv(struct eth_device *dev)
 
        debug ("Packet receive from 0x%x, length %dB\n", baseaddress, length);
        NetReceive ((uchar *) etherrxbuff, length);
-       return 1;
+       return length;
 
 }
 
@@ -347,7 +347,7 @@ int xilinx_emaclite_initialize (bd_t *bis, int base_addr)
 
        dev = malloc(sizeof(*dev));
        if (dev == NULL)
-               hang();
+               return -1;
 
        memset(dev, 0, sizeof(*dev));
        sprintf(dev->name, "Xilinx_Emaclite");
@@ -361,5 +361,5 @@ int xilinx_emaclite_initialize (bd_t *bis, int base_addr)
 
        eth_register(dev);
 
-       return 0;
+       return 1;
 }