net: fec: Define indexes as 'unsigned int'

Fix the following warnings that happen when building with W=1 option:

drivers/net/ethernet/freescale/fec.c: In function 'fec_enet_free_buffers':
drivers/net/ethernet/freescale/fec.c:1337:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
drivers/net/ethernet/freescale/fec.c: In function 'fec_enet_alloc_buffers':
drivers/net/ethernet/freescale/fec.c:1361:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
drivers/net/ethernet/freescale/fec.c: In function 'fec_enet_init':
drivers/net/ethernet/freescale/fec.c:1631:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/freescale/fec.c b/drivers/net/ethernet/freescale/fec.c
index e3f3937..911d025 100644 (file)
--- a/drivers/net/ethernet/freescale/fec.c
+++ b/drivers/net/ethernet/freescale/fec.c
@@ -1332,7 +1332,7 @@ static int fec_enet_ioctl(struct net_device *ndev, struct ifreq *rq, int cmd)
 static void fec_enet_free_buffers(struct net_device *ndev)
 {
        struct fec_enet_private *fep = netdev_priv(ndev);
-       int i;
+       unsigned int i;
        struct sk_buff *skb;
        struct bufdesc  *bdp;
 
@@ -1356,7 +1356,7 @@ static void fec_enet_free_buffers(struct net_device *ndev)
 static int fec_enet_alloc_buffers(struct net_device *ndev)
 {
        struct fec_enet_private *fep = netdev_priv(ndev);
-       int i;
+       unsigned int i;
        struct sk_buff *skb;
        struct bufdesc  *bdp;
 
@@ -1598,7 +1598,7 @@ static int fec_enet_init(struct net_device *ndev)
        struct fec_enet_private *fep = netdev_priv(ndev);
        struct bufdesc *cbd_base;
        struct bufdesc *bdp;
-       int i;
+       unsigned int i;
 
        /* Allocate memory for buffer descriptors. */
        cbd_base = dma_alloc_coherent(NULL, PAGE_SIZE, &fep->bd_dma,