diff options
| author | Ingo Molnar <mingo@elte.hu> | 2008-12-12 13:48:57 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-12-12 13:48:57 +0100 |
| commit | 45ab6b0c76d0e4cce5bd608ccf97b0f6b20f18df (patch) | |
| tree | 4d51c73533c386aee16fde1e74b5e3bc22eedc53 /drivers/net/enc28j60.c | |
| parent | 81444a799550214f549caf579cf65a0ca55e70b7 (diff) | |
| parent | d65bd5ecb2bd166cea4952a59b7e16cc3ad6ef6c (diff) | |
Merge branch 'sched/core' into cpus4096
Conflicts:
include/linux/ftrace.h
kernel/sched.c
Diffstat (limited to 'drivers/net/enc28j60.c')
| -rw-r--r-- | drivers/net/enc28j60.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/drivers/net/enc28j60.c b/drivers/net/enc28j60.c index e1b441effbb..c414554ac32 100644 --- a/drivers/net/enc28j60.c +++ b/drivers/net/enc28j60.c @@ -568,6 +568,17 @@ static u16 erxrdpt_workaround(u16 next_packet_ptr, u16 start, u16 end) return erxrdpt; } +/* + * Calculate wrap around when reading beyond the end of the RX buffer + */ +static u16 rx_packet_start(u16 ptr) +{ + if (ptr + RSV_SIZE > RXEND_INIT) + return (ptr + RSV_SIZE) - (RXEND_INIT - RXSTART_INIT + 1); + else + return ptr + RSV_SIZE; +} + static void nolock_rxfifo_init(struct enc28j60_net *priv, u16 start, u16 end) { u16 erxrdpt; @@ -938,8 +949,9 @@ static void enc28j60_hw_rx(struct net_device *ndev) skb->dev = ndev; skb_reserve(skb, NET_IP_ALIGN); /* copy the packet from the receive buffer */ - enc28j60_mem_read(priv, priv->next_pk_ptr + sizeof(rsv), - len, skb_put(skb, len)); + enc28j60_mem_read(priv, + rx_packet_start(priv->next_pk_ptr), + len, skb_put(skb, len)); if (netif_msg_pktdata(priv)) dump_packet(__func__, skb->len, skb->data); skb->protocol = eth_type_trans(skb, ndev); |