diff options
| -rw-r--r-- | drivers/net/sis190.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/net/sis190.c b/drivers/net/sis190.c index 1e8e7111c26..2229698debb 100644 --- a/drivers/net/sis190.c +++ b/drivers/net/sis190.c @@ -69,6 +69,7 @@ #define TX_RING_BYTES (NUM_TX_DESC * sizeof(struct TxDesc)) #define RX_RING_BYTES (NUM_RX_DESC * sizeof(struct RxDesc)) #define RX_BUF_SIZE 1536 +#define RX_BUF_MASK 0xfff8 #define SIS190_REGS_SIZE 0x80 #define SIS190_TX_TIMEOUT (6*HZ) @@ -400,7 +401,7 @@ static inline void sis190_give_to_asic(struct RxDesc *desc, u32 rx_buf_sz) u32 eor = le32_to_cpu(desc->size) & RingEnd; desc->PSize = 0x0; - desc->size = cpu_to_le32(rx_buf_sz | eor); + desc->size = cpu_to_le32((rx_buf_sz & RX_BUF_MASK) | eor); wmb(); desc->status = cpu_to_le32(OWNbit | INTbit); } @@ -924,6 +925,11 @@ static void sis190_set_rxbufsize(struct sis190_private *tp, unsigned int mtu = dev->mtu; tp->rx_buf_sz = (mtu > RX_BUF_SIZE) ? mtu + ETH_HLEN + 8 : RX_BUF_SIZE; + /* RxDesc->size has a licence to kill the lower bits */ + if (tp->rx_buf_sz & 0x07) { + tp->rx_buf_sz += 8; + tp->rx_buf_sz &= RX_BUF_MASK; + } } static int sis190_open(struct net_device *dev) |