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| author | Stefan Roese <sr@denx.de> | 2007-07-12 16:32:08 +0200 |
|---|---|---|
| committer | Stefan Roese <sr@denx.de> | 2007-07-12 16:32:08 +0200 |
| commit | a2e1c7098cf9574386b0c96841dfc8ea5cc93578 (patch) | |
| tree | 25677af9bc069f9d4a17b1b14e4712b784d145d1 /cpu | |
| parent | 53629f439cc9daba166812749d2cf3102aca7aac (diff) | |
| download | u-boot-a2e1c7098cf9574386b0c96841dfc8ea5cc93578.tar.gz u-boot-a2e1c7098cf9574386b0c96841dfc8ea5cc93578.tar.xz u-boot-a2e1c7098cf9574386b0c96841dfc8ea5cc93578.zip | |
ppc4xx: Change receive buffer handling in the 4xx emac driver
This change fixes a bug in the receive buffer handling, that
could lead to problems upon high network traffic (broadcasts...).
Signed-off-by: Stefan Roese <sr@denx.de>
Diffstat (limited to 'cpu')
| -rw-r--r-- | cpu/ppc4xx/4xx_enet.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/cpu/ppc4xx/4xx_enet.c b/cpu/ppc4xx/4xx_enet.c index 1200d021af..b90363f47a 100644 --- a/cpu/ppc4xx/4xx_enet.c +++ b/cpu/ppc4xx/4xx_enet.c @@ -1415,10 +1415,8 @@ static void enet_rcv (struct eth_device *dev, unsigned long malisr) if ((MAL_RX_CTRL_EMPTY & hw_p->rx[i].ctrl) || (loop_count >= NUM_RX_BUFF)) break; + loop_count++; - hw_p->rx_slot++; - if (NUM_RX_BUFF == hw_p->rx_slot) - hw_p->rx_slot = 0; handled++; data_len = (unsigned long) hw_p->rx[i].data_len; /* Get len */ if (data_len) { @@ -1468,6 +1466,10 @@ static void enet_rcv (struct eth_device *dev, unsigned long malisr) if (NUM_RX_BUFF == hw_p->rx_i_index) hw_p->rx_i_index = 0; + hw_p->rx_slot++; + if (NUM_RX_BUFF == hw_p->rx_slot) + hw_p->rx_slot = 0; + /* AS.HARNOIS * free receive buffer only when * buffer has been handled (eth_rx) |