ATM when receiving a packet the whole buffer is invalidated, this change optimizes this behaviour.
Signed-off-by: Karl Beldan karl.beldan+oss@gmail.com --- drivers/net/davinci_emac.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/net/davinci_emac.c b/drivers/net/davinci_emac.c index 55461b0..e26e727 100644 --- a/drivers/net/davinci_emac.c +++ b/drivers/net/davinci_emac.c @@ -677,13 +677,13 @@ static int davinci_eth_rcv_packet (struct eth_device *dev) printf ("WARN: emac_rcv_pkt: Error in packet\n"); } else { unsigned long tmp = (unsigned long)rx_curr_desc->buffer; + unsigned short len = + rx_curr_desc->buff_off_len & 0xffff;
- invalidate_dcache_range(tmp, round_up(tmp + EMAC_RXBUF_SIZE, - ARCH_DMA_MINALIGN)); - net_process_received_packet( - rx_curr_desc->buffer, - rx_curr_desc->buff_off_len & 0xffff); - ret = rx_curr_desc->buff_off_len & 0xffff; + invalidate_dcache_range(tmp, round_up(tmp + len, + ARCH_DMA_MINALIGN)); + net_process_received_packet(rx_curr_desc->buffer, len); + ret = len; }
/* Ack received packet descriptor */