redonkable
/
alistair23-linux
1
0
Fork 0
Code Releases Activity

de2104x: force correct order when writing to rx ring 

DescOwn should not be set, thus allowing the chip to use the
descriptor, before everything else is set up correctly.

Signed-off-by: Risto Suominen <Risto.Suominen@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
hifive-unleashed-5.1
Risto Suominen 2009-02-08 17:50:34 -08:00 committed by David S. Miller
parent cfbf84fcbc
commit b991d2bc4a
1 changed files with 2 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/net/tulip/de2104x.c
View File

@ -464,13 +464,14 @@ static void de_rx (struct de_private *de)
drop = 1;
rx_next:
de->rx_ring[rx_tail].opts1 = cpu_to_le32(DescOwn);
if (rx_tail == (DE_RX_RING_SIZE - 1))
de->rx_ring[rx_tail].opts2 =
cpu_to_le32(RingEnd | de->rx_buf_sz);
else
de->rx_ring[rx_tail].opts2 = cpu_to_le32(de->rx_buf_sz);
de->rx_ring[rx_tail].addr1 = cpu_to_le32(mapping);
wmb();
de->rx_ring[rx_tail].opts1 = cpu_to_le32(DescOwn);
rx_tail = NEXT_RX(rx_tail);
}