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| author | David Dillow <dave@thedillows.org> | 2010-03-04 05:37:16 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-03-05 23:00:18 +0100 |
| commit | 5fe88eae26dbd24eed73eb0b681e13981fd486b3 (patch) | |
| tree | ea9c3175edbed98f6cbce7a680eb451f7872633b /drivers/net/typhoon.c | |
| parent | ethtool: Add direct access to ops->get_sset_count (diff) | |
| download | linux-5fe88eae26dbd24eed73eb0b681e13981fd486b3.tar.xz linux-5fe88eae26dbd24eed73eb0b681e13981fd486b3.zip | |
typhoon: fix incorrect use of smp_wmb()
The typhoon driver was incorrectly using smp_wmb() to order memory
accesses against IO to the NIC in a few instances. Use wmb() instead,
which is required to actually order between memory types.
Signed-off-by: David Dillow <dave@thedillows.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/typhoon.c')
| -rw-r--r-- | drivers/net/typhoon.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/net/typhoon.c b/drivers/net/typhoon.c index e3ddcb8f29df..1cf012d3e072 100644 --- a/drivers/net/typhoon.c +++ b/drivers/net/typhoon.c @@ -480,7 +480,7 @@ typhoon_hello(struct typhoon *tp) typhoon_inc_cmd_index(&ring->lastWrite, 1); INIT_COMMAND_NO_RESPONSE(cmd, TYPHOON_CMD_HELLO_RESP); - smp_wmb(); + wmb(); iowrite32(ring->lastWrite, tp->ioaddr + TYPHOON_REG_CMD_READY); spin_unlock(&tp->command_lock); } @@ -1311,13 +1311,15 @@ typhoon_init_interface(struct typhoon *tp) tp->txlo_dma_addr = le32_to_cpu(iface->txLoAddr); tp->card_state = Sleeping; - smp_wmb(); tp->offload = TYPHOON_OFFLOAD_IP_CHKSUM | TYPHOON_OFFLOAD_TCP_CHKSUM; tp->offload |= TYPHOON_OFFLOAD_UDP_CHKSUM | TSO_OFFLOAD_ON; spin_lock_init(&tp->command_lock); spin_lock_init(&tp->state_lock); + + /* Force the writes to the shared memory area out before continuing. */ + wmb(); } static void |