diff options
| author | Denis Bolotin <dbolotin@marvell.com> | 2019-01-03 12:02:40 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-02-27 10:06:59 +0100 |
| commit | 351d66319845a1751ba9bb757077f0d259f05e14 (patch) | |
| tree | 60b83de5e265931771d14f1ac7efabdd79bce87f /drivers/net | |
| parent | f98bcfadc81aaa38711b119f920dce3448b5782c (diff) | |
qed: Fix qed_ll2_post_rx_buffer_notify_fw() by adding a write memory barrier
[ Upstream commit 46721c3d9e273aea880e9ff835b0e1271e1cd2fb ]
Make sure chain element is updated before ringing the doorbell.
Signed-off-by: Denis Bolotin <dbolotin@marvell.com>
Signed-off-by: Ariel Elior <aelior@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/ethernet/qlogic/qed/qed_ll2.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/net/ethernet/qlogic/qed/qed_ll2.c b/drivers/net/ethernet/qlogic/qed/qed_ll2.c index a3360cbdb30b..5b968e6a0a7f 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_ll2.c +++ b/drivers/net/ethernet/qlogic/qed/qed_ll2.c @@ -1013,6 +1013,10 @@ static void qed_ll2_post_rx_buffer_notify_fw(struct qed_hwfn *p_hwfn, cq_prod = qed_chain_get_prod_idx(&p_rx->rcq_chain); rx_prod.bd_prod = cpu_to_le16(bd_prod); rx_prod.cqe_prod = cpu_to_le16(cq_prod); + + /* Make sure chain element is updated before ringing the doorbell */ + dma_wmb(); + DIRECT_REG_WR(p_rx->set_prod_addr, *((u32 *)&rx_prod)); } |