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| author | Denis Bolotin <dbolotin@marvell.com> | 2019-01-03 12:02:40 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-02-27 10:08:52 +0100 |
| commit | 08eb17ec3c1b3f0b51b2fa18fcd6cd8e04aa572e (patch) | |
| tree | 00c9b7f83931d4681f6d6a3c3bf29f647e04eb3b /drivers/net/ethernet/qlogic/qed | |
| parent | 1fa0cf450c8805dd32693fc8d55000d8e7bda4a1 (diff) | |
| download | linux-stable-08eb17ec3c1b3f0b51b2fa18fcd6cd8e04aa572e.tar.gz linux-stable-08eb17ec3c1b3f0b51b2fa18fcd6cd8e04aa572e.tar.bz2 linux-stable-08eb17ec3c1b3f0b51b2fa18fcd6cd8e04aa572e.zip | |
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/ethernet/qlogic/qed')
| -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 2fa1c050a14b..92cd8abeb41d 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_ll2.c +++ b/drivers/net/ethernet/qlogic/qed/qed_ll2.c @@ -1592,6 +1592,10 @@ 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)); } |