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[RFC,v1,1/7] net/ena: remove duplicate barrier

Message ID 20200313091835.58039-2-gavin.hu@arm.com (mailing list archive)
State RFC, archived
Delegated to: Ferruh Yigit
Headers
Series relax barriers for ENA PMD and small fixes |

Checks

Context Check Description
ci/checkpatch success coding style OK
ci/Intel-compilation fail Compilation issues

Commit Message

Gavin Hu March 13, 2020, 9:18 a.m. UTC 
  As there is necessary barriers before calling the function everywhere,
then using the relaxed write function ENA_REG_WRITE32_RELAXED is ok.

Fixes: 99ecfbf845b3 ("ena: import communication layer")
Cc: stable@dpdk.org

Signed-off-by: Gavin Hu <gavin.hu@arm.com>
Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>
---
 drivers/net/ena/base/ena_eth_com.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/drivers/net/ena/base/ena_eth_com.h b/drivers/net/ena/base/ena_eth_com.h
index e37b642d4..e56c33a64 100644
--- a/drivers/net/ena/base/ena_eth_com.h
+++ b/drivers/net/ena/base/ena_eth_com.h
@@ -156,7 +156,7 @@  static inline int ena_com_write_sq_doorbell(struct ena_com_io_sq *io_sq)
 	ena_trc_dbg("write submission queue doorbell for queue: %d tail: %d\n",
 		    io_sq->qid, tail);
 
-	ENA_REG_WRITE32(io_sq->bus, tail, io_sq->db_addr);
+	ENA_REG_WRITE32_RELAXED(io_sq->bus, tail, io_sq->db_addr);
 
 	if (is_llq_max_tx_burst_exists(io_sq)) {
 		ena_trc_dbg("reset available entries in tx burst for queue %d to %d\n",