netdev - [PATCH net 3/6] bnxt_en: Disable RDMA support on the 57500 chips.

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Message-Id: <1542270342-18361-4-git-send-email-michael.chan@broadcom.com>
Date:   Thu, 15 Nov 2018 03:25:39 -0500
From:   Michael Chan <michael.chan@...adcom.com>
To:     davem@...emloft.net
Cc:     netdev@...r.kernel.org
Subject: [PATCH net 3/6] bnxt_en: Disable RDMA support on the 57500 chips.

There is no RDMA support on 57500 chips yet, so prevent bnxt_re from
registering on these chips.  There is intermittent failure if bnxt_re
is allowed to register and proceed with RDMA operations.

Fixes: 1ab968d2f1d6 ("bnxt_en: Add PCI ID for BCM57508 device.")
Signed-off-by: Michael Chan <michael.chan@...adcom.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c b/drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c
index beee612..b59b382 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_ulp.c
@@ -43,6 +43,9 @@ static int bnxt_register_dev(struct bnxt_en_dev *edev, int ulp_id,
 	if (ulp_id == BNXT_ROCE_ULP) {
 		unsigned int max_stat_ctxs;

+		if (bp->flags & BNXT_FLAG_CHIP_P5)
+			return -EOPNOTSUPP;
+
 		max_stat_ctxs = bnxt_get_max_func_stat_ctxs(bp);
 		if (max_stat_ctxs <= BNXT_MIN_ROCE_STAT_CTXS ||
 		    bp->num_stat_ctxs == max_stat_ctxs)
-- 
2.5.1