[dpdk-stable] patch 'net/bnxt: check for null completion ring doorbell' has been queued to LTS release 18.11.3

[Kevin Traynor <ktraynor@redhat.com>]

Hi,

FYI, your patch has been queued to LTS release 18.11.3

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 06/27/19. So please
shout if anyone has objections.

Also note that after the patch there's a diff of the upstream commit vs the
patch applied to the branch. This will indicate if there was any rebasing
needed to apply to the stable branch. If there were code changes for rebasing
(ie: not only metadata diffs), please double check that the rebase was
correctly done.

Queued patches are on a temporary branch at:
https://github.com/kevintraynor/dpdk-stable-queue

This queued commit can be viewed at:
https://github.com/kevintraynor/dpdk-stable-queue/commit/0e449f4f13ad7d9c8ff1c241a51b5d41cd03d245

Thanks.

Kevin Traynor

---
From 0e449f4f13ad7d9c8ff1c241a51b5d41cd03d245 Mon Sep 17 00:00:00 2001
From: Somnath Kotur <somnath.kotur@broadcom.com>
Date: Sat, 8 Jun 2019 23:22:04 +0400
Subject: [PATCH] net/bnxt: check for null completion ring doorbell

[ upstream commit 2807c5861e31b99295b915b28e121ce059a46416 ]

It is observed that sometimes during init, the bnxt_int_handler() gets
invoked while the cpr->cp_db.doorbell is not yet initialized. Check for
the same and return.

Fixes: f7ecea911ec5 ("net/bnxt: fix interrupt handler")

Signed-off-by: Somnath Kotur <somnath.kotur@broadcom.com>
Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Signed-off-by: Ajit Khaparde <ajit.khaparde@broadcom.com>
---
 drivers/net/bnxt/bnxt_irq.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/bnxt/bnxt_irq.c b/drivers/net/bnxt/bnxt_irq.c
index e03766b41..e3aac7cbe 100644
--- a/drivers/net/bnxt/bnxt_irq.c
+++ b/drivers/net/bnxt/bnxt_irq.c
@@ -32,5 +32,5 @@ static void bnxt_int_handler(void *param)
 	raw_cons = cpr->cp_raw_cons;
 	while (1) {
-		if (!cpr || !cpr->cp_ring_struct)
+		if (!cpr || !cpr->cp_ring_struct || !cpr->cp_doorbell)
 			return;
 
-- 
2.20.1

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2019-06-24 16:18:56.998750420 +0100
+++ 0037-net-bnxt-check-for-null-completion-ring-doorbell.patch	2019-06-24 16:18:55.067430374 +0100
@@ -1 +1 @@
-From 2807c5861e31b99295b915b28e121ce059a46416 Mon Sep 17 00:00:00 2001
+From 0e449f4f13ad7d9c8ff1c241a51b5d41cd03d245 Mon Sep 17 00:00:00 2001
@@ -5,0 +6,2 @@
+[ upstream commit 2807c5861e31b99295b915b28e121ce059a46416 ]
+
@@ -11 +12,0 @@
-Cc: stable@dpdk.org
@@ -21 +22 @@
-index 918f3dcf4..0bb3eb4fa 100644
+index e03766b41..e3aac7cbe 100644
@@ -28 +29 @@
-+		if (!cpr || !cpr->cp_ring_struct || !cpr->cp_db.doorbell)
++		if (!cpr || !cpr->cp_ring_struct || !cpr->cp_doorbell)