From: Somnath Kotur <somnath.kotur@broadcom.com>
Date: Sat, 8 Jun 2019 19:22:04 +0000 (+0400)
Subject: net/bnxt: check for null completion ring doorbell
X-Git-Url: http://git.droids-corp.org/?p=dpdk.git;a=commitdiff_plain;h=2807c5861e31b99295b915b28e121ce059a46416

net/bnxt: check for null completion ring doorbell

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")
Cc: stable@dpdk.org

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>
---

diff --git a/drivers/net/bnxt/bnxt_irq.c b/drivers/net/bnxt/bnxt_irq.c
index 918f3dcf48..0bb3eb4faf 100644
--- a/drivers/net/bnxt/bnxt_irq.c
+++ b/drivers/net/bnxt/bnxt_irq.c
@@ -31,7 +31,7 @@ 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_db.doorbell)
 			return;
 
 		cons = RING_CMP(cpr->cp_ring_struct, raw_cons);