netdev - [PATCH net v3 2/4] bnxt: disable napi before canceling DIM

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Date:   Thu, 12 Aug 2021 14:42:40 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     davem@...emloft.net
Cc:     netdev@...r.kernel.org, michael.chan@...adcom.com,
        prashant@...adcom.com, eddie.wai@...adcom.com,
        huangjw@...adcom.com, gospo@...adcom.com, edwin.peer@...adcom.com,
        Jakub Kicinski <kuba@...nel.org>
Subject: [PATCH net v3 2/4] bnxt: disable napi before canceling DIM

napi schedules DIM, napi has to be disabled first,
then DIM canceled.

Noticed while reading the code.

Fixes: 0bc0b97fca73 ("bnxt_en: cleanup DIM work on device shutdown")
Fixes: 6a8788f25625 ("bnxt_en: add support for software dynamic interrupt moderation")
Signed-off-by: Jakub Kicinski <kuba@...nel.org>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 84aa25875050..721b5df36311 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -9134,10 +9134,9 @@ static void bnxt_disable_napi(struct bnxt *bp)
 	for (i = 0; i < bp->cp_nr_rings; i++) {
 		struct bnxt_cp_ring_info *cpr = &bp->bnapi[i]->cp_ring;
 
+		napi_disable(&bp->bnapi[i]->napi);
 		if (bp->bnapi[i]->rx_ring)
 			cancel_work_sync(&cpr->dim.work);
-
-		napi_disable(&bp->bnapi[i]->napi);
 	}
 }
 
-- 
2.31.1