netdev - [PATCH net-next] bnxt_en: cleanup DIM work on device shutdown

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Message-Id: <1516980467-7893-1-git-send-email-andy@greyhouse.net>
Date:   Fri, 26 Jan 2018 10:27:47 -0500
From:   Andy Gospodarek <andy@...yhouse.net>
To:     netdev@...r.kernel.org
Cc:     Andy Gospodarek <gospo@...adcom.com>,
        Michael Chan <michael.chan@...adcom.com>
Subject: [PATCH net-next] bnxt_en: cleanup DIM work on device shutdown

From: Andy Gospodarek <gospo@...adcom.com>

Make sure to cancel any pending work that might update driver coalesce
settings when taking down an interface.

Fixes: 6a8788f25625 ("bnxt_en: add support for software dynamic interrupt moderation")
Signed-off-by: Andy Gospodarek <gospo@...adcom.com>
Cc: Michael Chan <michael.chan@...adcom.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 4b001d2..1500243 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -6082,8 +6082,14 @@ static void bnxt_disable_napi(struct bnxt *bp)
 	if (!bp->bnapi)
 		return;
 
-	for (i = 0; i < bp->cp_nr_rings; i++)
+	for (i = 0; i < bp->cp_nr_rings; i++) {
+		struct bnxt_cp_ring_info *cpr = &bp->bnapi[i]->cp_ring;
+
+		if (bp->bnapi[i]->rx_ring)
+			cancel_work_sync(&cpr->dim.work);
+
 		napi_disable(&bp->bnapi[i]->napi);
+	}
 }
 
 static void bnxt_enable_napi(struct bnxt *bp)
-- 
2.7.4