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From:   Wenwen Wang <wenwen@cs.uga.edu>
To:     Wenwen Wang <wenwen@cs.uga.edu>
Cc:     Derek Chickles <dchickles@marvell.com>,
        Satanand Burla <sburla@marvell.com>,
        Felix Manlunas <fmanlunas@marvell.com>,
        "David S. Miller" <davem@davemloft.net>,
        netdev@vger.kernel.org (open list:CAVIUM LIQUIDIO NETWORK DRIVER),
        linux-kernel@vger.kernel.org (open list)
Subject: [PATCH] liquidio: add cleanup in octeon_setup_iq()
Date:   Wed, 14 Aug 2019 00:14:49 -0500
Message-Id: <1565759689-5941-1-git-send-email-wenwen@cs.uga.edu>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

If oct->fn_list.enable_io_queues() fails, no cleanup is executed, leading
to memory/resource leaks. To fix this issue, invoke
octeon_delete_instr_queue() before returning from the function.

Signed-off-by: Wenwen Wang <wenwen@cs.uga.edu>
---
 drivers/net/ethernet/cavium/liquidio/request_manager.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/cavium/liquidio/request_manager.c b/drivers/net/ethernet/cavium/liquidio/request_manager.c
index 0322241..6dd65f9 100644
--- a/drivers/net/ethernet/cavium/liquidio/request_manager.c
+++ b/drivers/net/ethernet/cavium/liquidio/request_manager.c
@@ -237,8 +237,10 @@ int octeon_setup_iq(struct octeon_device *oct,
 	}
 
 	oct->num_iqs++;
-	if (oct->fn_list.enable_io_queues(oct))
+	if (oct->fn_list.enable_io_queues(oct)) {
+		octeon_delete_instr_queue(oct, iq_no);
 		return 1;
+	}
 
 	return 0;
 }
-- 
2.7.4