netdev - [PATCH v2] qed: Add cleanup in qed_slowpath

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Message-Id: <1566362796-5399-1-git-send-email-wenwen@cs.uga.edu>
Date:   Tue, 20 Aug 2019 23:46:36 -0500
From:   Wenwen Wang <wenwen@...uga.edu>
To:     Wenwen Wang <wenwen@...uga.edu>
Cc:     Sudarsana Reddy Kalluru <skalluru@...vell.com>,
        Ariel Elior <aelior@...vell.com>,
        GR-everest-linux-l2@...vell.com (supporter:QLOGIC QL4xxx ETHERNET
        DRIVER), "David S. Miller" <davem@...emloft.net>,
        netdev@...r.kernel.org (open list:QLOGIC QL4xxx ETHERNET DRIVER),
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH v2] qed: Add cleanup in qed_slowpath_start()

If qed_mcp_send_drv_version() fails, no cleanup is executed, leading to
memory leaks. To fix this issue, introduce the label 'err4' to perform the
cleanup work before returning the error.

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

diff --git a/drivers/net/ethernet/qlogic/qed/qed_main.c b/drivers/net/ethernet/qlogic/qed/qed_main.c
index 829dd60..1efff7f 100644
--- a/drivers/net/ethernet/qlogic/qed/qed_main.c
+++ b/drivers/net/ethernet/qlogic/qed/qed_main.c
@@ -1325,7 +1325,7 @@ static int qed_slowpath_start(struct qed_dev *cdev,
 					      &drv_version);
 		if (rc) {
 			DP_NOTICE(cdev, "Failed sending drv version command\n");
-			return rc;
+			goto err4;
 		}
 	}
 
@@ -1333,6 +1333,8 @@ static int qed_slowpath_start(struct qed_dev *cdev,
 
 	return 0;
 
+err4:
+	qed_ll2_dealloc_if(cdev);
 err3:
 	qed_hw_stop(cdev);
 err2:
-- 
2.7.4