enic: do not overwrite error code

[ Upstream commit 56f772279a762984f6e9ebbf24a7c829faba5712 ]

In failure path, we overwrite err to what vnic_rq_disable() returns. In
case it returns 0, enic_open() returns success in case of error.

Reported-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Fixes: e8588e268509 ("enic: enable rq before updating rq descriptors")
Signed-off-by: Govindarajulu Varadarajan <gvaradar@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/net/ethernet/cisco/enic/enic_main.c b/drivers/net/ethernet/cisco/enic/enic_main.c
index 8a8b12b720ef99bb923a3a441c933ee36e596e80..454e57ef047abc1cd3b689460acc1c73767d19de 100644 (file)
--- a/drivers/net/ethernet/cisco/enic/enic_main.c
+++ b/drivers/net/ethernet/cisco/enic/enic_main.c
@@ -1920,7 +1920,7 @@ static int enic_open(struct net_device *netdev)
 {
        struct enic *enic = netdev_priv(netdev);
        unsigned int i;
-       int err;
+       int err, ret;
 
        err = enic_request_intr(enic);
        if (err) {
@@ -1977,10 +1977,9 @@ static int enic_open(struct net_device *netdev)
 
 err_out_free_rq:
        for (i = 0; i < enic->rq_count; i++) {
-               err = vnic_rq_disable(&enic->rq[i]);
-               if (err)
-                       return err;
-               vnic_rq_clean(&enic->rq[i], enic_free_rq_buf);
+               ret = vnic_rq_disable(&enic->rq[i]);
+               if (!ret)
+                       vnic_rq_clean(&enic->rq[i], enic_free_rq_buf);
        }
        enic_dev_notify_unset(enic);
 err_out_free_intr: