4.17-stable review patch. If anyone has any objections, please let me know.
------------------
From: Govindarajulu Varadarajan <gvaradar@xxxxxxxxx>
[ 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@xxxxxxxxxxxxxxx>
Fixes: e8588e268509 ("enic: enable rq before updating rq descriptors")
Signed-off-by: Govindarajulu Varadarajan <gvaradar@xxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/ethernet/cisco/enic/enic_main.c | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
--- 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 *
{
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 *
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:
