liquidio: Avoid double free during soft command

This patch is to resolve the double free issue by checking proper return
values from soft command.

Signed-off-by: Derek Chickles <derek.chickles@caviumnetworks.com>
Signed-off-by: Satanand Burla <satananda.burla@caviumnetworks.com>
Signed-off-by: Felix Manlunas <felix.manlunas@caviumnetworks.com>
Signed-off-by: Raghu Vatsavayi <raghu.vatsavayi@caviumnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/cavium/liquidio/lio_ethtool.c b/drivers/net/ethernet/cavium/liquidio/lio_ethtool.c
index 245c063..1096cdb 100644 (file)
--- a/drivers/net/ethernet/cavium/liquidio/lio_ethtool.c
+++ b/drivers/net/ethernet/cavium/liquidio/lio_ethtool.c
@@ -317,7 +317,7 @@ octnet_mdio45_access(struct lio *lio, int op, int loc, int *value)
 
        retval = octeon_send_soft_command(oct_dev, sc);
 
-       if (retval) {
+       if (retval == IQ_SEND_FAILED) {
                dev_err(&oct_dev->pci_dev->dev,
                        "octnet_mdio45_access instruction failed status: %x\n",
                        retval);
@@ -722,7 +722,7 @@ static int octnet_set_intrmod_cfg(void *oct, struct oct_intrmod_cfg *intr_cfg)
        sc->wait_time = 1000;
 
        retval = octeon_send_soft_command(oct_dev, sc);
-       if (retval) {
+       if (retval == IQ_SEND_FAILED) {
                octeon_free_soft_command(oct_dev, sc);
                return -EINVAL;
        }

diff --git a/drivers/net/ethernet/cavium/liquidio/lio_main.c b/drivers/net/ethernet/cavium/liquidio/lio_main.c
index 655d89e..47fba0e 100644 (file)
--- a/drivers/net/ethernet/cavium/liquidio/lio_main.c
+++ b/drivers/net/ethernet/cavium/liquidio/lio_main.c
@@ -2583,7 +2583,7 @@ static inline int send_nic_timestamp_pkt(struct octeon_device *oct,
        retval = octeon_send_command(oct, sc->iq_no, ring_doorbell, &sc->cmd,
                                     sc, ih->dlengsz, ndata->reqtype);
 
-       if (retval) {
+       if (retval == IQ_SEND_FAILED) {
                dev_err(&oct->pci_dev->dev, "timestamp data packet failed status: %x\n",
                        retval);
                octeon_free_soft_command(oct, sc);
@@ -3192,7 +3192,7 @@ static int setup_nic_devices(struct octeon_device *octeon_dev)
                sc->wait_time = 1000;
 
                retval = octeon_send_soft_command(octeon_dev, sc);
-               if (retval) {
+               if (retval == IQ_SEND_FAILED) {
                        dev_err(&octeon_dev->pci_dev->dev,
                                "iq/oq config failed status: %x\n",
                                retval);

diff --git a/drivers/net/ethernet/cavium/liquidio/octeon_nic.c b/drivers/net/ethernet/cavium/liquidio/octeon_nic.c
index 1a01915..aacabe4 100644 (file)
--- a/drivers/net/ethernet/cavium/liquidio/octeon_nic.c
+++ b/drivers/net/ethernet/cavium/liquidio/octeon_nic.c
@@ -178,7 +178,7 @@ octnet_send_nic_ctrl_pkt(struct octeon_device *oct,
        }
 
        retval = octeon_send_soft_command(oct, sc);
-       if (retval) {
+       if (retval == IQ_SEND_FAILED) {
                octeon_free_soft_command(oct, sc);
                dev_err(&oct->pci_dev->dev, "%s soft command send failed status: %x\n",
                        __func__, retval);