net: mscc: ocelot: error checking when calling ocelot_init()

ocelot_init() allocates memory, resets the switch and polls for a status
register, things which can fail. Stop probing the driver in that case,
and propagate the error result.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Tested-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Reviewed-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/dsa/ocelot/felix.c b/drivers/net/dsa/ocelot/felix.c
index 04bfa6e..66da447 100644 (file)
--- a/drivers/net/dsa/ocelot/felix.c
+++ b/drivers/net/dsa/ocelot/felix.c
@@ -585,7 +585,10 @@ static int felix_setup(struct dsa_switch *ds)
        if (err)
                return err;
 
-       ocelot_init(ocelot);
+       err = ocelot_init(ocelot);
+       if (err)
+               return err;
+
        if (ocelot->ptp) {
                err = ocelot_init_timestamp(ocelot, &ocelot_ptp_clock_info);
                if (err) {

diff --git a/drivers/net/ethernet/mscc/ocelot_vsc7514.c b/drivers/net/ethernet/mscc/ocelot_vsc7514.c
index 904ea29..a1cbb20 100644 (file)
--- a/drivers/net/ethernet/mscc/ocelot_vsc7514.c
+++ b/drivers/net/ethernet/mscc/ocelot_vsc7514.c
@@ -1002,7 +1002,10 @@ static int mscc_ocelot_probe(struct platform_device *pdev)
        ocelot->vcap_is2_actions = vsc7514_vcap_is2_actions;
        ocelot->vcap = vsc7514_vcap_props;
 
-       ocelot_init(ocelot);
+       err = ocelot_init(ocelot);
+       if (err)
+               goto out_put_ports;
+
        if (ocelot->ptp) {
                err = ocelot_init_timestamp(ocelot, &ocelot_ptp_clock_info);
                if (err) {