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OpenCloudOS-Kernel
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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>
This commit is contained in:
Vladimir Oltean 2020-09-18 04:07:27 +03:00 committed by David S. Miller
parent c9d4b2cf16
commit d1cc0e9320
2 changed files with 8 additions and 2 deletions
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5
drivers/net/dsa/ocelot/felix.c
View File

@ -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) {

5
drivers/net/ethernet/mscc/ocelot_vsc7514.c
View File

@ -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) {