diff mbox series

[net,5/7] net: mscc: ocelot: error checking when calling ocelot_init()

Message ID 20200915182229.69529-6-olteanv@gmail.com
State Changes Requested
Delegated to: David Miller
Headers show
Series Bugfixes in Microsemi Ocelot switch driver | expand

Commit Message

Vladimir Oltean Sept. 15, 2020, 6:22 p.m. UTC 
From: Vladimir Oltean <vladimir.oltean@nxp.com>

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>
---
 drivers/net/dsa/ocelot/felix.c             | 5 ++++-
 drivers/net/ethernet/mscc/ocelot_vsc7514.c | 5 ++++-
 2 files changed, 8 insertions(+), 2 deletions(-)

Comments

David Miller Sept. 17, 2020, 12:24 a.m. UTC | #1 
From: Vladimir Oltean <olteanv@gmail.com>
Date: Tue, 15 Sep 2020 21:22:27 +0300

> diff --git a/drivers/net/ethernet/mscc/ocelot_vsc7514.c b/drivers/net/ethernet/mscc/ocelot_vsc7514.c
> index 99872f1b7460..91a915d0693f 100644
> --- a/drivers/net/ethernet/mscc/ocelot_vsc7514.c
> +++ b/drivers/net/ethernet/mscc/ocelot_vsc7514.c
> @@ -1000,7 +1000,10 @@ 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)
> +		return err;
> +

This also leaks the OF device 'ports' object.
diff mbox series

Patch

diff --git a/drivers/net/dsa/ocelot/felix.c b/drivers/net/dsa/ocelot/felix.c
index a1e1d3824110..f7b43f8d56ed 100644
--- a/drivers/net/dsa/ocelot/felix.c
+++ b/drivers/net/dsa/ocelot/felix.c
@@ -571,7 +571,10 @@  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 99872f1b7460..91a915d0693f 100644
--- a/drivers/net/ethernet/mscc/ocelot_vsc7514.c
+++ b/drivers/net/ethernet/mscc/ocelot_vsc7514.c
@@ -1000,7 +1000,10 @@  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)
+		return err;
+
 	if (ocelot->ptp) {
 		err = ocelot_init_timestamp(ocelot, &ocelot_ptp_clock_info);
 		if (err) {