From: Alexandre Belloni <alexandre.belloni@bootlin.com>
To: Vladimir Oltean <olteanv@gmail.com>
Cc: davem@davemloft.net, netdev@vger.kernel.org, yangbo.lu@nxp.com,
xiaoliang.yang_1@nxp.com, UNGLinuxDriver@microchip.com,
claudiu.manoil@nxp.com, andrew@lunn.ch, vivien.didelot@gmail.com,
f.fainelli@gmail.com, kuba@kernel.org
Subject: Re: [PATCH v2 net 5/8] net: mscc: ocelot: error checking when calling ocelot_init()
Date: Fri, 18 Sep 2020 17:28:26 +0200 [thread overview]
Message-ID: <20200918152826.GB9675@piout.net> (raw)
In-Reply-To: <20200918010730.2911234-6-olteanv@gmail.com>
On 18/09/2020 04:07:27+0300, Vladimir Oltean wrote:
> 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>
> Reviewed-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Tested-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Reviewed-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
> ---
> Changes in v2:
> Stopped leaking the 'ports' OF node in the VSC7514 driver.
>
> drivers/net/dsa/ocelot/felix.c | 5 ++++-
> drivers/net/ethernet/mscc/ocelot_vsc7514.c | 5 ++++-
> 2 files changed, 8 insertions(+), 2 deletions(-)
>
> 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 904ea299a5e8..a1cbb20a7757 100644
> --- 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) {
> --
> 2.25.1
>
--
Alexandre Belloni, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
next prev parent reply other threads:[~2020-09-18 16:10 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-18 1:07 [PATCH v2 net 0/8] Bugfixes in Microsemi Ocelot switch driver Vladimir Oltean
2020-09-18 1:07 ` [PATCH v2 net 1/8] net: mscc: ocelot: fix race condition with TX timestamping Vladimir Oltean
2020-09-18 15:23 ` Alexandre Belloni
2020-09-18 15:24 ` Alexandre Belloni
2020-09-18 15:24 ` Alexandre Belloni
2020-09-18 15:24 ` Alexandre Belloni
2020-09-18 15:24 ` Alexandre Belloni
2020-09-18 15:25 ` Alexandre Belloni
2020-09-18 15:25 ` Alexandre Belloni
2020-09-18 15:26 ` Alexandre Belloni
2020-09-18 15:27 ` Alexandre Belloni
2020-09-18 1:07 ` [PATCH v2 net 2/8] net: mscc: ocelot: add locking for the port TX timestamp ID Vladimir Oltean
2020-09-18 2:37 ` Florian Fainelli
2020-09-18 15:27 ` Alexandre Belloni
2020-09-18 1:07 ` [PATCH v2 net 3/8] net: dsa: seville: fix buffer size of the queue system Vladimir Oltean
2020-09-18 2:37 ` Florian Fainelli
2020-09-18 15:27 ` Alexandre Belloni
2020-09-18 1:07 ` [PATCH v2 net 4/8] net: mscc: ocelot: check for errors on memory allocation of ports Vladimir Oltean
2020-09-18 2:35 ` Florian Fainelli
2020-09-18 15:27 ` Alexandre Belloni
2020-09-18 1:07 ` [PATCH v2 net 5/8] net: mscc: ocelot: error checking when calling ocelot_init() Vladimir Oltean
2020-09-18 2:35 ` Florian Fainelli
2020-09-18 15:28 ` Alexandre Belloni [this message]
2020-09-18 1:07 ` [PATCH v2 net 6/8] net: mscc: ocelot: refactor ports parsing code into a dedicated function Vladimir Oltean
2020-09-18 2:34 ` Florian Fainelli
2020-09-18 15:28 ` Alexandre Belloni
2020-09-18 1:07 ` [PATCH v2 net 7/8] net: mscc: ocelot: unregister net devices on unbind Vladimir Oltean
2020-09-18 2:34 ` Florian Fainelli
2020-09-18 15:28 ` Alexandre Belloni
2020-09-18 1:07 ` [PATCH v2 net 8/8] net: mscc: ocelot: deinitialize only initialized ports Vladimir Oltean
2020-09-18 2:36 ` Florian Fainelli
2020-09-18 15:29 ` Alexandre Belloni
2020-09-18 20:52 ` [PATCH v2 net 0/8] Bugfixes in Microsemi Ocelot switch driver David Miller
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