[PATCH net-next 14/16] net: dsa: sja1105: register switch before assigning port private data

Vivien Didelot
2019-10-20T03:20:58Z

Like the dsa_switch_tree structures, the dsa_port structures will be
allocated on switch registration.

The SJA1105 driver is the only one accessing the dsa_port structure
after the switch allocation and before the switch registration.
For that reason, move switch registration prior to assigning the priv
member of the dsa_port structures.

Signed-off-by: Vivien Didelot <vivien.didelot@gmail.com>
---
drivers/net/dsa/sja1105/sja1105_main.c | 15 ++++++++++-----
1 file changed, 10 insertions(+), 5 deletions(-)

diff --git a/drivers/net/dsa/sja1105/sja1105_main.c b/drivers/net/dsa/sja1105/sja1105_main.c
index 4b0cb779f187..0ebbda5ca665 100644
--- a/drivers/net/dsa/sja1105/sja1105_main.c
+++ b/drivers/net/dsa/sja1105/sja1105_main.c
@@ -2057,6 +2057,15 @@ static int sja1105_probe(struct spi_device *spi)

tagger_data = &priv->tagger_data;

+ mutex_init(&priv->ptp_data.lock);
+ mutex_init(&priv->mgmt_lock);
+
+ sja1105_tas_setup(ds);
+
+ rc = dsa_register_switch(priv->ds);
+ if (rc)
+ return rc;
+
/* Connections between dsa_port and sja1105_port */
for (i = 0; i < SJA1105_NUM_PORTS; i++) {
struct sja1105_port *sp = &priv->ports[i];
@@ -2065,12 +2074,8 @@ static int sja1105_probe(struct spi_device *spi)
sp->dp = dsa_to_port(ds, i);
sp->data = tagger_data;
}
- mutex_init(&priv->ptp_data.lock);
- mutex_init(&priv->mgmt_lock);

- sja1105_tas_setup(ds);
-
- return dsa_register_switch(priv->ds);
+ return 0;
}

static int sja1105_remove(struct spi_device *spi)
--
2.23.0