@@ -1437,7 +1437,9 @@ static int mv88e6xxx_port_db_dump_fid(struct mv88e6xxx_chip *chip,
eth_broadcast_addr(addr.mac);
do {
+ mutex_lock(&chip->reg_lock);
err = mv88e6xxx_g1_atu_getnext(chip, fid, &addr);
+ mutex_unlock(&chip->reg_lock);
if (err)
return err;
@@ -1470,7 +1472,10 @@ static int mv88e6xxx_port_db_dump(struct mv88e6xxx_chip *chip, int port,
int err;
/* Dump port's default Filtering Information Database (VLAN ID 0) */
+ mutex_lock(&chip->reg_lock);
err = mv88e6xxx_port_get_fid(chip, port, &fid);
+ mutex_unlock(&chip->reg_lock);
+
if (err)
return err;
@@ -1480,7 +1485,9 @@ static int mv88e6xxx_port_db_dump(struct mv88e6xxx_chip *chip, int port,
/* Dump VLANs' Filtering Information Databases */
do {
+ mutex_lock(&chip->reg_lock);
err = mv88e6xxx_vtu_getnext(chip, &vlan);
+ mutex_unlock(&chip->reg_lock);
if (err)
return err;
@@ -1500,13 +1507,8 @@ static int mv88e6xxx_port_fdb_dump(struct dsa_switch *ds, int port,
dsa_fdb_dump_cb_t *cb, void *data)
{
struct mv88e6xxx_chip *chip = ds->priv;
- int err;
-
- mutex_lock(&chip->reg_lock);
- err = mv88e6xxx_port_db_dump(chip, port, cb, data);
- mutex_unlock(&chip->reg_lock);
- return err;
+ return mv88e6xxx_port_db_dump(chip, port, cb, data);
}
static int mv88e6xxx_bridge_map(struct mv88e6xxx_chip *chip,
The PTP code needs low latency access to the PTP hardware timestamps. Reading all the ATU entries in one go adds a lot of latency to the PTP code. So take and release the reg_lock mutex for each individual MAC address in the ATU, allowing the PTP thread jump in between. Signed-off-by: Andrew Lunn <andrew@lunn.ch> --- drivers/net/dsa/mv88e6xxx/chip.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-)