[PATCH 01/18] net: dsa: mv88e6xxx: Factor out common initialization code

[Guenter Roeck <linux@roeck-us.net>]

Code used and needed in mv886xxx.c should be initialized there as well,
so factor it out from the individual initialization files.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
---
 drivers/net/dsa/mv88e6123_61_65.c |  7 +++----
 drivers/net/dsa/mv88e6171.c       |  8 +++-----
 drivers/net/dsa/mv88e6352.c       |  7 ++++---
 drivers/net/dsa/mv88e6xxx.c       | 11 +++++++++++
 drivers/net/dsa/mv88e6xxx.h       |  1 +
 5 files changed, 22 insertions(+), 12 deletions(-)

diff --git a/drivers/net/dsa/mv88e6123_61_65.c b/drivers/net/dsa/mv88e6123_61_65.c
index e9c736e..6ebe570 100644
--- a/drivers/net/dsa/mv88e6123_61_65.c
+++ b/drivers/net/dsa/mv88e6123_61_65.c
@@ -293,13 +293,12 @@ static int mv88e6123_61_65_setup_port(struct dsa_switch *ds, int p)
 
 static int mv88e6123_61_65_setup(struct dsa_switch *ds)
 {
-	struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
 	int i;
 	int ret;
 
-	mutex_init(&ps->smi_mutex);
-	mutex_init(&ps->stats_mutex);
-	mutex_init(&ps->phy_mutex);
+	ret = mv88e6xxx_setup_common(ds);
+	if (ret < 0)
+		return ret;
 
 	ret = mv88e6123_61_65_switch_reset(ds);
 	if (ret < 0)
diff --git a/drivers/net/dsa/mv88e6171.c b/drivers/net/dsa/mv88e6171.c
index 9808c86..2f6662c 100644
--- a/drivers/net/dsa/mv88e6171.c
+++ b/drivers/net/dsa/mv88e6171.c
@@ -292,12 +292,12 @@ static int mv88e6171_setup_port(struct dsa_switch *ds, int p)
 
 static int mv88e6171_setup(struct dsa_switch *ds)
 {
-	struct mv88e6xxx_priv_state *ps = (void *)(ds + 1);
 	int i;
 	int ret;
 
-	mutex_init(&ps->smi_mutex);
-	mutex_init(&ps->stats_mutex);
+	ret = mv88e6xxx_setup_common(ds);
+	if (ret < 0)
+		return ret;
 
 	ret = mv88e6171_switch_reset(ds);
 	if (ret < 0)
@@ -318,8 +318,6 @@ static int mv88e6171_setup(struct dsa_switch *ds)
 			return ret;
 	}
 
-	mutex_init(&ps->phy_mutex);
-
 	return 0;
 }
 
diff --git a/drivers/net/dsa/mv88e6352.c b/drivers/net/dsa/mv88e6352.c
index 7bc5998..75cf9e1 100644
--- a/drivers/net/dsa/mv88e6352.c
+++ b/drivers/net/dsa/mv88e6352.c
@@ -385,9 +385,10 @@ static int mv88e6352_setup(struct dsa_switch *ds)
 	int ret;
 	int i;
 
-	mutex_init(&ps->smi_mutex);
-	mutex_init(&ps->stats_mutex);
-	mutex_init(&ps->phy_mutex);
+	ret = mv88e6xxx_setup_common(ds);
+	if (ret < 0)
+		return ret;
+
 	mutex_init(&ps->eeprom_mutex);
 
 	ps->id = REG_READ(REG_PORT(0), 0x03) & 0xfff0;
diff --git a/drivers/net/dsa/mv88e6xxx.c b/drivers/net/dsa/mv88e6xxx.c
index c18ffc9..6496beb 100644
--- a/drivers/net/dsa/mv88e6xxx.c
+++ b/drivers/net/dsa/mv88e6xxx.c
@@ -700,6 +700,17 @@ int mv88e6xxx_set_eee(struct dsa_switch *ds, int port,
 	return 0;
 }
 
+int mv88e6xxx_setup_common(struct dsa_switch *ds)
+{
+	struct mv88e6xxx_priv_state *ps = ds_to_priv(ds);
+
+	mutex_init(&ps->smi_mutex);
+	mutex_init(&ps->stats_mutex);
+	mutex_init(&ps->phy_mutex);
+
+	return 0;
+}
+
 static int __init mv88e6xxx_init(void)
 {
 #if IS_ENABLED(CONFIG_NET_DSA_MV88E6131)
diff --git a/drivers/net/dsa/mv88e6xxx.h b/drivers/net/dsa/mv88e6xxx.h
index 5fd42ce..a02d95a 100644
--- a/drivers/net/dsa/mv88e6xxx.h
+++ b/drivers/net/dsa/mv88e6xxx.h
@@ -57,6 +57,7 @@ struct mv88e6xxx_hw_stat {
 	int reg;
 };
 
+int mv88e6xxx_setup_common(struct dsa_switch *ds);
 int __mv88e6xxx_reg_read(struct mii_bus *bus, int sw_addr, int addr, int reg);
 int mv88e6xxx_reg_read(struct dsa_switch *ds, int addr, int reg);
 int __mv88e6xxx_reg_write(struct mii_bus *bus, int sw_addr, int addr,
-- 
2.1.0