[PATCH net-next v2 0/4] net: dsa: Preparatory patches for pdata

[PATCH net-next v2 0/4] net: dsa: Preparatory patches for pdata

[Florian Fainelli]

Hi all,

This is a resend of the patches that just clean up and prepare net/dsa/dsa2.c
to support platform data in the future.

Florian Fainelli (4):
  net: dsa: Pass device pointer to dsa_register_switch
  net: dsa: Make most functions take a dsa_port argument
  net: dsa: Suffix function manipulating device_node with _dn
  net: dsa: Move ports assignment closer to error checking

 drivers/net/dsa/b53/b53_common.c |  2 +-
 drivers/net/dsa/mv88e6xxx/chip.c |  7 ++--
 include/net/dsa.h                |  2 +-
 net/dsa/dsa.c                    | 14 ++++---
 net/dsa/dsa2.c                   | 87 ++++++++++++++++++++++------------------
 net/dsa/dsa_priv.h               |  4 +-
 6 files changed, 62 insertions(+), 54 deletions(-)

-- 
2.7.4

[PATCH net-next v2 1/4] net: dsa: Pass device pointer to dsa_register_switch

[Florian Fainelli]

In preparation for allowing dsa_register_switch() to be supplied with
device/platform data, pass down a struct device pointer instead of a
struct device_node.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
---
 drivers/net/dsa/b53/b53_common.c | 2 +-
 drivers/net/dsa/mv88e6xxx/chip.c | 7 +++----
 include/net/dsa.h                | 2 +-
 net/dsa/dsa2.c                   | 7 ++++---
 4 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c
index 444de66667b9..e5799a68cfc8 100644
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -1778,7 +1778,7 @@ int b53_switch_register(struct b53_device *dev)
 
 	pr_info("found switch: %s, rev %i\n", dev->name, dev->core_rev);
 
-	return dsa_register_switch(dev->ds, dev->ds->dev->of_node);
+	return dsa_register_switch(dev->ds, dev->ds->dev);
 }
 EXPORT_SYMBOL(b53_switch_register);
 
diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index 5cb06f7673af..11617c04cd33 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -3848,8 +3848,7 @@ static struct dsa_switch_driver mv88e6xxx_switch_driver = {
 	.port_fdb_dump          = mv88e6xxx_port_fdb_dump,
 };
 
-static int mv88e6xxx_register_switch(struct mv88e6xxx_chip *chip,
-				     struct device_node *np)
+static int mv88e6xxx_register_switch(struct mv88e6xxx_chip *chip)
 {
 	struct device *dev = chip->dev;
 	struct dsa_switch *ds;
@@ -3864,7 +3863,7 @@ static int mv88e6xxx_register_switch(struct mv88e6xxx_chip *chip,
 
 	dev_set_drvdata(dev, ds);
 
-	return dsa_register_switch(ds, np);
+	return dsa_register_switch(ds, dev);
 }
 
 static void mv88e6xxx_unregister_switch(struct mv88e6xxx_chip *chip)
@@ -3911,7 +3910,7 @@ static int mv88e6xxx_probe(struct mdio_device *mdiodev)
 	if (err)
 		return err;
 
-	err = mv88e6xxx_register_switch(chip, np);
+	err = mv88e6xxx_register_switch(chip);
 	if (err) {
 		mv88e6xxx_mdio_unregister(chip);
 		return err;
diff --git a/include/net/dsa.h b/include/net/dsa.h
index 20b3087ad193..6de162c8283e 100644
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -381,5 +381,5 @@ static inline bool dsa_uses_tagged_protocol(struct dsa_switch_tree *dst)
 }
 
 void dsa_unregister_switch(struct dsa_switch *ds);
-int dsa_register_switch(struct dsa_switch *ds, struct device_node *np);
+int dsa_register_switch(struct dsa_switch *ds, struct device *dev);
 #endif
diff --git a/net/dsa/dsa2.c b/net/dsa/dsa2.c
index 83b95fc4cede..0940a0ec83e6 100644
--- a/net/dsa/dsa2.c
+++ b/net/dsa/dsa2.c
@@ -590,8 +590,9 @@ static struct device_node *dsa_get_ports(struct dsa_switch *ds,
 	return ports;
 }
 
-static int _dsa_register_switch(struct dsa_switch *ds, struct device_node *np)
+static int _dsa_register_switch(struct dsa_switch *ds, struct device *dev)
 {
+	struct device_node *np = dev->of_node;
 	struct device_node *ports = dsa_get_ports(ds, np);
 	struct dsa_switch_tree *dst;
 	u32 tree, index;
@@ -660,12 +661,12 @@ out:
 	return err;
 }
 
-int dsa_register_switch(struct dsa_switch *ds, struct device_node *np)
+int dsa_register_switch(struct dsa_switch *ds, struct device *dev)
 {
 	int err;
 
 	mutex_lock(&dsa2_mutex);
-	err = _dsa_register_switch(ds, np);
+	err = _dsa_register_switch(ds, dev);
 	mutex_unlock(&dsa2_mutex);
 
 	return err;
-- 
2.7.4

Re: [PATCH net-next v2 1/4] net: dsa: Pass device pointer to dsa_register_switch

[Andrew Lunn]

On Tue, Jul 05, 2016 at 03:07:10PM -0700, Florian Fainelli wrote:
> In preparation for allowing dsa_register_switch() to be supplied with
> device/platform data, pass down a struct device pointer instead of a
> struct device_node.
> 
> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>

Reviewed-by: Andrew Lunn <andrew@lunn.ch>

    Andrew

[PATCH net-next v2 2/4] net: dsa: Make most functions take a dsa_port argument

[Florian Fainelli]

In preparation for allowing platform data, and therefore no valid
device_node pointer, make most DSA functions takes a pointer to a
dsa_port structure whenever possible. While at it, introduce a
dsa_port_is_valid() helper function which checks whether port->dn is
NULL or not at the moment.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
---
 net/dsa/dsa.c      | 14 +++++++------
 net/dsa/dsa2.c     | 61 +++++++++++++++++++++++++++++-------------------------
 net/dsa/dsa_priv.h |  4 ++--
 3 files changed, 43 insertions(+), 36 deletions(-)

diff --git a/net/dsa/dsa.c b/net/dsa/dsa.c
index 766d2a525ada..d117580a78b6 100644
--- a/net/dsa/dsa.c
+++ b/net/dsa/dsa.c
@@ -208,8 +208,9 @@ __ATTRIBUTE_GROUPS(dsa_hwmon);
 
 /* basic switch operations **************************************************/
 int dsa_cpu_dsa_setup(struct dsa_switch *ds, struct device *dev,
-		      struct device_node *port_dn, int port)
+		      struct dsa_port *dport, int port)
 {
+	struct device_node *port_dn = dport->dn;
 	struct phy_device *phydev;
 	int ret, mode;
 
@@ -237,15 +238,15 @@ int dsa_cpu_dsa_setup(struct dsa_switch *ds, struct device *dev,
 
 static int dsa_cpu_dsa_setups(struct dsa_switch *ds, struct device *dev)
 {
-	struct device_node *port_dn;
+	struct dsa_port *dport;
 	int ret, port;
 
 	for (port = 0; port < DSA_MAX_PORTS; port++) {
 		if (!(dsa_is_cpu_port(ds, port) || dsa_is_dsa_port(ds, port)))
 			continue;
 
-		port_dn = ds->ports[port].dn;
-		ret = dsa_cpu_dsa_setup(ds, dev, port_dn, port);
+		dport = &ds->ports[port];
+		ret = dsa_cpu_dsa_setup(ds, dev, dport, port);
 		if (ret)
 			return ret;
 	}
@@ -494,8 +495,9 @@ dsa_switch_setup(struct dsa_switch_tree *dst, int index,
 	return ds;
 }
 
-void dsa_cpu_dsa_destroy(struct device_node *port_dn)
+void dsa_cpu_dsa_destroy(struct dsa_port *port)
 {
+	struct device_node *port_dn = port->dn;
 	struct phy_device *phydev;
 
 	if (of_phy_is_fixed_link(port_dn)) {
@@ -531,7 +533,7 @@ static void dsa_switch_destroy(struct dsa_switch *ds)
 	for (port = 0; port < DSA_MAX_PORTS; port++) {
 		if (!(dsa_is_cpu_port(ds, port) || dsa_is_dsa_port(ds, port)))
 			continue;
-		dsa_cpu_dsa_destroy(ds->ports[port].dn);
+		dsa_cpu_dsa_destroy(&ds->ports[port]);
 
 		/* Clearing a bit which is not set does no harm */
 		ds->cpu_port_mask |= ~(1 << port);
diff --git a/net/dsa/dsa2.c b/net/dsa/dsa2.c
index 0940a0ec83e6..3a782ceef716 100644
--- a/net/dsa/dsa2.c
+++ b/net/dsa/dsa2.c
@@ -77,11 +77,16 @@ static void dsa_dst_del_ds(struct dsa_switch_tree *dst,
 	kref_put(&dst->refcount, dsa_free_dst);
 }
 
-static bool dsa_port_is_dsa(struct device_node *port)
+static bool dsa_port_is_valid(struct dsa_port *port)
+{
+	return !!port->dn;
+}
+
+static bool dsa_port_is_dsa(struct dsa_port *port)
 {
 	const char *name;
 
-	name = of_get_property(port, "label", NULL);
+	name = of_get_property(port->dn, "label", NULL);
 	if (!name)
 		return false;
 
@@ -91,11 +96,11 @@ static bool dsa_port_is_dsa(struct device_node *port)
 	return false;
 }
 
-static bool dsa_port_is_cpu(struct device_node *port)
+static bool dsa_port_is_cpu(struct dsa_port *port)
 {
 	const char *name;
 
-	name = of_get_property(port, "label", NULL);
+	name = of_get_property(port->dn, "label", NULL);
 	if (!name)
 		return false;
 
@@ -136,7 +141,7 @@ static struct dsa_switch *dsa_dst_find_port(struct dsa_switch_tree *dst,
 
 static int dsa_port_complete(struct dsa_switch_tree *dst,
 			     struct dsa_switch *src_ds,
-			     struct device_node *port,
+			     struct dsa_port *port,
 			     u32 src_port)
 {
 	struct device_node *link;
@@ -144,7 +149,7 @@ static int dsa_port_complete(struct dsa_switch_tree *dst,
 	struct dsa_switch *dst_ds;
 
 	for (index = 0;; index++) {
-		link = of_parse_phandle(port, "link", index);
+		link = of_parse_phandle(port->dn, "link", index);
 		if (!link)
 			break;
 
@@ -167,13 +172,13 @@ static int dsa_port_complete(struct dsa_switch_tree *dst,
  */
 static int dsa_ds_complete(struct dsa_switch_tree *dst, struct dsa_switch *ds)
 {
-	struct device_node *port;
+	struct dsa_port *port;
 	u32 index;
 	int err;
 
 	for (index = 0; index < DSA_MAX_PORTS; index++) {
-		port = ds->ports[index].dn;
-		if (!port)
+		port = &ds->ports[index];
+		if (!dsa_port_is_valid(port))
 			continue;
 
 		if (!dsa_port_is_dsa(port))
@@ -213,7 +218,7 @@ static int dsa_dst_complete(struct dsa_switch_tree *dst)
 	return 0;
 }
 
-static int dsa_dsa_port_apply(struct device_node *port, u32 index,
+static int dsa_dsa_port_apply(struct dsa_port *port, u32 index,
 			      struct dsa_switch *ds)
 {
 	int err;
@@ -228,13 +233,13 @@ static int dsa_dsa_port_apply(struct device_node *port, u32 index,
 	return 0;
 }
 
-static void dsa_dsa_port_unapply(struct device_node *port, u32 index,
+static void dsa_dsa_port_unapply(struct dsa_port *port, u32 index,
 				 struct dsa_switch *ds)
 {
 	dsa_cpu_dsa_destroy(port);
 }
 
-static int dsa_cpu_port_apply(struct device_node *port, u32 index,
+static int dsa_cpu_port_apply(struct dsa_port *port, u32 index,
 			      struct dsa_switch *ds)
 {
 	int err;
@@ -251,7 +256,7 @@ static int dsa_cpu_port_apply(struct device_node *port, u32 index,
 	return 0;
 }
 
-static void dsa_cpu_port_unapply(struct device_node *port, u32 index,
+static void dsa_cpu_port_unapply(struct dsa_port *port, u32 index,
 				 struct dsa_switch *ds)
 {
 	dsa_cpu_dsa_destroy(port);
@@ -259,13 +264,13 @@ static void dsa_cpu_port_unapply(struct device_node *port, u32 index,
 
 }
 
-static int dsa_user_port_apply(struct device_node *port, u32 index,
+static int dsa_user_port_apply(struct dsa_port *port, u32 index,
 			       struct dsa_switch *ds)
 {
 	const char *name;
 	int err;
 
-	name = of_get_property(port, "label", NULL);
+	name = of_get_property(port->dn, "label", NULL);
 
 	err = dsa_slave_create(ds, ds->dev, index, name);
 	if (err) {
@@ -277,7 +282,7 @@ static int dsa_user_port_apply(struct device_node *port, u32 index,
 	return 0;
 }
 
-static void dsa_user_port_unapply(struct device_node *port, u32 index,
+static void dsa_user_port_unapply(struct dsa_port *port, u32 index,
 				  struct dsa_switch *ds)
 {
 	if (ds->ports[index].netdev) {
@@ -289,7 +294,7 @@ static void dsa_user_port_unapply(struct device_node *port, u32 index,
 
 static int dsa_ds_apply(struct dsa_switch_tree *dst, struct dsa_switch *ds)
 {
-	struct device_node *port;
+	struct dsa_port *port;
 	u32 index;
 	int err;
 
@@ -325,8 +330,8 @@ static int dsa_ds_apply(struct dsa_switch_tree *dst, struct dsa_switch *ds)
 	}
 
 	for (index = 0; index < DSA_MAX_PORTS; index++) {
-		port = ds->ports[index].dn;
-		if (!port)
+		port = &ds->ports[index];
+		if (!dsa_port_is_valid(port))
 			continue;
 
 		if (dsa_port_is_dsa(port)) {
@@ -353,12 +358,12 @@ static int dsa_ds_apply(struct dsa_switch_tree *dst, struct dsa_switch *ds)
 
 static void dsa_ds_unapply(struct dsa_switch_tree *dst, struct dsa_switch *ds)
 {
-	struct device_node *port;
+	struct dsa_port *port;
 	u32 index;
 
 	for (index = 0; index < DSA_MAX_PORTS; index++) {
-		port = ds->ports[index].dn;
-		if (!port)
+		port = &ds->ports[index];
+		if (!dsa_port_is_valid(port))
 			continue;
 
 		if (dsa_port_is_dsa(port)) {
@@ -439,14 +444,14 @@ static void dsa_dst_unapply(struct dsa_switch_tree *dst)
 	dst->applied = false;
 }
 
-static int dsa_cpu_parse(struct device_node *port, u32 index,
+static int dsa_cpu_parse(struct dsa_port *port, u32 index,
 			 struct dsa_switch_tree *dst,
 			 struct dsa_switch *ds)
 {
 	struct net_device *ethernet_dev;
 	struct device_node *ethernet;
 
-	ethernet = of_parse_phandle(port, "ethernet", 0);
+	ethernet = of_parse_phandle(port->dn, "ethernet", 0);
 	if (!ethernet)
 		return -EINVAL;
 
@@ -478,13 +483,13 @@ static int dsa_cpu_parse(struct device_node *port, u32 index,
 
 static int dsa_ds_parse(struct dsa_switch_tree *dst, struct dsa_switch *ds)
 {
-	struct device_node *port;
+	struct dsa_port *port;
 	u32 index;
 	int err;
 
 	for (index = 0; index < DSA_MAX_PORTS; index++) {
-		port = ds->ports[index].dn;
-		if (!port)
+		port = &ds->ports[index];
+		if (!dsa_port_is_valid(port))
 			continue;
 
 		if (dsa_port_is_cpu(port)) {
@@ -545,7 +550,7 @@ static int dsa_parse_ports_dn(struct device_node *ports, struct dsa_switch *ds)
 		 * to have access to a correct value, just like what
 		 * net/dsa/dsa.c::dsa_switch_setup_one does.
 		 */
-		if (!dsa_port_is_cpu(port))
+		if (!dsa_port_is_cpu(&ds->ports[reg]))
 			ds->enabled_port_mask |= 1 << reg;
 	}
 
diff --git a/net/dsa/dsa_priv.h b/net/dsa/dsa_priv.h
index 00077a9c97f4..3dbc9ce10ab0 100644
--- a/net/dsa/dsa_priv.h
+++ b/net/dsa/dsa_priv.h
@@ -51,8 +51,8 @@ struct dsa_slave_priv {
 /* dsa.c */
 extern char dsa_driver_version[];
 int dsa_cpu_dsa_setup(struct dsa_switch *ds, struct device *dev,
-		      struct device_node *port_dn, int port);
-void dsa_cpu_dsa_destroy(struct device_node *port_dn);
+		      struct dsa_port *dport, int port);
+void dsa_cpu_dsa_destroy(struct dsa_port *dport);
 const struct dsa_device_ops *dsa_resolve_tag_protocol(int tag_protocol);
 int dsa_cpu_port_ethtool_setup(struct dsa_switch *ds);
 void dsa_cpu_port_ethtool_restore(struct dsa_switch *ds);
-- 
2.7.4

Re: [PATCH net-next v2 2/4] net: dsa: Make most functions take a dsa_port argument

[Andrew Lunn]

On Tue, Jul 05, 2016 at 03:07:11PM -0700, Florian Fainelli wrote:
> In preparation for allowing platform data, and therefore no valid
> device_node pointer, make most DSA functions takes a pointer to a
> dsa_port structure whenever possible. While at it, introduce a
> dsa_port_is_valid() helper function which checks whether port->dn is
> NULL or not at the moment.
> 
> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>

Reviewed-by: Andrew Lunn <andrew@lunn.ch>

    Andrew

[PATCH net-next v2 3/4] net: dsa: Suffix function manipulating device_node with _dn

[Florian Fainelli]

Make it clear that these functions take a device_node structure pointer

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
---
 net/dsa/dsa2.c | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/net/dsa/dsa2.c b/net/dsa/dsa2.c
index 3a782ceef716..bdde5d217326 100644
--- a/net/dsa/dsa2.c
+++ b/net/dsa/dsa2.c
@@ -110,8 +110,8 @@ static bool dsa_port_is_cpu(struct dsa_port *port)
 	return false;
 }
 
-static bool dsa_ds_find_port(struct dsa_switch *ds,
-			     struct device_node *port)
+static bool dsa_ds_find_port_dn(struct dsa_switch *ds,
+				struct device_node *port)
 {
 	u32 index;
 
@@ -121,8 +121,8 @@ static bool dsa_ds_find_port(struct dsa_switch *ds,
 	return false;
 }
 
-static struct dsa_switch *dsa_dst_find_port(struct dsa_switch_tree *dst,
-					    struct device_node *port)
+static struct dsa_switch *dsa_dst_find_port_dn(struct dsa_switch_tree *dst,
+					       struct device_node *port)
 {
 	struct dsa_switch *ds;
 	u32 index;
@@ -132,7 +132,7 @@ static struct dsa_switch *dsa_dst_find_port(struct dsa_switch_tree *dst,
 		if (!ds)
 			continue;
 
-		if (dsa_ds_find_port(ds, port))
+		if (dsa_ds_find_port_dn(ds, port))
 			return ds;
 	}
 
@@ -153,7 +153,7 @@ static int dsa_port_complete(struct dsa_switch_tree *dst,
 		if (!link)
 			break;
 
-		dst_ds = dsa_dst_find_port(dst, link);
+		dst_ds = dsa_dst_find_port_dn(dst, link);
 		of_node_put(link);
 
 		if (!dst_ds)
@@ -557,7 +557,7 @@ static int dsa_parse_ports_dn(struct device_node *ports, struct dsa_switch *ds)
 	return 0;
 }
 
-static int dsa_parse_member(struct device_node *np, u32 *tree, u32 *index)
+static int dsa_parse_member_dn(struct device_node *np, u32 *tree, u32 *index)
 {
 	int err;
 
@@ -603,7 +603,7 @@ static int _dsa_register_switch(struct dsa_switch *ds, struct device *dev)
 	u32 tree, index;
 	int err;
 
-	err = dsa_parse_member(np, &tree, &index);
+	err = dsa_parse_member_dn(np, &tree, &index);
 	if (err)
 		return err;
 
-- 
2.7.4

Re: [PATCH net-next v2 3/4] net: dsa: Suffix function manipulating device_node with _dn

[Andrew Lunn]

On Tue, Jul 05, 2016 at 03:07:12PM -0700, Florian Fainelli wrote:
> Make it clear that these functions take a device_node structure pointer

Hi Florian

Didn't we agree that we would only support a single device via a C
coded platform data structure?

All the functions you are renaming will never be called in that
case. So i think they can retain there names. You have no need to add
none device node equivalents.

So lets drop this patch.

   Andrew

Re: [PATCH net-next v2 3/4] net: dsa: Suffix function manipulating device_node with _dn

[Florian Fainelli]

On 07/05/2016 03:36 PM, Andrew Lunn wrote:
> On Tue, Jul 05, 2016 at 03:07:12PM -0700, Florian Fainelli wrote:
>> Make it clear that these functions take a device_node structure pointer
> 
> Hi Florian
> 
> Didn't we agree that we would only support a single device via a C
> coded platform data structure?

That is true for the devices I know about, both in and out of tree,
however, while discussing offline with Vivien it seemed like there was a
potential need for having a x86-based platform which could need that,
Vivien do you think this platform could be in-tree one day (if not already)?

> 
> All the functions you are renaming will never be called in that
> case. So i think they can retain there names. You have no need to add
> none device node equivalents.
> 
> So lets drop this patch.
> 
>    Andrew
> 


-- 
Florian

Re: [PATCH net-next v2 3/4] net: dsa: Suffix function manipulating device_node with _dn

[Andrew Lunn]

> That is true for the devices I know about, both in and out of tree,
> however, while discussing offline with Vivien it seemed like there was a
> potential need for having a x86-based platform which could need that,
> Vivien do you think this platform could be in-tree one day (if not already)?

x86 can do device tree. And if it is a complex board, it probably
needs more of the device tree features like fixed-phys, phy-mode,
devlink when it lands, etc.

If this board really does come to mainline, we should consider support
for it, one way or the other, but until then, i prefer KISS.

   Andrew

Re: [PATCH net-next v2 3/4] net: dsa: Suffix function manipulating device_node with _dn

[Vivien Didelot]

Hi,

Florian Fainelli <f.fainelli@gmail.com> writes:

> On 07/05/2016 03:36 PM, Andrew Lunn wrote:
>> On Tue, Jul 05, 2016 at 03:07:12PM -0700, Florian Fainelli wrote:
>>> Make it clear that these functions take a device_node structure pointer
>> 
>> Hi Florian
>> 
>> Didn't we agree that we would only support a single device via a C
>> coded platform data structure?
>
> That is true for the devices I know about, both in and out of tree,
> however, while discussing offline with Vivien it seemed like there was a
> potential need for having a x86-based platform which could need that,
> Vivien do you think this platform could be in-tree one day (if not already)?

This customer platform is not mainlined yet and I cannot say today if it
will be. However it is likely to get a new revision soon with 3
interconnected 6352 hanging the x86 Baytrail.

DT on x86 is possible, but not straight-forward, and thanks to Florian's
work the pdata support is almost there for free.

>> All the functions you are renaming will never be called in that
>> case. So i think they can retain there names. You have no need to add
>> none device node equivalents.
>> 
>> So lets drop this patch.

The patch is not big and I think it doesn't hurt to add that explicit
suffix, I'd keep the patch in the series.

Thanks,

        Vivien

Re: [PATCH net-next v2 3/4] net: dsa: Suffix function manipulating device_node with _dn

[Florian Fainelli]

On 07/05/2016 06:59 PM, Vivien Didelot wrote:
> Hi,
> 
> Florian Fainelli <f.fainelli@gmail.com> writes:
> 
>> On 07/05/2016 03:36 PM, Andrew Lunn wrote:
>>> On Tue, Jul 05, 2016 at 03:07:12PM -0700, Florian Fainelli wrote:
>>>> Make it clear that these functions take a device_node structure pointer
>>>
>>> Hi Florian
>>>
>>> Didn't we agree that we would only support a single device via a C
>>> coded platform data structure?
>>
>> That is true for the devices I know about, both in and out of tree,
>> however, while discussing offline with Vivien it seemed like there was a
>> potential need for having a x86-based platform which could need that,
>> Vivien do you think this platform could be in-tree one day (if not already)?
> 
> This customer platform is not mainlined yet and I cannot say today if it
> will be. However it is likely to get a new revision soon with 3
> interconnected 6352 hanging the x86 Baytrail.
> 
> DT on x86 is possible, but not straight-forward, and thanks to Florian's
> work the pdata support is almost there for free.
> 
>>> All the functions you are renaming will never be called in that
>>> case. So i think they can retain there names. You have no need to add
>>> none device node equivalents.
>>>
>>> So lets drop this patch.
> 
> The patch is not big and I think it doesn't hurt to add that explicit
> suffix, I'd keep the patch in the series.

Either way is fine with me really, we can drop this patch, add it later,
not add it, up to you guys. I think the 3 others could go in as they are
pretty self contained, your call David.
-- 
Florian

[PATCH net-next v2 4/4] net: dsa: Move ports assignment closer to error checking

[Florian Fainelli]

Move the assignment of ports in _dsa_register_switch() closer to where
it is checked, no functional change. Re-order declarations to be
preserve the inverted christmas tree style.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
---
 net/dsa/dsa2.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/net/dsa/dsa2.c b/net/dsa/dsa2.c
index bdde5d217326..a565bd919aa3 100644
--- a/net/dsa/dsa2.c
+++ b/net/dsa/dsa2.c
@@ -598,8 +598,8 @@ static struct device_node *dsa_get_ports(struct dsa_switch *ds,
 static int _dsa_register_switch(struct dsa_switch *ds, struct device *dev)
 {
 	struct device_node *np = dev->of_node;
-	struct device_node *ports = dsa_get_ports(ds, np);
 	struct dsa_switch_tree *dst;
+	struct device_node *ports;
 	u32 tree, index;
 	int err;
 
@@ -607,6 +607,7 @@ static int _dsa_register_switch(struct dsa_switch *ds, struct device *dev)
 	if (err)
 		return err;
 
+	ports = dsa_get_ports(ds, np);
 	if (IS_ERR(ports))
 		return PTR_ERR(ports);
 
-- 
2.7.4

Re: [PATCH net-next v2 4/4] net: dsa: Move ports assignment closer to error checking

[Andrew Lunn]

On Tue, Jul 05, 2016 at 03:07:13PM -0700, Florian Fainelli wrote:
> Move the assignment of ports in _dsa_register_switch() closer to where
> it is checked, no functional change. Re-order declarations to be
> preserve the inverted christmas tree style.
> 
> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>

Reviewed-by: Andrew Lunn <andrew@lunn.ch>

    Andrew

Re: [PATCH net-next v2 4/4] net: dsa: Move ports assignment closer to error checking

[Sergei Shtylyov]

Hello.

On 7/6/2016 1:07 AM, Florian Fainelli wrote:

> Move the assignment of ports in _dsa_register_switch() closer to where
> it is checked, no functional change. Re-order declarations to be

    "Be" doesn't seem needed here.

> preserve the inverted christmas tree style.
>
> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>

[...]

MBR, Sergei

Re: [PATCH net-next v2 0/4] net: dsa: Preparatory patches for pdata

[Vivien Didelot]

Hi,

Florian Fainelli <f.fainelli@gmail.com> writes:

> Hi all,
>
> This is a resend of the patches that just clean up and prepare net/dsa/dsa2.c
> to support platform data in the future.
>
> Florian Fainelli (4):
>   net: dsa: Pass device pointer to dsa_register_switch
>   net: dsa: Make most functions take a dsa_port argument
>   net: dsa: Suffix function manipulating device_node with _dn
>   net: dsa: Move ports assignment closer to error checking
>
>  drivers/net/dsa/b53/b53_common.c |  2 +-
>  drivers/net/dsa/mv88e6xxx/chip.c |  7 ++--
>  include/net/dsa.h                |  2 +-
>  net/dsa/dsa.c                    | 14 ++++---
>  net/dsa/dsa2.c                   | 87 ++++++++++++++++++++++------------------
>  net/dsa/dsa_priv.h               |  4 +-
>  6 files changed, 62 insertions(+), 54 deletions(-)

Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>

Thanks,

        Vivien

[PATCH net-next v2 0/4] net: dsa: Preparatory patches

[Florian Fainelli]

Hi David,

This patch series extracts the 4 patches of the larger: net: dsa: Support for
pdata in dsa2 while we wait for feedback from Greg KH on the device references.

Changes in v2:

- rebased properly after the multi-MDIO bus support added to mv88e6xxx

Thanks!

Florian Fainelli (4):
  net: dsa: Pass device pointer to dsa_register_switch
  net: dsa: Make most functions take a dsa_port argument
  net: dsa: Suffix function manipulating device_node with _dn
  net: dsa: Move ports assignment closer to error checking

 drivers/net/dsa/b53/b53_common.c |  2 +-
 drivers/net/dsa/mv88e6xxx/chip.c | 11 ++---
 drivers/net/dsa/qca8k.c          |  2 +-
 include/net/dsa.h                |  2 +-
 net/dsa/dsa.c                    | 15 ++++---
 net/dsa/dsa2.c                   | 87 ++++++++++++++++++++++------------------
 net/dsa/dsa_priv.h               |  4 +-
 7 files changed, 67 insertions(+), 56 deletions(-)

-- 
2.9.3

[PATCH net-next v2 3/4] net: dsa: Suffix function manipulating device_node with _dn

[Florian Fainelli]

Make it clear that these functions take a device_node structure pointer

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
---
 net/dsa/dsa2.c | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/net/dsa/dsa2.c b/net/dsa/dsa2.c
index 56c43ca7c049..4c11619a818b 100644
--- a/net/dsa/dsa2.c
+++ b/net/dsa/dsa2.c
@@ -93,8 +93,8 @@ static bool dsa_port_is_cpu(struct dsa_port *port)
 	return !!of_parse_phandle(port->dn, "ethernet", 0);
 }
 
-static bool dsa_ds_find_port(struct dsa_switch *ds,
-			     struct device_node *port)
+static bool dsa_ds_find_port_dn(struct dsa_switch *ds,
+				struct device_node *port)
 {
 	u32 index;
 
@@ -104,8 +104,8 @@ static bool dsa_ds_find_port(struct dsa_switch *ds,
 	return false;
 }
 
-static struct dsa_switch *dsa_dst_find_port(struct dsa_switch_tree *dst,
-					    struct device_node *port)
+static struct dsa_switch *dsa_dst_find_port_dn(struct dsa_switch_tree *dst,
+					       struct device_node *port)
 {
 	struct dsa_switch *ds;
 	u32 index;
@@ -115,7 +115,7 @@ static struct dsa_switch *dsa_dst_find_port(struct dsa_switch_tree *dst,
 		if (!ds)
 			continue;
 
-		if (dsa_ds_find_port(ds, port))
+		if (dsa_ds_find_port_dn(ds, port))
 			return ds;
 	}
 
@@ -136,7 +136,7 @@ static int dsa_port_complete(struct dsa_switch_tree *dst,
 		if (!link)
 			break;
 
-		dst_ds = dsa_dst_find_port(dst, link);
+		dst_ds = dsa_dst_find_port_dn(dst, link);
 		of_node_put(link);
 
 		if (!dst_ds)
@@ -545,7 +545,7 @@ static int dsa_parse_ports_dn(struct device_node *ports, struct dsa_switch *ds)
 	return 0;
 }
 
-static int dsa_parse_member(struct device_node *np, u32 *tree, u32 *index)
+static int dsa_parse_member_dn(struct device_node *np, u32 *tree, u32 *index)
 {
 	int err;
 
@@ -591,7 +591,7 @@ static int _dsa_register_switch(struct dsa_switch *ds, struct device *dev)
 	u32 tree, index;
 	int i, err;
 
-	err = dsa_parse_member(np, &tree, &index);
+	err = dsa_parse_member_dn(np, &tree, &index);
 	if (err)
 		return err;
 
-- 
2.9.3