diff mbox series

[PATCHv2,net-next,4/8] net: ibm: emac: remove mii_bus with devm

Message ID 20240903194312.12718-5-rosenp@gmail.com (mailing list archive)
State Changes Requested
Delegated to: Netdev Maintainers
Headers show
Series [PATCHv2,net-next,1/8] net: ibm: emac: use devm for alloc_etherdev | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for net-next
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 7 this patch: 7
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers success CCed 5 of 5 maintainers
netdev/build_clang success Errors and warnings before: 7 this patch: 7
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 7 this patch: 7
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 76 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0
netdev/contest success net-next-2024-09-04--15-00 (tests: 718)

Commit Message

Rosen Penev Sept. 3, 2024, 7:42 p.m. UTC 
Switching to devm management of mii_bus allows to remove
mdiobus_unregister calls and thus avoids needing a mii_bus global struct
member.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
---
 drivers/net/ethernet/ibm/emac/core.c | 32 +++++++++++-----------------
 drivers/net/ethernet/ibm/emac/core.h |  1 -
 2 files changed, 13 insertions(+), 20 deletions(-)

Comments

Paolo Abeni Sept. 5, 2024, 10:12 a.m. UTC | #1 
On 9/3/24 21:42, Rosen Penev wrote:
> diff --git a/drivers/net/ethernet/ibm/emac/core.c b/drivers/net/ethernet/ibm/emac/core.c
> index 459f893a0a56..4cf8af9052bf 100644
> --- a/drivers/net/ethernet/ibm/emac/core.c
> +++ b/drivers/net/ethernet/ibm/emac/core.c
> @@ -2580,6 +2580,7 @@ static const struct mii_phy_ops emac_dt_mdio_phy_ops = {
>   
>   static int emac_dt_mdio_probe(struct emac_instance *dev)
>   {
> +	struct mii_bus *bus;
>   	struct device_node *mii_np;
>   	int res;

Minor nit: please respect the reverse xmas tree above.

Thanks,

Paolo
diff mbox series

Patch

diff --git a/drivers/net/ethernet/ibm/emac/core.c b/drivers/net/ethernet/ibm/emac/core.c
index 459f893a0a56..4cf8af9052bf 100644
--- a/drivers/net/ethernet/ibm/emac/core.c
+++ b/drivers/net/ethernet/ibm/emac/core.c
@@ -2580,6 +2580,7 @@  static const struct mii_phy_ops emac_dt_mdio_phy_ops = {
 
 static int emac_dt_mdio_probe(struct emac_instance *dev)
 {
+	struct mii_bus *bus;
 	struct device_node *mii_np;
 	int res;
 
@@ -2594,23 +2595,23 @@  static int emac_dt_mdio_probe(struct emac_instance *dev)
 		goto put_node;
 	}
 
-	dev->mii_bus = devm_mdiobus_alloc(&dev->ofdev->dev);
-	if (!dev->mii_bus) {
+	bus = devm_mdiobus_alloc(&dev->ofdev->dev);
+	if (!bus) {
 		res = -ENOMEM;
 		goto put_node;
 	}
 
-	dev->mii_bus->priv = dev->ndev;
-	dev->mii_bus->parent = dev->ndev->dev.parent;
-	dev->mii_bus->name = "emac_mdio";
-	dev->mii_bus->read = &emac_mii_bus_read;
-	dev->mii_bus->write = &emac_mii_bus_write;
-	dev->mii_bus->reset = &emac_mii_bus_reset;
-	snprintf(dev->mii_bus->id, MII_BUS_ID_SIZE, "%s", dev->ofdev->name);
-	res = of_mdiobus_register(dev->mii_bus, mii_np);
+	bus->priv = dev->ndev;
+	bus->parent = dev->ndev->dev.parent;
+	bus->name = "emac_mdio";
+	bus->read = &emac_mii_bus_read;
+	bus->write = &emac_mii_bus_write;
+	bus->reset = &emac_mii_bus_reset;
+	snprintf(bus->id, MII_BUS_ID_SIZE, "%s", dev->ofdev->name);
+	res = devm_of_mdiobus_register(&dev->ofdev->dev, bus, mii_np);
 	if (res) {
 		dev_err(&dev->ofdev->dev, "cannot register MDIO bus %s (%d)",
-			dev->mii_bus->name, res);
+			bus->name, res);
 	}
 
  put_node:
@@ -2656,8 +2657,6 @@  static int emac_dt_phy_probe(struct emac_instance *dev)
 		res = emac_dt_mdio_probe(dev);
 		if (!res) {
 			res = emac_dt_phy_connect(dev, phy_handle);
-			if (res)
-				mdiobus_unregister(dev->mii_bus);
 		}
 	}
 
@@ -2697,10 +2696,8 @@  static int emac_init_phy(struct emac_instance *dev)
 
 			res = of_phy_register_fixed_link(np);
 			dev->phy_dev = of_phy_find_device(np);
-			if (res || !dev->phy_dev) {
-				mdiobus_unregister(dev->mii_bus);
+			if (res || !dev->phy_dev)
 				return res ? res : -EINVAL;
-			}
 			emac_adjust_link(dev->ndev);
 			put_device(&dev->phy_dev->mdio.dev);
 		}
@@ -3262,9 +3259,6 @@  static void emac_remove(struct platform_device *ofdev)
 	if (dev->phy_dev)
 		phy_disconnect(dev->phy_dev);
 
-	if (dev->mii_bus)
-		mdiobus_unregister(dev->mii_bus);
-
 	busy_phy_map &= ~(1 << dev->phy.address);
 	DBG(dev, "busy_phy_map now %#x" NL, busy_phy_map);
 
diff --git a/drivers/net/ethernet/ibm/emac/core.h b/drivers/net/ethernet/ibm/emac/core.h
index 295516b07662..f4bd4cd8ac4a 100644
--- a/drivers/net/ethernet/ibm/emac/core.h
+++ b/drivers/net/ethernet/ibm/emac/core.h
@@ -189,7 +189,6 @@  struct emac_instance {
 	struct mutex			mdio_lock;
 
 	/* Device-tree based phy configuration */
-	struct mii_bus			*mii_bus;
 	struct phy_device		*phy_dev;
 
 	/* ZMII infos if any */