[PATCH net-next 00/14] ibm: emac: cleanup modules

[PATCH net-next 00/14] ibm: emac: cleanup modules

[Rosen Penev]

The modules are fairly old and as such can benefit from devm management.

All except ZMII tested on a Cisco MX60W. No problems found.

Rosen Penev (14):
  net: ibm: emac: tah: use devm for kzalloc
  net: ibm: emac: tah: use devm for mutex_init
  net: ibm: emac: tah: devm_platform_get_resources
  net: ibm: emac: rgmii: use devm for kzalloc
  net: ibm: emac: rgmii: use devm for mutex_init
  net: ibm: emac: rgmii: devm_platform_get_resource
  net: ibm: emac: zmii: use devm for kzalloc
  net: ibm: emac: zmii: use devm for mutex_init
  net: ibm: emac: zmii: devm_platform_get_resource
  net: ibm: emac: mal: use devm for kzalloc
  net: ibm: emac: mal: use devm for request_irq
  net: ibm: emac: mal: move irq maps down
  net: ibm: emac: mal: add dcr_unmap to _remove
  net: ibm: emac: mal: move dcr map down

 drivers/net/ethernet/ibm/emac/mal.c   | 107 ++++++++++----------------
 drivers/net/ethernet/ibm/emac/rgmii.c |  49 ++++--------
 drivers/net/ethernet/ibm/emac/tah.c   |  49 ++++--------
 drivers/net/ethernet/ibm/emac/zmii.c  |  49 ++++--------
 4 files changed, 79 insertions(+), 175 deletions(-)

-- 
2.46.2

[PATCH net-next 01/14] net: ibm: emac: tah: use devm for kzalloc

[Rosen Penev]

Simplifies the probe function by removing gotos.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
---
 drivers/net/ethernet/ibm/emac/tah.c | 21 ++++++---------------
 1 file changed, 6 insertions(+), 15 deletions(-)

diff --git a/drivers/net/ethernet/ibm/emac/tah.c b/drivers/net/ethernet/ibm/emac/tah.c
index 8407ff83b1d3..03e0a4445569 100644
--- a/drivers/net/ethernet/ibm/emac/tah.c
+++ b/drivers/net/ethernet/ibm/emac/tah.c
@@ -90,28 +90,25 @@ static int tah_probe(struct platform_device *ofdev)
 	struct device_node *np = ofdev->dev.of_node;
 	struct tah_instance *dev;
 	struct resource regs;
-	int rc;
 
-	rc = -ENOMEM;
-	dev = kzalloc(sizeof(struct tah_instance), GFP_KERNEL);
-	if (dev == NULL)
-		goto err_gone;
+	dev = devm_kzalloc(&ofdev->dev, sizeof(struct tah_instance),
+			   GFP_KERNEL);
+	if (!dev)
+		return -ENOMEM;
 
 	mutex_init(&dev->lock);
 	dev->ofdev = ofdev;
 
-	rc = -ENXIO;
 	if (of_address_to_resource(np, 0, &regs)) {
 		printk(KERN_ERR "%pOF: Can't get registers address\n", np);
-		goto err_free;
+		return -ENXIO;
 	}
 
-	rc = -ENOMEM;
 	dev->base = (struct tah_regs __iomem *)ioremap(regs.start,
 					       sizeof(struct tah_regs));
 	if (dev->base == NULL) {
 		printk(KERN_ERR "%pOF: Can't map device registers!\n", np);
-		goto err_free;
+		return -ENOMEM;
 	}
 
 	platform_set_drvdata(ofdev, dev);
@@ -123,11 +120,6 @@ static int tah_probe(struct platform_device *ofdev)
 	wmb();
 
 	return 0;
-
- err_free:
-	kfree(dev);
- err_gone:
-	return rc;
 }
 
 static void tah_remove(struct platform_device *ofdev)
@@ -137,7 +129,6 @@ static void tah_remove(struct platform_device *ofdev)
 	WARN_ON(dev->users != 0);
 
 	iounmap(dev->base);
-	kfree(dev);
 }
 
 static const struct of_device_id tah_match[] =
-- 
2.46.2

[PATCH net-next 02/14] net: ibm: emac: tah: use devm for mutex_init

[Rosen Penev]

It seems that since inception, this driver never called mutex_destroy in
_remove. Use devm to handle this automatically.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
---
 drivers/net/ethernet/ibm/emac/tah.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/ibm/emac/tah.c b/drivers/net/ethernet/ibm/emac/tah.c
index 03e0a4445569..61f70066acb0 100644
--- a/drivers/net/ethernet/ibm/emac/tah.c
+++ b/drivers/net/ethernet/ibm/emac/tah.c
@@ -90,13 +90,17 @@ static int tah_probe(struct platform_device *ofdev)
 	struct device_node *np = ofdev->dev.of_node;
 	struct tah_instance *dev;
 	struct resource regs;
+	int err;
 
 	dev = devm_kzalloc(&ofdev->dev, sizeof(struct tah_instance),
 			   GFP_KERNEL);
 	if (!dev)
 		return -ENOMEM;
 
-	mutex_init(&dev->lock);
+	err = devm_mutex_init(&ofdev->dev, &dev->lock);
+	if (err)
+		return err;
+
 	dev->ofdev = ofdev;
 
 	if (of_address_to_resource(np, 0, &regs)) {
-- 
2.46.2

[PATCH net-next 03/14] net: ibm: emac: tah: devm_platform_get_resources

[Rosen Penev]

Simplifies the probe function by a bit and allows removing the _remove
function such that devm now handles all cleanup.

printk gets converted to dev_err as np is now gone.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
---
 drivers/net/ethernet/ibm/emac/tah.c | 26 ++++----------------------
 1 file changed, 4 insertions(+), 22 deletions(-)

diff --git a/drivers/net/ethernet/ibm/emac/tah.c b/drivers/net/ethernet/ibm/emac/tah.c
index 61f70066acb0..9e7d79e76a12 100644
--- a/drivers/net/ethernet/ibm/emac/tah.c
+++ b/drivers/net/ethernet/ibm/emac/tah.c
@@ -87,9 +87,7 @@ void *tah_dump_regs(struct platform_device *ofdev, void *buf)
 
 static int tah_probe(struct platform_device *ofdev)
 {
-	struct device_node *np = ofdev->dev.of_node;
 	struct tah_instance *dev;
-	struct resource regs;
 	int err;
 
 	dev = devm_kzalloc(&ofdev->dev, sizeof(struct tah_instance),
@@ -103,16 +101,10 @@ static int tah_probe(struct platform_device *ofdev)
 
 	dev->ofdev = ofdev;
 
-	if (of_address_to_resource(np, 0, &regs)) {
-		printk(KERN_ERR "%pOF: Can't get registers address\n", np);
-		return -ENXIO;
-	}
-
-	dev->base = (struct tah_regs __iomem *)ioremap(regs.start,
-					       sizeof(struct tah_regs));
-	if (dev->base == NULL) {
-		printk(KERN_ERR "%pOF: Can't map device registers!\n", np);
-		return -ENOMEM;
+	dev->base = devm_platform_ioremap_resource(ofdev, 0);
+	if (IS_ERR(dev->base)) {
+		dev_err(&ofdev->dev, "can't map device registers");
+		return PTR_ERR(dev->base);
 	}
 
 	platform_set_drvdata(ofdev, dev);
@@ -126,15 +118,6 @@ static int tah_probe(struct platform_device *ofdev)
 	return 0;
 }
 
-static void tah_remove(struct platform_device *ofdev)
-{
-	struct tah_instance *dev = platform_get_drvdata(ofdev);
-
-	WARN_ON(dev->users != 0);
-
-	iounmap(dev->base);
-}
-
 static const struct of_device_id tah_match[] =
 {
 	{
@@ -153,7 +136,6 @@ static struct platform_driver tah_driver = {
 		.of_match_table = tah_match,
 	},
 	.probe = tah_probe,
-	.remove_new = tah_remove,
 };
 
 module_platform_driver(tah_driver);
-- 
2.46.2

[PATCH net-next 04/14] net: ibm: emac: rgmii: use devm for kzalloc

[Rosen Penev]

Simplifies the probe function by removing gotos.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
---
 drivers/net/ethernet/ibm/emac/rgmii.c | 21 ++++++---------------
 1 file changed, 6 insertions(+), 15 deletions(-)

diff --git a/drivers/net/ethernet/ibm/emac/rgmii.c b/drivers/net/ethernet/ibm/emac/rgmii.c
index 52f080661f87..8c646a5e5c56 100644
--- a/drivers/net/ethernet/ibm/emac/rgmii.c
+++ b/drivers/net/ethernet/ibm/emac/rgmii.c
@@ -219,28 +219,25 @@ static int rgmii_probe(struct platform_device *ofdev)
 	struct device_node *np = ofdev->dev.of_node;
 	struct rgmii_instance *dev;
 	struct resource regs;
-	int rc;
 
-	rc = -ENOMEM;
-	dev = kzalloc(sizeof(struct rgmii_instance), GFP_KERNEL);
-	if (dev == NULL)
-		goto err_gone;
+	dev = devm_kzalloc(&ofdev->dev, sizeof(struct rgmii_instance),
+			   GFP_KERNEL);
+	if (!dev)
+		return -ENOMEM;
 
 	mutex_init(&dev->lock);
 	dev->ofdev = ofdev;
 
-	rc = -ENXIO;
 	if (of_address_to_resource(np, 0, &regs)) {
 		printk(KERN_ERR "%pOF: Can't get registers address\n", np);
-		goto err_free;
+		return -ENXIO;
 	}
 
-	rc = -ENOMEM;
 	dev->base = (struct rgmii_regs __iomem *)ioremap(regs.start,
 						 sizeof(struct rgmii_regs));
 	if (dev->base == NULL) {
 		printk(KERN_ERR "%pOF: Can't map device registers!\n", np);
-		goto err_free;
+		return -ENOMEM;
 	}
 
 	/* Check for RGMII flags */
@@ -266,11 +263,6 @@ static int rgmii_probe(struct platform_device *ofdev)
 	platform_set_drvdata(ofdev, dev);
 
 	return 0;
-
- err_free:
-	kfree(dev);
- err_gone:
-	return rc;
 }
 
 static void rgmii_remove(struct platform_device *ofdev)
@@ -280,7 +272,6 @@ static void rgmii_remove(struct platform_device *ofdev)
 	WARN_ON(dev->users != 0);
 
 	iounmap(dev->base);
-	kfree(dev);
 }
 
 static const struct of_device_id rgmii_match[] =
-- 
2.46.2

[PATCH net-next 05/14] net: ibm: emac: rgmii: use devm for mutex_init

[Rosen Penev]

It seems that since inception, this driver never called mutex_destroy in
_remove. Use devm to handle this automatically.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
---
 drivers/net/ethernet/ibm/emac/rgmii.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/ibm/emac/rgmii.c b/drivers/net/ethernet/ibm/emac/rgmii.c
index 8c646a5e5c56..c2d6db2e1d2d 100644
--- a/drivers/net/ethernet/ibm/emac/rgmii.c
+++ b/drivers/net/ethernet/ibm/emac/rgmii.c
@@ -219,13 +219,17 @@ static int rgmii_probe(struct platform_device *ofdev)
 	struct device_node *np = ofdev->dev.of_node;
 	struct rgmii_instance *dev;
 	struct resource regs;
+	int err;
 
 	dev = devm_kzalloc(&ofdev->dev, sizeof(struct rgmii_instance),
 			   GFP_KERNEL);
 	if (!dev)
 		return -ENOMEM;
 
-	mutex_init(&dev->lock);
+	err = devm_mutex_init(&ofdev->dev, &dev->lock);
+	if (err)
+		return err;
+
 	dev->ofdev = ofdev;
 
 	if (of_address_to_resource(np, 0, &regs)) {
-- 
2.46.2

[PATCH net-next 06/14] net: ibm: emac: rgmii: devm_platform_get_resource

[Rosen Penev]

Simplifies the probe function by a bit and allows removing the _remove
function such that devm now handles all cleanup.

printk gets converted to dev_err as np is now gone.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
---
 drivers/net/ethernet/ibm/emac/rgmii.c | 26 ++++----------------------
 1 file changed, 4 insertions(+), 22 deletions(-)

diff --git a/drivers/net/ethernet/ibm/emac/rgmii.c b/drivers/net/ethernet/ibm/emac/rgmii.c
index c2d6db2e1d2d..6b61c49aa1f4 100644
--- a/drivers/net/ethernet/ibm/emac/rgmii.c
+++ b/drivers/net/ethernet/ibm/emac/rgmii.c
@@ -216,9 +216,7 @@ void *rgmii_dump_regs(struct platform_device *ofdev, void *buf)
 
 static int rgmii_probe(struct platform_device *ofdev)
 {
-	struct device_node *np = ofdev->dev.of_node;
 	struct rgmii_instance *dev;
-	struct resource regs;
 	int err;
 
 	dev = devm_kzalloc(&ofdev->dev, sizeof(struct rgmii_instance),
@@ -232,16 +230,10 @@ static int rgmii_probe(struct platform_device *ofdev)
 
 	dev->ofdev = ofdev;
 
-	if (of_address_to_resource(np, 0, &regs)) {
-		printk(KERN_ERR "%pOF: Can't get registers address\n", np);
-		return -ENXIO;
-	}
-
-	dev->base = (struct rgmii_regs __iomem *)ioremap(regs.start,
-						 sizeof(struct rgmii_regs));
-	if (dev->base == NULL) {
-		printk(KERN_ERR "%pOF: Can't map device registers!\n", np);
-		return -ENOMEM;
+	dev->base = devm_platform_ioremap_resource(ofdev, 0);
+	if (IS_ERR(dev->base)) {
+		dev_err(&ofdev->dev, "can't map device registers");
+		return PTR_ERR(dev->base);
 	}
 
 	/* Check for RGMII flags */
@@ -269,15 +261,6 @@ static int rgmii_probe(struct platform_device *ofdev)
 	return 0;
 }
 
-static void rgmii_remove(struct platform_device *ofdev)
-{
-	struct rgmii_instance *dev = platform_get_drvdata(ofdev);
-
-	WARN_ON(dev->users != 0);
-
-	iounmap(dev->base);
-}
-
 static const struct of_device_id rgmii_match[] =
 {
 	{
@@ -295,7 +278,6 @@ static struct platform_driver rgmii_driver = {
 		.of_match_table = rgmii_match,
 	},
 	.probe = rgmii_probe,
-	.remove_new = rgmii_remove,
 };
 
 module_platform_driver(rgmii_driver);
-- 
2.46.2

[PATCH net-next 07/14] net: ibm: emac: zmii: use devm for kzalloc

[Rosen Penev]

Simplifies the probe function by removing gotos.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
---
 drivers/net/ethernet/ibm/emac/zmii.c | 23 +++++++----------------
 1 file changed, 7 insertions(+), 16 deletions(-)

diff --git a/drivers/net/ethernet/ibm/emac/zmii.c b/drivers/net/ethernet/ibm/emac/zmii.c
index 97cea64abe55..c38eb6b3173e 100644
--- a/drivers/net/ethernet/ibm/emac/zmii.c
+++ b/drivers/net/ethernet/ibm/emac/zmii.c
@@ -235,29 +235,26 @@ static int zmii_probe(struct platform_device *ofdev)
 	struct device_node *np = ofdev->dev.of_node;
 	struct zmii_instance *dev;
 	struct resource regs;
-	int rc;
 
-	rc = -ENOMEM;
-	dev = kzalloc(sizeof(struct zmii_instance), GFP_KERNEL);
-	if (dev == NULL)
-		goto err_gone;
+	dev = devm_kzalloc(&ofdev->dev, sizeof(struct zmii_instance),
+			   GFP_KERNEL);
+	if (!dev)
+		return -ENOMEM;
 
 	mutex_init(&dev->lock);
 	dev->ofdev = ofdev;
 	dev->mode = PHY_INTERFACE_MODE_NA;
 
-	rc = -ENXIO;
 	if (of_address_to_resource(np, 0, &regs)) {
 		printk(KERN_ERR "%pOF: Can't get registers address\n", np);
-		goto err_free;
+		return -ENXIO;
 	}
 
-	rc = -ENOMEM;
 	dev->base = (struct zmii_regs __iomem *)ioremap(regs.start,
 						sizeof(struct zmii_regs));
-	if (dev->base == NULL) {
+	if (!dev->base) {
 		printk(KERN_ERR "%pOF: Can't map device registers!\n", np);
-		goto err_free;
+		return -ENOMEM;
 	}
 
 	/* We may need FER value for autodetection later */
@@ -271,11 +268,6 @@ static int zmii_probe(struct platform_device *ofdev)
 	platform_set_drvdata(ofdev, dev);
 
 	return 0;
-
- err_free:
-	kfree(dev);
- err_gone:
-	return rc;
 }
 
 static void zmii_remove(struct platform_device *ofdev)
@@ -285,7 +277,6 @@ static void zmii_remove(struct platform_device *ofdev)
 	WARN_ON(dev->users != 0);
 
 	iounmap(dev->base);
-	kfree(dev);
 }
 
 static const struct of_device_id zmii_match[] =
-- 
2.46.2

[PATCH net-next 08/14] net: ibm: emac: zmii: use devm for mutex_init

[Rosen Penev]

It seems that since inception, this driver never called mutex_destroy in
_remove. Use devm to handle this automatically.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
---
 drivers/net/ethernet/ibm/emac/zmii.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/ibm/emac/zmii.c b/drivers/net/ethernet/ibm/emac/zmii.c
index c38eb6b3173e..b0c46dfe95b5 100644
--- a/drivers/net/ethernet/ibm/emac/zmii.c
+++ b/drivers/net/ethernet/ibm/emac/zmii.c
@@ -235,13 +235,17 @@ static int zmii_probe(struct platform_device *ofdev)
 	struct device_node *np = ofdev->dev.of_node;
 	struct zmii_instance *dev;
 	struct resource regs;
+	int err;
 
 	dev = devm_kzalloc(&ofdev->dev, sizeof(struct zmii_instance),
 			   GFP_KERNEL);
 	if (!dev)
 		return -ENOMEM;
 
-	mutex_init(&dev->lock);
+	err = devm_mutex_init(&ofdev->dev, &dev->lock);
+	if (err)
+		return err;
+
 	dev->ofdev = ofdev;
 	dev->mode = PHY_INTERFACE_MODE_NA;
 
-- 
2.46.2

[PATCH net-next 09/14] net: ibm: emac: zmii: devm_platform_get_resource

[Rosen Penev]

Simplifies the probe function by a bit and allows removing the _remove
function such that devm now handles all cleanup.

printk gets converted to dev_err as np is now gone.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
---
 drivers/net/ethernet/ibm/emac/zmii.c | 26 ++++----------------------
 1 file changed, 4 insertions(+), 22 deletions(-)

diff --git a/drivers/net/ethernet/ibm/emac/zmii.c b/drivers/net/ethernet/ibm/emac/zmii.c
index b0c46dfe95b5..40744733fd02 100644
--- a/drivers/net/ethernet/ibm/emac/zmii.c
+++ b/drivers/net/ethernet/ibm/emac/zmii.c
@@ -232,9 +232,7 @@ void *zmii_dump_regs(struct platform_device *ofdev, void *buf)
 
 static int zmii_probe(struct platform_device *ofdev)
 {
-	struct device_node *np = ofdev->dev.of_node;
 	struct zmii_instance *dev;
-	struct resource regs;
 	int err;
 
 	dev = devm_kzalloc(&ofdev->dev, sizeof(struct zmii_instance),
@@ -249,16 +247,10 @@ static int zmii_probe(struct platform_device *ofdev)
 	dev->ofdev = ofdev;
 	dev->mode = PHY_INTERFACE_MODE_NA;
 
-	if (of_address_to_resource(np, 0, &regs)) {
-		printk(KERN_ERR "%pOF: Can't get registers address\n", np);
-		return -ENXIO;
-	}
-
-	dev->base = (struct zmii_regs __iomem *)ioremap(regs.start,
-						sizeof(struct zmii_regs));
-	if (!dev->base) {
-		printk(KERN_ERR "%pOF: Can't map device registers!\n", np);
-		return -ENOMEM;
+	dev->base = devm_platform_ioremap_resource(ofdev, 0);
+	if (IS_ERR(dev->base)) {
+		dev_err(&ofdev->dev, "can't map device registers");
+		return PTR_ERR(dev->base);
 	}
 
 	/* We may need FER value for autodetection later */
@@ -274,15 +266,6 @@ static int zmii_probe(struct platform_device *ofdev)
 	return 0;
 }
 
-static void zmii_remove(struct platform_device *ofdev)
-{
-	struct zmii_instance *dev = platform_get_drvdata(ofdev);
-
-	WARN_ON(dev->users != 0);
-
-	iounmap(dev->base);
-}
-
 static const struct of_device_id zmii_match[] =
 {
 	{
@@ -301,7 +284,6 @@ static struct platform_driver zmii_driver = {
 		.of_match_table = zmii_match,
 	},
 	.probe = zmii_probe,
-	.remove_new = zmii_remove,
 };
 
 module_platform_driver(zmii_driver);
-- 
2.46.2

[PATCH net-next 10/14] net: ibm: emac: mal: use devm for kzalloc

[Rosen Penev]

Simplifies the probe function by removing gotos.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
---
 drivers/net/ethernet/ibm/emac/mal.c | 28 ++++++++++------------------
 1 file changed, 10 insertions(+), 18 deletions(-)

diff --git a/drivers/net/ethernet/ibm/emac/mal.c b/drivers/net/ethernet/ibm/emac/mal.c
index a632d3a207d3..70019ced47ff 100644
--- a/drivers/net/ethernet/ibm/emac/mal.c
+++ b/drivers/net/ethernet/ibm/emac/mal.c
@@ -524,7 +524,8 @@ static int mal_probe(struct platform_device *ofdev)
 	unsigned long irqflags;
 	irq_handler_t hdlr_serr, hdlr_txde, hdlr_rxde;
 
-	mal = kzalloc(sizeof(struct mal_instance), GFP_KERNEL);
+	mal = devm_kzalloc(&ofdev->dev, sizeof(struct mal_instance),
+			   GFP_KERNEL);
 	if (!mal)
 		return -ENOMEM;
 
@@ -539,8 +540,7 @@ static int mal_probe(struct platform_device *ofdev)
 		printk(KERN_ERR
 		       "mal%d: can't find MAL num-tx-chans property!\n",
 		       index);
-		err = -ENODEV;
-		goto fail;
+		return -ENODEV;
 	}
 	mal->num_tx_chans = prop[0];
 
@@ -549,8 +549,7 @@ static int mal_probe(struct platform_device *ofdev)
 		printk(KERN_ERR
 		       "mal%d: can't find MAL num-rx-chans property!\n",
 		       index);
-		err = -ENODEV;
-		goto fail;
+		return -ENODEV;
 	}
 	mal->num_rx_chans = prop[0];
 
@@ -558,15 +557,13 @@ static int mal_probe(struct platform_device *ofdev)
 	if (dcr_base == 0) {
 		printk(KERN_ERR
 		       "mal%d: can't find DCR resource!\n", index);
-		err = -ENODEV;
-		goto fail;
+		return -ENODEV;
 	}
 	mal->dcr_host = dcr_map(ofdev->dev.of_node, dcr_base, 0x100);
 	if (!DCR_MAP_OK(mal->dcr_host)) {
 		printk(KERN_ERR
 		       "mal%d: failed to map DCRs !\n", index);
-		err = -ENODEV;
-		goto fail;
+		return -ENODEV;
 	}
 
 	if (of_device_is_compatible(ofdev->dev.of_node, "ibm,mcmal-405ez")) {
@@ -577,8 +574,7 @@ static int mal_probe(struct platform_device *ofdev)
 #else
 		printk(KERN_ERR "%pOF: Support for 405EZ not enabled!\n",
 				ofdev->dev.of_node);
-		err = -ENODEV;
-		goto fail;
+		return -ENODEV;
 #endif
 	}
 
@@ -711,9 +707,6 @@ static int mal_probe(struct platform_device *ofdev)
 	free_netdev(mal->dummy_dev);
  fail_unmap:
 	dcr_unmap(mal->dcr_host, 0x100);
- fail:
-	kfree(mal);
-
 	return err;
 }
 
@@ -744,10 +737,9 @@ static void mal_remove(struct platform_device *ofdev)
 
 	dma_free_coherent(&ofdev->dev,
 			  sizeof(struct mal_descriptor) *
-			  (NUM_TX_BUFF * mal->num_tx_chans +
-			   NUM_RX_BUFF * mal->num_rx_chans), mal->bd_virt,
-			  mal->bd_dma);
-	kfree(mal);
+				  (NUM_TX_BUFF * mal->num_tx_chans +
+				   NUM_RX_BUFF * mal->num_rx_chans),
+			  mal->bd_virt, mal->bd_dma);
 }
 
 static const struct of_device_id mal_platform_match[] =
-- 
2.46.2

[PATCH net-next 11/14] net: ibm: emac: mal: use devm for request_irq

[Rosen Penev]

Avoids manual frees. Also replaced irq_of_parse_and_map with
platform_get_irq since it's simpler and does the same thing.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
---
 drivers/net/ethernet/ibm/emac/mal.c | 51 ++++++++++++-----------------
 1 file changed, 21 insertions(+), 30 deletions(-)

diff --git a/drivers/net/ethernet/ibm/emac/mal.c b/drivers/net/ethernet/ibm/emac/mal.c
index 70019ced47ff..b07b2e0ce478 100644
--- a/drivers/net/ethernet/ibm/emac/mal.c
+++ b/drivers/net/ethernet/ibm/emac/mal.c
@@ -578,19 +578,19 @@ static int mal_probe(struct platform_device *ofdev)
 #endif
 	}
 
-	mal->txeob_irq = irq_of_parse_and_map(ofdev->dev.of_node, 0);
-	mal->rxeob_irq = irq_of_parse_and_map(ofdev->dev.of_node, 1);
-	mal->serr_irq = irq_of_parse_and_map(ofdev->dev.of_node, 2);
+	mal->txeob_irq = platform_get_irq(ofdev, 0);
+	mal->rxeob_irq = platform_get_irq(ofdev, 1);
+	mal->serr_irq = platform_get_irq(ofdev, 2);
 
 	if (mal_has_feature(mal, MAL_FTR_COMMON_ERR_INT)) {
 		mal->txde_irq = mal->rxde_irq = mal->serr_irq;
 	} else {
-		mal->txde_irq = irq_of_parse_and_map(ofdev->dev.of_node, 3);
-		mal->rxde_irq = irq_of_parse_and_map(ofdev->dev.of_node, 4);
+		mal->txde_irq = platform_get_irq(ofdev, 3);
+		mal->rxde_irq = platform_get_irq(ofdev, 4);
 	}
 
-	if (!mal->txeob_irq || !mal->rxeob_irq || !mal->serr_irq ||
-	    !mal->txde_irq  || !mal->rxde_irq) {
+	if (mal->txeob_irq < 0 || mal->rxeob_irq < 0 || mal->serr_irq < 0 ||
+	    mal->txde_irq < 0 || mal->rxde_irq < 0) {
 		printk(KERN_ERR
 		       "mal%d: failed to map interrupts !\n", index);
 		err = -ENODEV;
@@ -660,21 +660,26 @@ static int mal_probe(struct platform_device *ofdev)
 		hdlr_rxde = mal_rxde;
 	}
 
-	err = request_irq(mal->serr_irq, hdlr_serr, irqflags, "MAL SERR", mal);
+	err = devm_request_irq(&ofdev->dev, mal->serr_irq, hdlr_serr, irqflags,
+			       "MAL SERR", mal);
 	if (err)
 		goto fail2;
-	err = request_irq(mal->txde_irq, hdlr_txde, irqflags, "MAL TX DE", mal);
+	err = devm_request_irq(&ofdev->dev, mal->txde_irq, hdlr_txde, irqflags,
+			       "MAL TX DE", mal);
 	if (err)
-		goto fail3;
-	err = request_irq(mal->txeob_irq, mal_txeob, 0, "MAL TX EOB", mal);
+		goto fail2;
+	err = devm_request_irq(&ofdev->dev, mal->txeob_irq, mal_txeob, 0,
+			       "MAL TX EOB", mal);
 	if (err)
-		goto fail4;
-	err = request_irq(mal->rxde_irq, hdlr_rxde, irqflags, "MAL RX DE", mal);
+		goto fail2;
+	err = devm_request_irq(&ofdev->dev, mal->rxde_irq, hdlr_rxde, irqflags,
+			       "MAL RX DE", mal);
 	if (err)
-		goto fail5;
-	err = request_irq(mal->rxeob_irq, mal_rxeob, 0, "MAL RX EOB", mal);
+		goto fail2;
+	err = devm_request_irq(&ofdev->dev, mal->rxeob_irq, mal_rxeob, 0,
+			       "MAL RX EOB", mal);
 	if (err)
-		goto fail6;
+		goto fail2;
 
 	/* Enable all MAL SERR interrupt sources */
 	set_mal_dcrn(mal, MAL_IER, MAL_IER_EVENTS);
@@ -693,14 +698,6 @@ static int mal_probe(struct platform_device *ofdev)
 
 	return 0;
 
- fail6:
-	free_irq(mal->rxde_irq, mal);
- fail5:
-	free_irq(mal->txeob_irq, mal);
- fail4:
-	free_irq(mal->txde_irq, mal);
- fail3:
-	free_irq(mal->serr_irq, mal);
  fail2:
 	dma_free_coherent(&ofdev->dev, bd_size, mal->bd_virt, mal->bd_dma);
  fail_dummy:
@@ -725,12 +722,6 @@ static void mal_remove(struct platform_device *ofdev)
 		       "mal%d: commac list is not empty on remove!\n",
 		       mal->index);
 
-	free_irq(mal->serr_irq, mal);
-	free_irq(mal->txde_irq, mal);
-	free_irq(mal->txeob_irq, mal);
-	free_irq(mal->rxde_irq, mal);
-	free_irq(mal->rxeob_irq, mal);
-
 	mal_reset(mal);
 
 	free_netdev(mal->dummy_dev);
-- 
2.46.2

[PATCH net-next 12/14] net: ibm: emac: mal: move irq maps down

[Rosen Penev]

Moves the handling right before they are used and allows merging a
branch.

Also get rid of the error handling as devm_request_irq can handle that.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
---
 drivers/net/ethernet/ibm/emac/mal.c | 26 +++++++-------------------
 1 file changed, 7 insertions(+), 19 deletions(-)

diff --git a/drivers/net/ethernet/ibm/emac/mal.c b/drivers/net/ethernet/ibm/emac/mal.c
index b07b2e0ce478..3fae1f0ec020 100644
--- a/drivers/net/ethernet/ibm/emac/mal.c
+++ b/drivers/net/ethernet/ibm/emac/mal.c
@@ -578,25 +578,6 @@ static int mal_probe(struct platform_device *ofdev)
 #endif
 	}
 
-	mal->txeob_irq = platform_get_irq(ofdev, 0);
-	mal->rxeob_irq = platform_get_irq(ofdev, 1);
-	mal->serr_irq = platform_get_irq(ofdev, 2);
-
-	if (mal_has_feature(mal, MAL_FTR_COMMON_ERR_INT)) {
-		mal->txde_irq = mal->rxde_irq = mal->serr_irq;
-	} else {
-		mal->txde_irq = platform_get_irq(ofdev, 3);
-		mal->rxde_irq = platform_get_irq(ofdev, 4);
-	}
-
-	if (mal->txeob_irq < 0 || mal->rxeob_irq < 0 || mal->serr_irq < 0 ||
-	    mal->txde_irq < 0 || mal->rxde_irq < 0) {
-		printk(KERN_ERR
-		       "mal%d: failed to map interrupts !\n", index);
-		err = -ENODEV;
-		goto fail_unmap;
-	}
-
 	INIT_LIST_HEAD(&mal->poll_list);
 	INIT_LIST_HEAD(&mal->list);
 	spin_lock_init(&mal->lock);
@@ -650,10 +631,17 @@ static int mal_probe(struct platform_device *ofdev)
 			     sizeof(struct mal_descriptor) *
 			     mal_rx_bd_offset(mal, i));
 
+	mal->txeob_irq = platform_get_irq(ofdev, 0);
+	mal->rxeob_irq = platform_get_irq(ofdev, 1);
+	mal->serr_irq = platform_get_irq(ofdev, 2);
+
 	if (mal_has_feature(mal, MAL_FTR_COMMON_ERR_INT)) {
+		mal->txde_irq = mal->rxde_irq = mal->serr_irq;
 		irqflags = IRQF_SHARED;
 		hdlr_serr = hdlr_txde = hdlr_rxde = mal_int;
 	} else {
+		mal->txde_irq = platform_get_irq(ofdev, 3);
+		mal->rxde_irq = platform_get_irq(ofdev, 4);
 		irqflags = 0;
 		hdlr_serr = mal_serr;
 		hdlr_txde = mal_txde;
-- 
2.46.2

[PATCH net-next 13/14] net: ibm: emac: mal: add dcr_unmap to _remove

[Rosen Penev]

It's done in probe so it should be done here.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
---
 drivers/net/ethernet/ibm/emac/mal.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/ibm/emac/mal.c b/drivers/net/ethernet/ibm/emac/mal.c
index 3fae1f0ec020..4f58a38f4b32 100644
--- a/drivers/net/ethernet/ibm/emac/mal.c
+++ b/drivers/net/ethernet/ibm/emac/mal.c
@@ -714,6 +714,8 @@ static void mal_remove(struct platform_device *ofdev)
 
 	free_netdev(mal->dummy_dev);
 
+	dcr_unmap(mal->dcr_host, 0x100);
+
 	dma_free_coherent(&ofdev->dev,
 			  sizeof(struct mal_descriptor) *
 				  (NUM_TX_BUFF * mal->num_tx_chans +
-- 
2.46.2

[PATCH net-next 14/14] net: ibm: emac: mal: move dcr map down

[Rosen Penev]

There's actually a bug above where it returns instead of calling goto.
Instead of calling goto, move dcr_map and friends down as they're used
right after the spinlock in mal_reset.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
---
 drivers/net/ethernet/ibm/emac/mal.c | 24 ++++++++++++------------
 1 file changed, 12 insertions(+), 12 deletions(-)

diff --git a/drivers/net/ethernet/ibm/emac/mal.c b/drivers/net/ethernet/ibm/emac/mal.c
index 4f58a38f4b32..e6354843d856 100644
--- a/drivers/net/ethernet/ibm/emac/mal.c
+++ b/drivers/net/ethernet/ibm/emac/mal.c
@@ -553,6 +553,18 @@ static int mal_probe(struct platform_device *ofdev)
 	}
 	mal->num_rx_chans = prop[0];
 
+	if (of_device_is_compatible(ofdev->dev.of_node, "ibm,mcmal-405ez")) {
+#if defined(CONFIG_IBM_EMAC_MAL_CLR_ICINTSTAT) && \
+		defined(CONFIG_IBM_EMAC_MAL_COMMON_ERR)
+		mal->features |= (MAL_FTR_CLEAR_ICINTSTAT |
+				MAL_FTR_COMMON_ERR_INT);
+#else
+		printk(KERN_ERR "%pOF: Support for 405EZ not enabled!\n",
+				ofdev->dev.of_node);
+		return -ENODEV;
+#endif
+	}
+
 	dcr_base = dcr_resource_start(ofdev->dev.of_node, 0);
 	if (dcr_base == 0) {
 		printk(KERN_ERR
@@ -566,18 +578,6 @@ static int mal_probe(struct platform_device *ofdev)
 		return -ENODEV;
 	}
 
-	if (of_device_is_compatible(ofdev->dev.of_node, "ibm,mcmal-405ez")) {
-#if defined(CONFIG_IBM_EMAC_MAL_CLR_ICINTSTAT) && \
-		defined(CONFIG_IBM_EMAC_MAL_COMMON_ERR)
-		mal->features |= (MAL_FTR_CLEAR_ICINTSTAT |
-				MAL_FTR_COMMON_ERR_INT);
-#else
-		printk(KERN_ERR "%pOF: Support for 405EZ not enabled!\n",
-				ofdev->dev.of_node);
-		return -ENODEV;
-#endif
-	}
-
 	INIT_LIST_HEAD(&mal->poll_list);
 	INIT_LIST_HEAD(&mal->list);
 	spin_lock_init(&mal->lock);
-- 
2.46.2

Re: [PATCH net-next 00/14] ibm: emac: cleanup modules

[Jakub Kicinski]

On Sat,  5 Oct 2024 19:28:30 -0700 Rosen Penev wrote:
> The modules are fairly old and as such can benefit from devm management.
> 
> All except ZMII tested on a Cisco MX60W. No problems found.

Only send the second batch once the first one is merged.