[PATCH 00/11] phy: simplify with cleanup.h and few other ideas

[PATCH 00/11] phy: simplify with cleanup.h and few other ideas

[Krzysztof Kozlowski]

Make code simpler with scoped/cleanup.h/dev_err_probe.

Best regards,
Krzysztof

---
Krzysztof Kozlowski (11):
      phy: broadcom: bcm-cygnus-pcie: Simplify with scoped for each OF child loop
      phy: broadcom: brcm-sata: Simplify with scoped for each OF child loop
      phy: cadence: sierra: Simplify with scoped for each OF child loop
      phy: hisilicon: usb2: Simplify with scoped for each OF child loop
      phy: mediatek: tphy: Simplify with scoped for each OF child loop
      phy: mediatek: xsphy: Simplify with scoped for each OF child loop
      phy: qcom: qmp-pcie-msm8996: Simplify with scoped for each OF child loop
      phy: ti: am654-serdes: Use scoped device node handling to simplify error paths
      phy: ti: gmii-sel: Simplify with dev_err_probe()
      phy: ti: j721e-wiz: Drop OF node reference earlier for simpler code
      phy: ti: j721e-wiz: Simplify with scoped for each OF child loop

 drivers/phy/broadcom/phy-bcm-cygnus-pcie.c       | 20 +++-------
 drivers/phy/broadcom/phy-brcm-sata.c             | 21 ++++------
 drivers/phy/cadence/phy-cadence-sierra.c         |  7 +---
 drivers/phy/hisilicon/phy-hisi-inno-usb2.c       | 12 ++----
 drivers/phy/mediatek/phy-mtk-tphy.c              | 30 ++++++--------
 drivers/phy/mediatek/phy-mtk-xsphy.c             | 27 +++++--------
 drivers/phy/qualcomm/phy-qcom-qmp-pcie-msm8996.c | 11 ++----
 drivers/phy/ti/phy-am654-serdes.c                | 50 ++++++++----------------
 drivers/phy/ti/phy-gmii-sel.c                    | 16 +++-----
 drivers/phy/ti/phy-j721e-wiz.c                   | 12 ++----
 10 files changed, 68 insertions(+), 138 deletions(-)
---
base-commit: 834e84894a9d34ecc195d5db5386912bde3eefd7
change-id: 20240825-phy-of-node-scope-055ed0431743

Best regards,
-- 
Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

[PATCH 01/11] phy: broadcom: bcm-cygnus-pcie: Simplify with scoped for each OF child loop

[Krzysztof Kozlowski]

Use scoped for_each_available_child_of_node_scoped() when iterating over
device nodes to make code a bit simpler.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
---
 drivers/phy/broadcom/phy-bcm-cygnus-pcie.c | 20 ++++++--------------
 1 file changed, 6 insertions(+), 14 deletions(-)

diff --git a/drivers/phy/broadcom/phy-bcm-cygnus-pcie.c b/drivers/phy/broadcom/phy-bcm-cygnus-pcie.c
index cc29b08e49eb..462c61a24ec5 100644
--- a/drivers/phy/broadcom/phy-bcm-cygnus-pcie.c
+++ b/drivers/phy/broadcom/phy-bcm-cygnus-pcie.c
@@ -113,11 +113,10 @@ static const struct phy_ops cygnus_pcie_phy_ops = {
 static int cygnus_pcie_phy_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
-	struct device_node *node = dev->of_node, *child;
+	struct device_node *node = dev->of_node;
 	struct cygnus_pcie_phy_core *core;
 	struct phy_provider *provider;
 	unsigned cnt = 0;
-	int ret;
 
 	if (of_get_child_count(node) == 0) {
 		dev_err(dev, "PHY no child node\n");
@@ -136,35 +135,31 @@ static int cygnus_pcie_phy_probe(struct platform_device *pdev)
 
 	mutex_init(&core->lock);
 
-	for_each_available_child_of_node(node, child) {
+	for_each_available_child_of_node_scoped(node, child) {
 		unsigned int id;
 		struct cygnus_pcie_phy *p;
 
 		if (of_property_read_u32(child, "reg", &id)) {
 			dev_err(dev, "missing reg property for %pOFn\n",
 				child);
-			ret = -EINVAL;
-			goto put_child;
+			return -EINVAL;
 		}
 
 		if (id >= MAX_NUM_PHYS) {
 			dev_err(dev, "invalid PHY id: %u\n", id);
-			ret = -EINVAL;
-			goto put_child;
+			return -EINVAL;
 		}
 
 		if (core->phys[id].phy) {
 			dev_err(dev, "duplicated PHY id: %u\n", id);
-			ret = -EINVAL;
-			goto put_child;
+			return -EINVAL;
 		}
 
 		p = &core->phys[id];
 		p->phy = devm_phy_create(dev, child, &cygnus_pcie_phy_ops);
 		if (IS_ERR(p->phy)) {
 			dev_err(dev, "failed to create PHY\n");
-			ret = PTR_ERR(p->phy);
-			goto put_child;
+			return PTR_ERR(p->phy);
 		}
 
 		p->core = core;
@@ -184,9 +179,6 @@ static int cygnus_pcie_phy_probe(struct platform_device *pdev)
 	dev_dbg(dev, "registered %u PCIe PHY(s)\n", cnt);
 
 	return 0;
-put_child:
-	of_node_put(child);
-	return ret;
 }
 
 static const struct of_device_id cygnus_pcie_phy_match_table[] = {

-- 
2.43.0

[PATCH 02/11] phy: broadcom: brcm-sata: Simplify with scoped for each OF child loop

[Krzysztof Kozlowski]

Use scoped for_each_available_child_of_node_scoped() when iterating over
device nodes to make code a bit simpler.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
---
 drivers/phy/broadcom/phy-brcm-sata.c | 21 +++++++--------------
 1 file changed, 7 insertions(+), 14 deletions(-)

diff --git a/drivers/phy/broadcom/phy-brcm-sata.c b/drivers/phy/broadcom/phy-brcm-sata.c
index ed9e18791ec9..228100357054 100644
--- a/drivers/phy/broadcom/phy-brcm-sata.c
+++ b/drivers/phy/broadcom/phy-brcm-sata.c
@@ -751,11 +751,11 @@ static int brcm_sata_phy_probe(struct platform_device *pdev)
 {
 	const char *rxaeq_mode;
 	struct device *dev = &pdev->dev;
-	struct device_node *dn = dev->of_node, *child;
+	struct device_node *dn = dev->of_node;
 	const struct of_device_id *of_id;
 	struct brcm_sata_phy *priv;
 	struct phy_provider *provider;
-	int ret, count = 0;
+	int count = 0;
 
 	if (of_get_child_count(dn) == 0)
 		return -ENODEV;
@@ -782,26 +782,23 @@ static int brcm_sata_phy_probe(struct platform_device *pdev)
 			return PTR_ERR(priv->ctrl_base);
 	}
 
-	for_each_available_child_of_node(dn, child) {
+	for_each_available_child_of_node_scoped(dn, child) {
 		unsigned int id;
 		struct brcm_sata_port *port;
 
 		if (of_property_read_u32(child, "reg", &id)) {
 			dev_err(dev, "missing reg property in node %pOFn\n",
 					child);
-			ret = -EINVAL;
-			goto put_child;
+			return -EINVAL;
 		}
 
 		if (id >= MAX_PORTS) {
 			dev_err(dev, "invalid reg: %u\n", id);
-			ret = -EINVAL;
-			goto put_child;
+			return -EINVAL;
 		}
 		if (priv->phys[id].phy) {
 			dev_err(dev, "already registered port %u\n", id);
-			ret = -EINVAL;
-			goto put_child;
+			return -EINVAL;
 		}
 
 		port = &priv->phys[id];
@@ -822,8 +819,7 @@ static int brcm_sata_phy_probe(struct platform_device *pdev)
 		port->ssc_en = of_property_read_bool(child, "brcm,enable-ssc");
 		if (IS_ERR(port->phy)) {
 			dev_err(dev, "failed to create PHY\n");
-			ret = PTR_ERR(port->phy);
-			goto put_child;
+			return PTR_ERR(port->phy);
 		}
 
 		phy_set_drvdata(port->phy, port);
@@ -839,9 +835,6 @@ static int brcm_sata_phy_probe(struct platform_device *pdev)
 	dev_info(dev, "registered %d port(s)\n", count);
 
 	return 0;
-put_child:
-	of_node_put(child);
-	return ret;
 }
 
 static struct platform_driver brcm_sata_phy_driver = {

-- 
2.43.0

[PATCH 03/11] phy: cadence: sierra: Simplify with scoped for each OF child loop

[Krzysztof Kozlowski]

Use scoped for_each_available_child_of_node_scoped() when iterating over
device nodes to make code a bit simpler.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
---
 drivers/phy/cadence/phy-cadence-sierra.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/phy/cadence/phy-cadence-sierra.c b/drivers/phy/cadence/phy-cadence-sierra.c
index 3010c9f24136..aeec6eb6be23 100644
--- a/drivers/phy/cadence/phy-cadence-sierra.c
+++ b/drivers/phy/cadence/phy-cadence-sierra.c
@@ -1366,7 +1366,7 @@ static int cdns_sierra_phy_probe(struct platform_device *pdev)
 	unsigned int id_value;
 	int ret, node = 0;
 	void __iomem *base;
-	struct device_node *dn = dev->of_node, *child;
+	struct device_node *dn = dev->of_node;
 
 	if (of_get_child_count(dn) == 0)
 		return -ENODEV;
@@ -1438,7 +1438,7 @@ static int cdns_sierra_phy_probe(struct platform_device *pdev)
 
 	sp->autoconf = of_property_read_bool(dn, "cdns,autoconf");
 
-	for_each_available_child_of_node(dn, child) {
+	for_each_available_child_of_node_scoped(dn, child) {
 		struct phy *gphy;
 
 		if (!(of_node_name_eq(child, "phy") ||
@@ -1452,7 +1452,6 @@ static int cdns_sierra_phy_probe(struct platform_device *pdev)
 			dev_err(dev, "failed to get reset %s\n",
 				child->full_name);
 			ret = PTR_ERR(sp->phys[node].lnk_rst);
-			of_node_put(child);
 			goto put_control;
 		}
 
@@ -1461,7 +1460,6 @@ static int cdns_sierra_phy_probe(struct platform_device *pdev)
 			if (ret) {
 				dev_err(dev, "missing property in node %s\n",
 					child->name);
-				of_node_put(child);
 				reset_control_put(sp->phys[node].lnk_rst);
 				goto put_control;
 			}
@@ -1475,7 +1473,6 @@ static int cdns_sierra_phy_probe(struct platform_device *pdev)
 			gphy = devm_phy_create(dev, child, &noop_ops);
 		if (IS_ERR(gphy)) {
 			ret = PTR_ERR(gphy);
-			of_node_put(child);
 			reset_control_put(sp->phys[node].lnk_rst);
 			goto put_control;
 		}

-- 
2.43.0

[PATCH 04/11] phy: hisilicon: usb2: Simplify with scoped for each OF child loop

[Krzysztof Kozlowski]

Use scoped for_each_child_of_node_scoped() when iterating over device
nodes to make code a bit simpler.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
---
 drivers/phy/hisilicon/phy-hisi-inno-usb2.c | 12 +++---------
 1 file changed, 3 insertions(+), 9 deletions(-)

diff --git a/drivers/phy/hisilicon/phy-hisi-inno-usb2.c b/drivers/phy/hisilicon/phy-hisi-inno-usb2.c
index c138cd4807d6..c843923252aa 100644
--- a/drivers/phy/hisilicon/phy-hisi-inno-usb2.c
+++ b/drivers/phy/hisilicon/phy-hisi-inno-usb2.c
@@ -138,7 +138,6 @@ static int hisi_inno_phy_probe(struct platform_device *pdev)
 	struct device_node *np = dev->of_node;
 	struct hisi_inno_phy_priv *priv;
 	struct phy_provider *provider;
-	struct device_node *child;
 	int i = 0;
 	int ret;
 
@@ -162,24 +161,20 @@ static int hisi_inno_phy_probe(struct platform_device *pdev)
 
 	priv->type = (uintptr_t) of_device_get_match_data(dev);
 
-	for_each_child_of_node(np, child) {
+	for_each_child_of_node_scoped(np, child) {
 		struct reset_control *rst;
 		struct phy *phy;
 
 		rst = of_reset_control_get_exclusive(child, NULL);
-		if (IS_ERR(rst)) {
-			of_node_put(child);
+		if (IS_ERR(rst))
 			return PTR_ERR(rst);
-		}
 
 		priv->ports[i].utmi_rst = rst;
 		priv->ports[i].priv = priv;
 
 		phy = devm_phy_create(dev, child, &hisi_inno_phy_ops);
-		if (IS_ERR(phy)) {
-			of_node_put(child);
+		if (IS_ERR(phy))
 			return PTR_ERR(phy);
-		}
 
 		phy_set_bus_width(phy, 8);
 		phy_set_drvdata(phy, &priv->ports[i]);
@@ -187,7 +182,6 @@ static int hisi_inno_phy_probe(struct platform_device *pdev)
 
 		if (i >= INNO_PHY_PORT_NUM) {
 			dev_warn(dev, "Support %d ports in maximum\n", i);
-			of_node_put(child);
 			break;
 		}
 	}

-- 
2.43.0

[PATCH 05/11] phy: mediatek: tphy: Simplify with scoped for each OF child loop

[Krzysztof Kozlowski]

Use scoped for_each_child_of_node_scoped() when iterating over device
nodes to make code a bit simpler.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
---
 drivers/phy/mediatek/phy-mtk-tphy.c | 30 +++++++++++-------------------
 1 file changed, 11 insertions(+), 19 deletions(-)

diff --git a/drivers/phy/mediatek/phy-mtk-tphy.c b/drivers/phy/mediatek/phy-mtk-tphy.c
index 25b86bbb9cec..3f7095ec5978 100644
--- a/drivers/phy/mediatek/phy-mtk-tphy.c
+++ b/drivers/phy/mediatek/phy-mtk-tphy.c
@@ -1577,12 +1577,11 @@ static int mtk_tphy_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct device_node *np = dev->of_node;
-	struct device_node *child_np;
 	struct phy_provider *provider;
 	struct resource *sif_res;
 	struct mtk_tphy *tphy;
 	struct resource res;
-	int port, retval;
+	int port;
 
 	tphy = devm_kzalloc(dev, sizeof(*tphy), GFP_KERNEL);
 	if (!tphy)
@@ -1623,25 +1622,23 @@ static int mtk_tphy_probe(struct platform_device *pdev)
 	}
 
 	port = 0;
-	for_each_child_of_node(np, child_np) {
+	for_each_child_of_node_scoped(np, child_np) {
 		struct mtk_phy_instance *instance;
 		struct clk_bulk_data *clks;
 		struct device *subdev;
 		struct phy *phy;
+		int retval;
 
 		instance = devm_kzalloc(dev, sizeof(*instance), GFP_KERNEL);
-		if (!instance) {
-			retval = -ENOMEM;
-			goto put_child;
-		}
+		if (!instance)
+			return -ENOMEM;
 
 		tphy->phys[port] = instance;
 
 		phy = devm_phy_create(dev, child_np, &mtk_tphy_ops);
 		if (IS_ERR(phy)) {
 			dev_err(dev, "failed to create phy\n");
-			retval = PTR_ERR(phy);
-			goto put_child;
+			return PTR_ERR(phy);
 		}
 
 		subdev = &phy->dev;
@@ -1649,14 +1646,12 @@ static int mtk_tphy_probe(struct platform_device *pdev)
 		if (retval) {
 			dev_err(subdev, "failed to get address resource(id-%d)\n",
 				port);
-			goto put_child;
+			return retval;
 		}
 
 		instance->port_base = devm_ioremap_resource(subdev, &res);
-		if (IS_ERR(instance->port_base)) {
-			retval = PTR_ERR(instance->port_base);
-			goto put_child;
-		}
+		if (IS_ERR(instance->port_base))
+			return PTR_ERR(instance->port_base);
 
 		instance->phy = phy;
 		instance->index = port;
@@ -1668,19 +1663,16 @@ static int mtk_tphy_probe(struct platform_device *pdev)
 		clks[1].id = "da_ref";  /* analog clock */
 		retval = devm_clk_bulk_get_optional(subdev, TPHY_CLKS_CNT, clks);
 		if (retval)
-			goto put_child;
+			return retval;
 
 		retval = phy_type_syscon_get(instance, child_np);
 		if (retval)
-			goto put_child;
+			return retval;
 	}
 
 	provider = devm_of_phy_provider_register(dev, mtk_phy_xlate);
 
 	return PTR_ERR_OR_ZERO(provider);
-put_child:
-	of_node_put(child_np);
-	return retval;
 }
 
 static struct platform_driver mtk_tphy_driver = {

-- 
2.43.0

[PATCH 06/11] phy: mediatek: xsphy: Simplify with scoped for each OF child loop

[Krzysztof Kozlowski]

Use scoped for_each_child_of_node_scoped() when iterating over device
nodes to make code a bit simpler.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
---
 drivers/phy/mediatek/phy-mtk-xsphy.c | 27 +++++++++------------------
 1 file changed, 9 insertions(+), 18 deletions(-)

diff --git a/drivers/phy/mediatek/phy-mtk-xsphy.c b/drivers/phy/mediatek/phy-mtk-xsphy.c
index 064fd0941727..7c248f5cfca5 100644
--- a/drivers/phy/mediatek/phy-mtk-xsphy.c
+++ b/drivers/phy/mediatek/phy-mtk-xsphy.c
@@ -432,12 +432,11 @@ static int mtk_xsphy_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct device_node *np = dev->of_node;
-	struct device_node *child_np;
 	struct phy_provider *provider;
 	struct resource *glb_res;
 	struct mtk_xsphy *xsphy;
 	struct resource res;
-	int port, retval;
+	int port;
 
 	xsphy = devm_kzalloc(dev, sizeof(*xsphy), GFP_KERNEL);
 	if (!xsphy)
@@ -471,37 +470,34 @@ static int mtk_xsphy_probe(struct platform_device *pdev)
 	device_property_read_u32(dev, "mediatek,src-coef", &xsphy->src_coef);
 
 	port = 0;
-	for_each_child_of_node(np, child_np) {
+	for_each_child_of_node_scoped(np, child_np) {
 		struct xsphy_instance *inst;
 		struct phy *phy;
+		int retval;
 
 		inst = devm_kzalloc(dev, sizeof(*inst), GFP_KERNEL);
-		if (!inst) {
-			retval = -ENOMEM;
-			goto put_child;
-		}
+		if (!inst)
+			return -ENOMEM;
 
 		xsphy->phys[port] = inst;
 
 		phy = devm_phy_create(dev, child_np, &mtk_xsphy_ops);
 		if (IS_ERR(phy)) {
 			dev_err(dev, "failed to create phy\n");
-			retval = PTR_ERR(phy);
-			goto put_child;
+			return PTR_ERR(phy);
 		}
 
 		retval = of_address_to_resource(child_np, 0, &res);
 		if (retval) {
 			dev_err(dev, "failed to get address resource(id-%d)\n",
 				port);
-			goto put_child;
+			return retval;
 		}
 
 		inst->port_base = devm_ioremap_resource(&phy->dev, &res);
 		if (IS_ERR(inst->port_base)) {
 			dev_err(dev, "failed to remap phy regs\n");
-			retval = PTR_ERR(inst->port_base);
-			goto put_child;
+			return PTR_ERR(inst->port_base);
 		}
 
 		inst->phy = phy;
@@ -512,17 +508,12 @@ static int mtk_xsphy_probe(struct platform_device *pdev)
 		inst->ref_clk = devm_clk_get(&phy->dev, "ref");
 		if (IS_ERR(inst->ref_clk)) {
 			dev_err(dev, "failed to get ref_clk(id-%d)\n", port);
-			retval = PTR_ERR(inst->ref_clk);
-			goto put_child;
+			return PTR_ERR(inst->ref_clk);
 		}
 	}
 
 	provider = devm_of_phy_provider_register(dev, mtk_phy_xlate);
 	return PTR_ERR_OR_ZERO(provider);
-
-put_child:
-	of_node_put(child_np);
-	return retval;
 }
 
 static struct platform_driver mtk_xsphy_driver = {

-- 
2.43.0

[PATCH 07/11] phy: qcom: qmp-pcie-msm8996: Simplify with scoped for each OF child loop

[Krzysztof Kozlowski]

Use scoped for_each_available_child_of_node_scoped() when iterating over
device nodes to make code a bit simpler.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
---
 drivers/phy/qualcomm/phy-qcom-qmp-pcie-msm8996.c | 11 +++--------
 1 file changed, 3 insertions(+), 8 deletions(-)

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-pcie-msm8996.c b/drivers/phy/qualcomm/phy-qcom-qmp-pcie-msm8996.c
index 5f89e3a3e54f..a7c65cfe31df 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp-pcie-msm8996.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-pcie-msm8996.c
@@ -725,7 +725,6 @@ static int qmp_pcie_msm8996_probe(struct platform_device *pdev)
 {
 	struct qcom_qmp *qmp;
 	struct device *dev = &pdev->dev;
-	struct device_node *child;
 	struct phy_provider *phy_provider;
 	void __iomem *serdes;
 	const struct qmp_phy_cfg *cfg = NULL;
@@ -773,13 +772,13 @@ static int qmp_pcie_msm8996_probe(struct platform_device *pdev)
 		return -ENOMEM;
 
 	id = 0;
-	for_each_available_child_of_node(dev->of_node, child) {
+	for_each_available_child_of_node_scoped(dev->of_node, child) {
 		/* Create per-lane phy */
 		ret = qmp_pcie_msm8996_create(dev, child, id, serdes, cfg);
 		if (ret) {
 			dev_err(dev, "failed to create lane%d phy, %d\n",
 				id, ret);
-			goto err_node_put;
+			return ret;
 		}
 
 		/*
@@ -790,7 +789,7 @@ static int qmp_pcie_msm8996_probe(struct platform_device *pdev)
 		if (ret) {
 			dev_err(qmp->dev,
 				"failed to register pipe clock source\n");
-			goto err_node_put;
+			return ret;
 		}
 
 		id++;
@@ -799,10 +798,6 @@ static int qmp_pcie_msm8996_probe(struct platform_device *pdev)
 	phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
 
 	return PTR_ERR_OR_ZERO(phy_provider);
-
-err_node_put:
-	of_node_put(child);
-	return ret;
 }
 
 static struct platform_driver qmp_pcie_msm8996_driver = {

-- 
2.43.0

[PATCH 08/11] phy: ti: am654-serdes: Use scoped device node handling to simplify error paths

[Krzysztof Kozlowski]

Obtain the device node reference with scoped/cleanup.h to reduce error
handling and make the code a bit simpler.

Unlike in other typical of_node_get+syscon_node_to_regmap cases, the
reference cannot be dropped immediately after syscon_node_to_regmap(),
because further part of probe() uses it.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
---
 drivers/phy/ti/phy-am654-serdes.c | 50 +++++++++++++--------------------------
 1 file changed, 17 insertions(+), 33 deletions(-)

diff --git a/drivers/phy/ti/phy-am654-serdes.c b/drivers/phy/ti/phy-am654-serdes.c
index 673449607c02..3bf3aff4b1c7 100644
--- a/drivers/phy/ti/phy-am654-serdes.c
+++ b/drivers/phy/ti/phy-am654-serdes.c
@@ -7,6 +7,7 @@
  */
 
 #include <dt-bindings/phy/phy.h>
+#include <linux/cleanup.h>
 #include <linux/clk.h>
 #include <linux/clk-provider.h>
 #include <linux/delay.h>
@@ -644,7 +645,6 @@ static int serdes_am654_clk_register(struct serdes_am654 *am654_phy,
 	struct device_node *node = am654_phy->of_node;
 	struct device *dev = am654_phy->dev;
 	struct serdes_am654_clk_mux *mux;
-	struct device_node *regmap_node;
 	const char **parent_names;
 	struct clk_init_data *init;
 	unsigned int num_parents;
@@ -652,7 +652,6 @@ static int serdes_am654_clk_register(struct serdes_am654 *am654_phy,
 	const __be32 *addr;
 	unsigned int reg;
 	struct clk *clk;
-	int ret = 0;
 
 	mux = devm_kzalloc(dev, sizeof(*mux), GFP_KERNEL);
 	if (!mux)
@@ -660,41 +659,30 @@ static int serdes_am654_clk_register(struct serdes_am654 *am654_phy,
 
 	init = &mux->clk_data;
 
-	regmap_node = of_parse_phandle(node, "ti,serdes-clk", 0);
-	if (!regmap_node) {
-		dev_err(dev, "Fail to get serdes-clk node\n");
-		ret = -ENODEV;
-		goto out_put_node;
-	}
+	struct device_node *regmap_node __free(device_node) =
+		of_parse_phandle(node, "ti,serdes-clk", 0);
+	if (!regmap_node)
+		return dev_err_probe(dev, -ENODEV, "Fail to get serdes-clk node\n");
 
 	regmap = syscon_node_to_regmap(regmap_node->parent);
-	if (IS_ERR(regmap)) {
-		dev_err(dev, "Fail to get Syscon regmap\n");
-		ret = PTR_ERR(regmap);
-		goto out_put_node;
-	}
+	if (IS_ERR(regmap))
+		return dev_err_probe(dev, PTR_ERR(regmap),
+				     "Fail to get Syscon regmap\n");
 
 	num_parents = of_clk_get_parent_count(node);
-	if (num_parents < 2) {
-		dev_err(dev, "SERDES clock must have parents\n");
-		ret = -EINVAL;
-		goto out_put_node;
-	}
+	if (num_parents < 2)
+		return dev_err_probe(dev, -EINVAL, "SERDES clock must have parents\n");
 
 	parent_names = devm_kzalloc(dev, (sizeof(char *) * num_parents),
 				    GFP_KERNEL);
-	if (!parent_names) {
-		ret = -ENOMEM;
-		goto out_put_node;
-	}
+	if (!parent_names)
+		return -ENOMEM;
 
 	of_clk_parent_fill(node, parent_names, num_parents);
 
 	addr = of_get_address(regmap_node, 0, NULL, NULL);
-	if (!addr) {
-		ret = -EINVAL;
-		goto out_put_node;
-	}
+	if (!addr)
+		return -EINVAL;
 
 	reg = be32_to_cpu(*addr);
 
@@ -710,16 +698,12 @@ static int serdes_am654_clk_register(struct serdes_am654 *am654_phy,
 	mux->hw.init = init;
 
 	clk = devm_clk_register(dev, &mux->hw);
-	if (IS_ERR(clk)) {
-		ret = PTR_ERR(clk);
-		goto out_put_node;
-	}
+	if (IS_ERR(clk))
+		return PTR_ERR(clk);
 
 	am654_phy->clks[clock_num] = clk;
 
-out_put_node:
-	of_node_put(regmap_node);
-	return ret;
+	return 0;
 }
 
 static const struct of_device_id serdes_am654_id_table[] = {

-- 
2.43.0

[PATCH 09/11] phy: ti: gmii-sel: Simplify with dev_err_probe()

[Krzysztof Kozlowski]

Use dev_err_probe() to avoid dmesg flood on actual defer.  This makes
the code also simpler.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
---
 drivers/phy/ti/phy-gmii-sel.c | 16 ++++++----------
 1 file changed, 6 insertions(+), 10 deletions(-)

diff --git a/drivers/phy/ti/phy-gmii-sel.c b/drivers/phy/ti/phy-gmii-sel.c
index b30bf740e2e0..103b266fec77 100644
--- a/drivers/phy/ti/phy-gmii-sel.c
+++ b/drivers/phy/ti/phy-gmii-sel.c
@@ -468,11 +468,9 @@ static int phy_gmii_sel_probe(struct platform_device *pdev)
 	priv->regmap = syscon_node_to_regmap(node->parent);
 	if (IS_ERR(priv->regmap)) {
 		priv->regmap = device_node_to_regmap(node);
-		if (IS_ERR(priv->regmap)) {
-			ret = PTR_ERR(priv->regmap);
-			dev_err(dev, "Failed to get syscon %d\n", ret);
-			return ret;
-		}
+		if (IS_ERR(priv->regmap))
+			return dev_err_probe(dev, PTR_ERR(priv->regmap),
+					     "Failed to get syscon\n");
 		priv->no_offset = true;
 	}
 
@@ -485,11 +483,9 @@ static int phy_gmii_sel_probe(struct platform_device *pdev)
 	priv->phy_provider =
 		devm_of_phy_provider_register(dev,
 					      phy_gmii_sel_of_xlate);
-	if (IS_ERR(priv->phy_provider)) {
-		ret = PTR_ERR(priv->phy_provider);
-		dev_err(dev, "Failed to create phy provider %d\n", ret);
-		return ret;
-	}
+	if (IS_ERR(priv->phy_provider))
+		return dev_err_probe(dev, PTR_ERR(priv->phy_provider),
+				     "Failed to create phy provider\n");
 
 	return 0;
 }

-- 
2.43.0

[PATCH 10/11] phy: ti: j721e-wiz: Drop OF node reference earlier for simpler code

[Krzysztof Kozlowski]

Drop OF node reference immediately after using it in
syscon_node_to_regmap(), which is both simpler and typical/expected
code pattern.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
---
 drivers/phy/ti/phy-j721e-wiz.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/phy/ti/phy-j721e-wiz.c b/drivers/phy/ti/phy-j721e-wiz.c
index bb16fdfe63df..d0f3ead3fc80 100644
--- a/drivers/phy/ti/phy-j721e-wiz.c
+++ b/drivers/phy/ti/phy-j721e-wiz.c
@@ -1179,14 +1179,13 @@ static int wiz_clock_probe(struct wiz *wiz, struct device_node *node)
 
 		ret = wiz_mux_of_clk_register(wiz, clk_node, wiz->mux_sel_field[i],
 					      clk_mux_sel[i].table);
+		of_node_put(clk_node);
 		if (ret) {
 			dev_err_probe(dev, ret, "Failed to register %s clock\n",
 				      node_name);
-			of_node_put(clk_node);
 			goto err;
 		}
 
-		of_node_put(clk_node);
 	}
 
 	for (i = 0; i < wiz->clk_div_sel_num; i++) {
@@ -1199,14 +1198,12 @@ static int wiz_clock_probe(struct wiz *wiz, struct device_node *node)
 
 		ret = wiz_div_clk_register(wiz, clk_node, wiz->div_sel_field[i],
 					   clk_div_sel[i].table);
+		of_node_put(clk_node);
 		if (ret) {
 			dev_err_probe(dev, ret, "Failed to register %s clock\n",
 				      node_name);
-			of_node_put(clk_node);
 			goto err;
 		}
-
-		of_node_put(clk_node);
 	}
 
 	return 0;

-- 
2.43.0

[PATCH 11/11] phy: ti: j721e-wiz: Simplify with scoped for each OF child loop

[Krzysztof Kozlowski]

Use scoped for_each_child_of_node_scoped() when iterating over device
nodes to make code a bit simpler.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
---
 drivers/phy/ti/phy-j721e-wiz.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/phy/ti/phy-j721e-wiz.c b/drivers/phy/ti/phy-j721e-wiz.c
index d0f3ead3fc80..a6c0c5607ffd 100644
--- a/drivers/phy/ti/phy-j721e-wiz.c
+++ b/drivers/phy/ti/phy-j721e-wiz.c
@@ -1404,7 +1404,7 @@ MODULE_DEVICE_TABLE(of, wiz_id_table);
 
 static int wiz_get_lane_phy_types(struct device *dev, struct wiz *wiz)
 {
-	struct device_node *serdes, *subnode;
+	struct device_node *serdes;
 
 	serdes = of_get_child_by_name(dev->of_node, "serdes");
 	if (!serdes) {
@@ -1412,7 +1412,7 @@ static int wiz_get_lane_phy_types(struct device *dev, struct wiz *wiz)
 		return -EINVAL;
 	}
 
-	for_each_child_of_node(serdes, subnode) {
+	for_each_child_of_node_scoped(serdes, subnode) {
 		u32 reg, num_lanes = 1, phy_type = PHY_NONE;
 		int ret, i;
 
@@ -1422,7 +1422,6 @@ static int wiz_get_lane_phy_types(struct device *dev, struct wiz *wiz)
 
 		ret = of_property_read_u32(subnode, "reg", &reg);
 		if (ret) {
-			of_node_put(subnode);
 			dev_err(dev,
 				"%s: Reading \"reg\" from \"%s\" failed: %d\n",
 				__func__, subnode->name, ret);

-- 
2.43.0

Re: [PATCH 07/11] phy: qcom: qmp-pcie-msm8996: Simplify with scoped for each OF child loop

[Dmitry Baryshkov]

On Mon, Aug 26, 2024 at 12:07:23PM GMT, Krzysztof Kozlowski wrote:
> Use scoped for_each_available_child_of_node_scoped() when iterating over
> device nodes to make code a bit simpler.
> 
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
> ---
>  drivers/phy/qualcomm/phy-qcom-qmp-pcie-msm8996.c | 11 +++--------
>  1 file changed, 3 insertions(+), 8 deletions(-)
> 

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>


-- 
With best wishes
Dmitry

Re: [PATCH 01/11] phy: broadcom: bcm-cygnus-pcie: Simplify with scoped for each OF child loop

[Florian Fainelli]

On 8/26/24 03:07, Krzysztof Kozlowski wrote:
> Use scoped for_each_available_child_of_node_scoped() when iterating over
> device nodes to make code a bit simpler.
> 
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
-- 
Florian

Re: [PATCH 02/11] phy: broadcom: brcm-sata: Simplify with scoped for each OF child loop

[Florian Fainelli]

On 8/26/24 03:07, Krzysztof Kozlowski wrote:
> Use scoped for_each_available_child_of_node_scoped() when iterating over
> device nodes to make code a bit simpler.
> 
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
-- 
Florian

Re: [PATCH 00/11] phy: simplify with cleanup.h and few other ideas

[Vinod Koul]

On Mon, 26 Aug 2024 12:07:16 +0200, Krzysztof Kozlowski wrote:
> Make code simpler with scoped/cleanup.h/dev_err_probe.
> 
> Best regards,
> Krzysztof
> 

Applied, thanks!

[01/11] phy: broadcom: bcm-cygnus-pcie: Simplify with scoped for each OF child loop
        commit: e33525de6c3c7780564e0859ea6daef27309995b
[02/11] phy: broadcom: brcm-sata: Simplify with scoped for each OF child loop
        commit: a7f1dbf479d2a3cbf2a25bd186bbe15efd17d849
[03/11] phy: cadence: sierra: Simplify with scoped for each OF child loop
        commit: 612f9fcb435fdc9abd46b6339c9000cef6d323a2
[04/11] phy: hisilicon: usb2: Simplify with scoped for each OF child loop
        commit: 93cab07a02f08e4a2837dd22280b741ba0a7a541
[05/11] phy: mediatek: tphy: Simplify with scoped for each OF child loop
        commit: d2714416770ed0cecaf69eaff34d20817f2c3bea
[06/11] phy: mediatek: xsphy: Simplify with scoped for each OF child loop
        commit: 77df35acd182a23c117a937ffd6b0830a5428649
[07/11] phy: qcom: qmp-pcie-msm8996: Simplify with scoped for each OF child loop
        commit: 608863e1e600a4d91b00dddd6ff11eda1cbebaa5
[08/11] phy: ti: am654-serdes: Use scoped device node handling to simplify error paths
        commit: 29b44a38503856952862c710d47d933c0173fd04
[09/11] phy: ti: gmii-sel: Simplify with dev_err_probe()
        commit: 27a4046255377eb0faab5c41fd271b1acab1ac41
[10/11] phy: ti: j721e-wiz: Drop OF node reference earlier for simpler code
        commit: afd7aaf3ecaf1b247db1294ef0687fb3cb530213
[11/11] phy: ti: j721e-wiz: Simplify with scoped for each OF child loop
        commit: 0d5a213c2eae880e0f7f8bc252314bae194d68d8

Best regards,
-- 
~Vinod