Add a function to allocate and initialise the plat_stmmacenet_data
structure with default values.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
---
 drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c    |  2 +-
 drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c |  2 +-
 drivers/net/ethernet/stmicro/stmmac/stmmac.h         |  2 ++
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c    | 12 ++++++++++++
 drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c     |  2 +-
 .../net/ethernet/stmicro/stmmac/stmmac_platform.c    |  2 +-
 6 files changed, 18 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c
index b2194e414ec1..7e56fbc3e141 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c
@@ -1286,7 +1286,7 @@ static int intel_eth_pci_probe(struct pci_dev *pdev,
 	if (!intel_priv)
 		return -ENOMEM;
 
-	plat = devm_kzalloc(&pdev->dev, sizeof(*plat), GFP_KERNEL);
+	plat = stmmac_plat_dat_alloc(&pdev->dev);
 	if (!plat)
 		return -ENOMEM;
 
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c
index dd2fc39ec3e2..2d803fa37e21 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.c
@@ -559,7 +559,7 @@ static int loongson_dwmac_probe(struct pci_dev *pdev, const struct pci_device_id
 	struct loongson_data *ld;
 	int ret;
 
-	plat = devm_kzalloc(&pdev->dev, sizeof(*plat), GFP_KERNEL);
+	plat = stmmac_plat_dat_alloc(&pdev->dev);
 	if (!plat)
 		return -ENOMEM;
 
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac.h b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
index 0ea74c88a779..e9ed5086c049 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac.h
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
@@ -408,6 +408,8 @@ int stmmac_reinit_ringparam(struct net_device *dev, u32 rx_size, u32 tx_size);
 int stmmac_set_clk_tx_rate(void *bsp_priv, struct clk *clk_tx_i,
 			   phy_interface_t interface, int speed);
 
+struct plat_stmmacenet_data *stmmac_plat_dat_alloc(struct device *dev);
+
 static inline bool stmmac_xdp_is_enabled(struct stmmac_priv *priv)
 {
 	return !!priv->xdp_prog;
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index d202f604161e..400b4b955820 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -7555,6 +7555,18 @@ static void stmmac_unregister_devlink(struct stmmac_priv *priv)
 	devlink_free(priv->devlink);
 }
 
+struct plat_stmmacenet_data *stmmac_plat_dat_alloc(struct device *dev)
+{
+	struct plat_stmmacenet_data *plat_dat;
+
+	plat_dat = devm_kzalloc(dev, sizeof(*plat_dat), GFP_KERNEL);
+	if (!plat_dat)
+		return NULL;
+
+	return plat_dat;
+}
+EXPORT_SYMBOL_GPL(stmmac_plat_dat_alloc);
+
 /**
  * stmmac_dvr_probe
  * @device: device pointer
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c
index 94b3a3b27270..622cdbeca20f 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c
@@ -191,7 +191,7 @@ static int stmmac_pci_probe(struct pci_dev *pdev,
 	int ret;
 	int i;
 
-	plat = devm_kzalloc(&pdev->dev, sizeof(*plat), GFP_KERNEL);
+	plat = stmmac_plat_dat_alloc(&pdev->dev);
 	if (!plat)
 		return -ENOMEM;
 
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
index 6483d52b4c0f..38d574907a04 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
@@ -436,7 +436,7 @@ stmmac_probe_config_dt(struct platform_device *pdev, u8 *mac)
 	void *ret;
 	int rc;
 
-	plat = devm_kzalloc(&pdev->dev, sizeof(*plat), GFP_KERNEL);
+	plat = stmmac_plat_dat_alloc(&pdev->dev);
 	if (!plat)
 		return ERR_PTR(-ENOMEM);
 
-- 
2.47.3