linux-kernel - [PATCH net-next v2 01/11] net: stmmac: platform: provide stmmac_pltfr

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Message-Id: <20230623100417.93592-2-brgl@bgdev.pl>
Date:   Fri, 23 Jun 2023 12:04:07 +0200
From:   Bartosz Golaszewski <brgl@...ev.pl>
To:     Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Jose Abreu <joabreu@...opsys.com>,
        "David S . Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Junxiao Chang <junxiao.chang@...el.com>,
        Vinod Koul <vkoul@...nel.org>,
        Bhupesh Sharma <bhupesh.sharma@...aro.org>
Cc:     netdev@...r.kernel.org, linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: [PATCH net-next v2 01/11] net: stmmac: platform: provide stmmac_pltfr_init()

From: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>

Provide a helper wrapper around calling the platform's init() callback.
This allows users to skip checking if the callback exists.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
---
 .../ethernet/stmicro/stmmac/stmmac_platform.c | 25 +++++++++++++++++--
 .../ethernet/stmicro/stmmac/stmmac_platform.h |  3 +++
 2 files changed, 26 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
index 3c6b55b60461..41ca4fc9f863 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
@@ -701,6 +701,25 @@ int stmmac_get_platform_resources(struct platform_device *pdev,
 }
 EXPORT_SYMBOL_GPL(stmmac_get_platform_resources);
 
+/**
+ * stmmac_pltfr_init
+ * @pdev: pointer to the platform device
+ * @plat: driver data platform structure
+ * Description: Call the platform's init callback (if any) and propagate
+ * the return value.
+ */
+int stmmac_pltfr_init(struct platform_device *pdev,
+		      struct plat_stmmacenet_data *plat)
+{
+	int ret = 0;
+
+	if (plat->init)
+		ret = plat->init(pdev, plat->bsp_priv);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(stmmac_pltfr_init);
+
 /**
  * stmmac_pltfr_remove
  * @pdev: platform device pointer
@@ -755,9 +774,11 @@ static int __maybe_unused stmmac_pltfr_resume(struct device *dev)
 	struct net_device *ndev = dev_get_drvdata(dev);
 	struct stmmac_priv *priv = netdev_priv(ndev);
 	struct platform_device *pdev = to_platform_device(dev);
+	int ret;
 
-	if (priv->plat->init)
-		priv->plat->init(pdev, priv->plat->bsp_priv);
+	ret = stmmac_pltfr_init(pdev, priv->plat->bsp_priv);
+	if (ret)
+		return ret;
 
 	return stmmac_resume(dev);
 }
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.h b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.h
index f7e457946681..6a2cd47fedcd 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.h
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.h
@@ -19,6 +19,9 @@ void stmmac_remove_config_dt(struct platform_device *pdev,
 int stmmac_get_platform_resources(struct platform_device *pdev,
 				  struct stmmac_resources *stmmac_res);
 
+int stmmac_pltfr_init(struct platform_device *pdev,
+		      struct plat_stmmacenet_data *plat);
+
 void stmmac_pltfr_remove(struct platform_device *pdev);
 extern const struct dev_pm_ops stmmac_pltfr_pm_ops;
 
-- 
2.39.2