linux-kernel - [PATCH net-next 07/11] net: stmmac: platform: provide stmmac_pltfr_remove_no

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Message-Id: <20230621153650.440350-8-brgl@bgdev.pl>
Date:   Wed, 21 Jun 2023 17:36:46 +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 07/11] net: stmmac: platform: provide stmmac_pltfr_remove_no_dt()

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

Add a variant of stmmac_pltfr_remove() that only frees resources
allocated by stmmac_pltfr_probe() and - unlike stmmac_pltfr_remove() -
does not call stmmac_remove_config_dt().

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
---
 .../ethernet/stmicro/stmmac/stmmac_platform.c | 20 +++++++++++++++++--
 .../ethernet/stmicro/stmmac/stmmac_platform.h |  1 +
 2 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
index df417cdab8c1..58d5c5cc2269 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
@@ -762,6 +762,23 @@ int stmmac_pltfr_probe(struct platform_device *pdev,
 }
 EXPORT_SYMBOL_GPL(stmmac_pltfr_probe);
 
+/**
+ * stmmac_pltfr_remove_no_dt
+ * @pdev: pointer to the platform device
+ * Description: This undoes the effects of stmmac_pltfr_probe() by removing the
+ * driver and calling the platform's exit() callback.
+ */
+void stmmac_pltfr_remove_no_dt(struct platform_device *pdev)
+{
+	struct net_device *ndev = platform_get_drvdata(pdev);
+	struct stmmac_priv *priv = netdev_priv(ndev);
+	struct plat_stmmacenet_data *plat = priv->plat;
+
+	stmmac_dvr_remove(&pdev->dev);
+	stmmac_pltfr_exit(pdev, plat);
+}
+EXPORT_SYMBOL_GPL(stmmac_pltfr_remove_no_dt);
+
 /**
  * stmmac_pltfr_remove
  * @pdev: platform device pointer
@@ -774,8 +791,7 @@ void stmmac_pltfr_remove(struct platform_device *pdev)
 	struct stmmac_priv *priv = netdev_priv(ndev);
 	struct plat_stmmacenet_data *plat = priv->plat;
 
-	stmmac_dvr_remove(&pdev->dev);
-	stmmac_pltfr_exit(pdev, plat);
+	stmmac_pltfr_remove_no_dt(pdev);
 	stmmac_remove_config_dt(pdev, plat);
 }
 EXPORT_SYMBOL_GPL(stmmac_pltfr_remove);
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.h b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.h
index f968e658c9d2..af52d5aa2b9a 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.h
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.h
@@ -27,6 +27,7 @@ void stmmac_pltfr_exit(struct platform_device *pdev,
 int stmmac_pltfr_probe(struct platform_device *pdev,
 		       struct plat_stmmacenet_data *plat,
 		       struct stmmac_resources *res);
+void stmmac_pltfr_remove_no_dt(struct platform_device *pdev);
 void stmmac_pltfr_remove(struct platform_device *pdev);
 extern const struct dev_pm_ops stmmac_pltfr_pm_ops;
 
-- 
2.39.2