netdev - [PATCH 1/3] wilc1000: use goto labels on error path

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Date:   Fri, 6 Aug 2021 11:12:27 +0300
From:   Claudiu Beznea <claudiu.beznea@...rochip.com>
To:     <ajay.kathat@...rochip.com>, <kvalo@...eaurora.org>,
        <davem@...emloft.net>, <kuba@...nel.org>
CC:     <linux-wireless@...r.kernel.org>, <netdev@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        Claudiu Beznea <claudiu.beznea@...rochip.com>
Subject: [PATCH 1/3] wilc1000: use goto labels on error path

Use goto labels on error path for probe functions. This makes code easier
to read. With this introduce also netdev_cleanup and call it where
necessary.

Signed-off-by: Claudiu Beznea <claudiu.beznea@...rochip.com>
---
 drivers/net/wireless/microchip/wilc1000/sdio.c | 16 ++++++++++------
 drivers/net/wireless/microchip/wilc1000/spi.c  | 16 ++++++++++------
 2 files changed, 20 insertions(+), 12 deletions(-)

diff --git a/drivers/net/wireless/microchip/wilc1000/sdio.c b/drivers/net/wireless/microchip/wilc1000/sdio.c
index e14b9fc2c67a..d11f245542e7 100644
--- a/drivers/net/wireless/microchip/wilc1000/sdio.c
+++ b/drivers/net/wireless/microchip/wilc1000/sdio.c
@@ -129,10 +129,8 @@ static int wilc_sdio_probe(struct sdio_func *func,
 
 	ret = wilc_cfg80211_init(&wilc, &func->dev, WILC_HIF_SDIO,
 				 &wilc_hif_sdio);
-	if (ret) {
-		kfree(sdio_priv);
-		return ret;
-	}
+	if (ret)
+		goto free;
 
 	if (IS_ENABLED(CONFIG_WILC1000_HW_OOB_INTR)) {
 		struct device_node *np = func->card->dev.of_node;
@@ -150,13 +148,19 @@ static int wilc_sdio_probe(struct sdio_func *func,
 
 	wilc->rtc_clk = devm_clk_get(&func->card->dev, "rtc");
 	if (PTR_ERR_OR_ZERO(wilc->rtc_clk) == -EPROBE_DEFER) {
-		kfree(sdio_priv);
-		return -EPROBE_DEFER;
+		ret = -EPROBE_DEFER;
+		goto netdev_cleanup;
 	} else if (!IS_ERR(wilc->rtc_clk))
 		clk_prepare_enable(wilc->rtc_clk);
 
 	dev_info(&func->dev, "Driver Initializing success\n");
 	return 0;
+
+netdev_cleanup:
+	wilc_netdev_cleanup(wilc);
+free:
+	kfree(sdio_priv);
+	return ret;
 }
 
 static void wilc_sdio_remove(struct sdio_func *func)
diff --git a/drivers/net/wireless/microchip/wilc1000/spi.c b/drivers/net/wireless/microchip/wilc1000/spi.c
index 8e9aaf03a6fa..23d811b2b925 100644
--- a/drivers/net/wireless/microchip/wilc1000/spi.c
+++ b/drivers/net/wireless/microchip/wilc1000/spi.c
@@ -154,10 +154,8 @@ static int wilc_bus_probe(struct spi_device *spi)
 		return -ENOMEM;
 
 	ret = wilc_cfg80211_init(&wilc, &spi->dev, WILC_HIF_SPI, &wilc_hif_spi);
-	if (ret) {
-		kfree(spi_priv);
-		return ret;
-	}
+	if (ret)
+		goto free;
 
 	spi_set_drvdata(spi, wilc);
 	wilc->dev = &spi->dev;
@@ -166,12 +164,18 @@ static int wilc_bus_probe(struct spi_device *spi)
 
 	wilc->rtc_clk = devm_clk_get(&spi->dev, "rtc");
 	if (PTR_ERR_OR_ZERO(wilc->rtc_clk) == -EPROBE_DEFER) {
-		kfree(spi_priv);
-		return -EPROBE_DEFER;
+		ret = -EPROBE_DEFER;
+		goto netdev_cleanup;
 	} else if (!IS_ERR(wilc->rtc_clk))
 		clk_prepare_enable(wilc->rtc_clk);
 
 	return 0;
+
+netdev_cleanup:
+	wilc_netdev_cleanup(wilc);
+free:
+	kfree(spi_priv);
+	return ret;
 }
 
 static int wilc_bus_remove(struct spi_device *spi)
-- 
2.25.1