Thread (4 messages) read the whole thread 4 messages, 4 authors, 2022-04-13

RE: [PATCH] phy: samsung: exynos5250-sata: fix missing device put in probe error paths

From: "Alim Akhtar" <alim.akhtar@samsung.com>
Date: 2022-03-11 01:55:13
Also in: linux-phy, linux-samsung-soc, lkml

Hi Krzysztof
-----Original Message-----
From: Krzysztof Kozlowski [mailto:krzysztof.kozlowski@canonical.com]
Sent: Wednesday, March 9, 2022 10:30 PM
To: Kishon Vijay Abraham I <redacted>; Vinod Koul
[off-list ref]; Krzysztof Kozlowski
[off-list ref]; Alim Akhtar
[off-list ref]; Miaoqian Lin [off-list ref]; linux-
phy@lists.infradead.org; linux-arm-kernel@lists.infradead.org; linux-
samsung-soc@vger.kernel.org; linux-kernel@vger.kernel.org
Subject: [PATCH] phy: samsung: exynos5250-sata: fix missing device put in
probe error paths

The actions of of_find_i2c_device_by_node() in probe function should be
reversed in error paths by putting the reference to obtained device.

Fixes: bcff4cba41bc ("PHY: Exynos: Add Exynos5250 SATA PHY driver")
Signed-off-by: Krzysztof Kozlowski <redacted>
Thanks for fixing this.

Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
quoted hunk ↗ jump to hunk
---

Rebased on top of (although it is independent, no conflicts):
https://lore.kernel.org/linux-samsung-soc/20220309124856.32632-1-
linmq006@gmail.com/T/#u
---
drivers/phy/samsung/phy-exynos5250-sata.c | 20 ++++++++++++++------
1 file changed, 14 insertions(+), 6 deletions(-)
diff --git a/drivers/phy/samsung/phy-exynos5250-sata.c
b/drivers/phy/samsung/phy-exynos5250-sata.c
index 6c305a3fe187..595adba5fb8f 100644
--- a/drivers/phy/samsung/phy-exynos5250-sata.c
+++ b/drivers/phy/samsung/phy-exynos5250-sata.c
@@ -196,20 +196,21 @@ static int exynos_sata_phy_probe(struct
platform_device *pdev)
	sata_phy->phyclk = devm_clk_get(dev, "sata_phyctrl");
	if (IS_ERR(sata_phy->phyclk)) {
		dev_err(dev, "failed to get clk for PHY\n");
-		return PTR_ERR(sata_phy->phyclk);
+		ret = PTR_ERR(sata_phy->phyclk);
+		goto put_dev;
	}

	ret = clk_prepare_enable(sata_phy->phyclk);
	if (ret < 0) {
		dev_err(dev, "failed to enable source clk\n");
-		return ret;
+		goto put_dev;
	}

	sata_phy->phy = devm_phy_create(dev, NULL,
&exynos_sata_phy_ops);
	if (IS_ERR(sata_phy->phy)) {
-		clk_disable_unprepare(sata_phy->phyclk);
		dev_err(dev, "failed to create PHY\n");
-		return PTR_ERR(sata_phy->phy);
+		ret = PTR_ERR(sata_phy->phy);
+		goto clk_disable;
	}

	phy_set_drvdata(sata_phy->phy, sata_phy); @@ -217,11 +218,18
@@ static int exynos_sata_phy_probe(struct platform_device *pdev)
	phy_provider = devm_of_phy_provider_register(dev,
					of_phy_simple_xlate);
	if (IS_ERR(phy_provider)) {
-		clk_disable_unprepare(sata_phy->phyclk);
-		return PTR_ERR(phy_provider);
+		ret = PTR_ERR(phy_provider);
+		goto clk_disable;
	}

	return 0;
+
+clk_disable:
+	clk_disable_unprepare(sata_phy->phyclk);
+put_dev:
+	put_device(&sata_phy->client->dev);
+
+	return ret;
}

static const struct of_device_id exynos_sata_phy_of_match[] = {
--
2.32.0


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