linux-kernel - [PATCH] PCI: dra7xx: Added error handling in probe function when devm_phy

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Message-ID: <20240911171112.46322-2-riyandhiman14@gmail.com>
Date: Wed, 11 Sep 2024 22:41:13 +0530
From: Riyan Dhiman <riyandhiman14@...il.com>
To: vigneshr@...com,
	s-vadapalli@...com,
	lpieralisi@...nel.org,
	kw@...ux.com,
	bhelgaas@...gle.com
Cc: kishon@...nel.org,
	linux-omap@...r.kernel.org,
	linux-pci@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	Riyan Dhiman <riyandhiman14@...il.com>
Subject: [PATCH] PCI: dra7xx: Added error handling in probe function when devm_phy_get() fails

While creation of device link, if devm_phy_get() function fails then it directly
returns PTR_ERR without any cleanup of previous added device links.
Added goto statement when devm_phy_get() fails, to handle the cleanup of already
added device links.

Fixes: 7a4db656a635 (PCI: dra7xx: Create functional dependency between PCIe and PHY)
Signed-off-by: Riyan Dhiman <riyandhiman14@...il.com>
---
 drivers/pci/controller/dwc/pci-dra7xx.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/pci/controller/dwc/pci-dra7xx.c b/drivers/pci/controller/dwc/pci-dra7xx.c
index 4fe3b0cb72ec..c329d107b811 100644
--- a/drivers/pci/controller/dwc/pci-dra7xx.c
+++ b/drivers/pci/controller/dwc/pci-dra7xx.c
@@ -762,8 +762,10 @@ static int dra7xx_pcie_probe(struct platform_device *pdev)
 	for (i = 0; i < phy_count; i++) {
 		snprintf(name, sizeof(name), "pcie-phy%d", i);
 		phy[i] = devm_phy_get(dev, name);
-		if (IS_ERR(phy[i]))
-			return PTR_ERR(phy[i]);
+		if (IS_ERR(phy[i])) {
+			ret = PTR_ERR(phy[i]);
+			goto err_link;
+		}
 
 		link[i] = device_link_add(dev, &phy[i]->dev, DL_FLAG_STATELESS);
 		if (!link[i]) {
-- 
2.46.0