linux-kernel - [PATCH 1/2] PCI: kirin: use dev_err

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Message-Id: <20240706-pcie-kirin-dev_err_probe-v1-1-56df797fb8ee@gmail.com>
Date: Sat, 06 Jul 2024 17:07:46 +0200
From: Javier Carrasco <javier.carrasco.cruz@...il.com>
To: Xiaowei Song <songxiaowei@...ilicon.com>, 
 Binghui Wang <wangbinghui@...ilicon.com>, 
 Lorenzo Pieralisi <lpieralisi@...nel.org>, 
 Krzysztof Wilczyński <kw@...ux.com>, 
 Rob Herring <robh@...nel.org>, 
 Jonathan Cameron <Jonathan.Cameron@...wei.com>, 
 Bjorn Helgaas <bhelgaas@...gle.com>
Cc: linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Javier Carrasco <javier.carrasco.cruz@...il.com>
Subject: [PATCH 1/2] PCI: kirin: use dev_err_probe() in probe error paths

dev_err_probe() is used in some probe error paths, yet the
"dev_err() + return" pattern is used in some others.

Use dev_err_probe() in all error paths with that construction.

Suggested-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>
Signed-off-by: Javier Carrasco <javier.carrasco.cruz@...il.com>
---
 drivers/pci/controller/dwc/pcie-kirin.c | 39 +++++++++++++--------------------
 1 file changed, 15 insertions(+), 24 deletions(-)

diff --git a/drivers/pci/controller/dwc/pcie-kirin.c b/drivers/pci/controller/dwc/pcie-kirin.c
index 0a29136491b8..da8091f6b22b 100644
--- a/drivers/pci/controller/dwc/pcie-kirin.c
+++ b/drivers/pci/controller/dwc/pcie-kirin.c
@@ -216,10 +216,8 @@ static int hi3660_pcie_phy_start(struct hi3660_pcie_phy *phy)
 
 	usleep_range(PIPE_CLK_WAIT_MIN, PIPE_CLK_WAIT_MAX);
 	reg_val = kirin_apb_phy_readl(phy, PCIE_APB_PHY_STATUS0);
-	if (reg_val & PIPE_CLK_STABLE) {
-		dev_err(dev, "PIPE clk is not stable\n");
-		return -EINVAL;
-	}
+	if (reg_val & PIPE_CLK_STABLE)
+		return dev_err_probe(dev, -EINVAL, "PIPE clk is not stable\n");
 
 	return 0;
 }
@@ -371,10 +369,9 @@ static int kirin_pcie_get_gpio_enable(struct kirin_pcie *pcie,
 	if (ret < 0)
 		return 0;
 
-	if (ret > MAX_PCI_SLOTS) {
-		dev_err(dev, "Too many GPIO clock requests!\n");
-		return -EINVAL;
-	}
+	if (ret > MAX_PCI_SLOTS)
+		return dev_err_probe(dev, -EINVAL,
+				     "Too many GPIO clock requests!\n");
 
 	pcie->n_gpio_clkreq = ret;
 
@@ -421,16 +418,14 @@ static int kirin_pcie_parse_port(struct kirin_pcie *pcie,
 			}
 
 			pcie->num_slots++;
-			if (pcie->num_slots > MAX_PCI_SLOTS) {
-				dev_err(dev, "Too many PCI slots!\n");
-				return -EINVAL;
-			}
+			if (pcie->num_slots > MAX_PCI_SLOTS)
+				return dev_err_probe(dev, -EINVAL,
+						     "Too many PCI slots!\n");
 
 			ret = of_pci_get_devfn(child);
-			if (ret < 0) {
-				dev_err(dev, "failed to parse devfn: %d\n", ret);
-				return ret;
-			}
+			if (ret < 0)
+				return dev_err_probe(dev, ret,
+						     "failed to parse devfn: %d\n", ret);
 
 			slot = PCI_SLOT(ret);
 
@@ -729,16 +724,12 @@ static int kirin_pcie_probe(struct platform_device *pdev)
 	struct dw_pcie *pci;
 	int ret;
 
-	if (!dev->of_node) {
-		dev_err(dev, "NULL node\n");
-		return -EINVAL;
-	}
+	if (!dev->of_node)
+		return dev_err_probe(dev, -EINVAL, "NULL node\n");
 
 	data = of_device_get_match_data(dev);
-	if (!data) {
-		dev_err(dev, "OF data missing\n");
-		return -EINVAL;
-	}
+	if (!data)
+		return dev_err_probe(dev, -EINVAL, "OF data missing\n");
 
 	kirin_pcie = devm_kzalloc(dev, sizeof(struct kirin_pcie), GFP_KERNEL);
 	if (!kirin_pcie)

-- 
2.40.1