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From: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
To: Jingoo Han <jingoohan1@gmail.com>,
	Gustavo Pimentel <gustavo.pimentel@synopsys.com>,
	Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
	Bjorn Helgaas <bhelgaas@google.com>
Cc: "linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"linux-arm-kernel@lists.infradead.org" 
	<linux-arm-kernel@lists.infradead.org>
Subject: [PATCH v2 4/5] PCI: dwc: Use devm_pci_alloc_host_bridge() to simplify the code
Date: Fri, 1 Mar 2019 05:06:04 +0000
Message-ID: <20190301125901.5ee7730c@xhacker.debian> (raw)
In-Reply-To: <20190301125510.4e2ee985@xhacker.debian>

Use devm_pci_alloc_host_bridge() to simplify the error code path.

Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
---
 .../pci/controller/dwc/pcie-designware-host.c | 21 +++++++------------
 1 file changed, 8 insertions(+), 13 deletions(-)

diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c
index 66569d0f3ab9..4831c12fee93 100644
--- a/drivers/pci/controller/dwc/pcie-designware-host.c
+++ b/drivers/pci/controller/dwc/pcie-designware-host.c
@@ -357,7 +357,7 @@ int dw_pcie_host_init(struct pcie_port *pp)
 		dev_err(dev, "Missing *config* reg space\n");
 	}
 
-	bridge = pci_alloc_host_bridge(0);
+	bridge = devm_pci_alloc_host_bridge(dev, 0);
 	if (!bridge)
 		return -ENOMEM;
 
@@ -368,7 +368,7 @@ int dw_pcie_host_init(struct pcie_port *pp)
 
 	ret = devm_request_pci_bus_resources(dev, &bridge->windows);
 	if (ret)
-		goto error;
+		return ret;
 
 	/* Get the I/O and memory ranges from DT */
 	resource_list_for_each_entry_safe(win, tmp, &bridge->windows) {
@@ -412,8 +412,7 @@ int dw_pcie_host_init(struct pcie_port *pp)
 						resource_size(pp->cfg));
 		if (!pci->dbi_base) {
 			dev_err(dev, "Error with ioremap\n");
-			ret = -ENOMEM;
-			goto error;
+			return -ENOMEM;
 		}
 	}
 
@@ -424,8 +423,7 @@ int dw_pcie_host_init(struct pcie_port *pp)
 					pp->cfg0_base, pp->cfg0_size);
 		if (!pp->va_cfg0_base) {
 			dev_err(dev, "Error with ioremap in function\n");
-			ret = -ENOMEM;
-			goto error;
+			return -ENOMEM;
 		}
 	}
 
@@ -435,8 +433,7 @@ int dw_pcie_host_init(struct pcie_port *pp)
 						pp->cfg1_size);
 		if (!pp->va_cfg1_base) {
 			dev_err(dev, "Error with ioremap\n");
-			ret = -ENOMEM;
-			goto error;
+			return -ENOMEM;
 		}
 	}
 
@@ -459,14 +456,14 @@ int dw_pcie_host_init(struct pcie_port *pp)
 			    pp->num_vectors == 0) {
 				dev_err(dev,
 					"Invalid number of vectors\n");
-				goto error;
+				return -EINVAL;
 			}
 		}
 
 		if (!pp->ops->msi_host_init) {
 			ret = dw_pcie_allocate_domains(pp);
 			if (ret)
-				goto error;
+				return ret;
 
 			if (pp->msi_irq)
 				irq_set_chained_handler_and_data(pp->msi_irq,
@@ -475,7 +472,7 @@ int dw_pcie_host_init(struct pcie_port *pp)
 		} else {
 			ret = pp->ops->msi_host_init(pp);
 			if (ret < 0)
-				goto error;
+				return ret;
 		}
 	}
 
@@ -515,8 +512,6 @@ int dw_pcie_host_init(struct pcie_port *pp)
 err_free_msi:
 	if (IS_ENABLED(CONFIG_PCI_MSI) && !pp->ops->msi_host_init)
 		dw_pcie_free_msi(pp);
-error:
-	pci_free_host_bridge(bridge);
 	return ret;
 }
 
-- 
2.20.1


  parent reply index

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-03-01  5:02 [PATCH v2 0/5] PCI: dwc: Support remove Jisheng Zhang
2019-03-01  5:03 ` [PATCH v2 1/5] PCI: dwc: Fix dw_pcie_free_msi() if msi_irq is invalid Jisheng Zhang
2019-03-13 10:05   ` Gustavo Pimentel
2019-03-01  5:04 ` [PATCH v2 2/5] PCI: dwc: Free the page for MSI IRQ in dw_pcie_free_msi() Jisheng Zhang
2019-03-13 10:12   ` Gustavo Pimentel
2019-03-01  5:05 ` [PATCH v2 3/5] PCI: dwc: Free MSI in the error code path of dw_pcie_host_init() Jisheng Zhang
2019-03-13 10:24   ` Gustavo Pimentel
2019-03-01  5:06 ` Jisheng Zhang [this message]
2019-03-13 10:37   ` [PATCH v2 4/5] PCI: dwc: Use devm_pci_alloc_host_bridge() to simplify the code Gustavo Pimentel
2019-03-01  5:06 ` [PATCH v2 5/5] PCI: dwc: Save root bus for driver remove Jisheng Zhang
2019-03-13 10:33   ` Gustavo Pimentel

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