linux-kernel - [PATCH] PCI: xilinx: Fix return value in case of error

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Message-Id: <1468491046-1427-1-git-send-email-christophe.jaillet@wanadoo.fr>
Date:	Thu, 14 Jul 2016 12:10:46 +0200
From:	Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:	bhelgaas@...gle.com, michal.simek@...inx.com,
	soren.brinkmann@...inx.com, bharat.kumar.gogada@...inx.com,
	rgummal@...inx.com, arnd@...db.de, jiang.liu@...ux.intel.com,
	grygorii.strashko@...com, russell.joyce@...k.ac.uk,
	lorenzo.pieralisi@....com
Cc:	linux-pci@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
	Christophe JAILLET <christophe.jaillet@...adoo.fr>
Subject: [PATCH] PCI: xilinx: Fix return value in case of error

In function 'xilinx_pcie_init_irq_domain', the pattern used to check and
return error is:

   if (!var) {
      dev_err(...);
      return PTR_ERR(var);
   }

So the returned value in case of error is always 0, which means 'success'.
Change it to return -ENODEV instead.

Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
 drivers/pci/host/pcie-xilinx.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/pci/host/pcie-xilinx.c b/drivers/pci/host/pcie-xilinx.c
index 4703aa3..a30e016 100644
--- a/drivers/pci/host/pcie-xilinx.c
+++ b/drivers/pci/host/pcie-xilinx.c
@@ -550,7 +550,7 @@ static int xilinx_pcie_init_irq_domain(struct xilinx_pcie_port *port)
 	pcie_intc_node = of_get_next_child(node, NULL);
 	if (!pcie_intc_node) {
 		dev_err(dev, "No PCIe Intc node found\n");
-		return PTR_ERR(pcie_intc_node);
+		return -ENODEV;
 	}
 
 	port->irq_domain = irq_domain_add_linear(pcie_intc_node, 4,
@@ -558,7 +558,7 @@ static int xilinx_pcie_init_irq_domain(struct xilinx_pcie_port *port)
 						 port);
 	if (!port->irq_domain) {
 		dev_err(dev, "Failed to get a INTx IRQ domain\n");
-		return PTR_ERR(port->irq_domain);
+		return -ENODEV;
 	}
 
 	/* Setup MSI */
@@ -569,7 +569,7 @@ static int xilinx_pcie_init_irq_domain(struct xilinx_pcie_port *port)
 							 &xilinx_pcie_msi_chip);
 		if (!port->irq_domain) {
 			dev_err(dev, "Failed to get a MSI IRQ domain\n");
-			return PTR_ERR(port->irq_domain);
+			return -ENODEV;
 		}
 
 		xilinx_pcie_enable_msi(port);
-- 
2.7.4


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