From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dmitry Torokhov Date: Fri, 14 Nov 2014 22:21:53 +0000 Subject: [PATCH] PCI: rcar: fix error handling of irq_of_parse_and_map Message-Id: <20141114222153.GA39494@dtor-ws> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Simon Horman Cc: Bjorn Helgaas , Phil Edworthy , linux-pci@vger.kernel.org, linux-sh@vger.kernel.org, linux-kernel@vger.kernel.org Return value of irq_of_parse_and_map() is unsigned int, with 0 indicating failure, so testing for negative result never works. Signed-off-by: Dmitry Torokhov --- Not tested, found by casual code inspection. drivers/pci/host/pcie-rcar.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/pci/host/pcie-rcar.c b/drivers/pci/host/pcie-rcar.c index 9b356c3..6ca976f 100644 --- a/drivers/pci/host/pcie-rcar.c +++ b/drivers/pci/host/pcie-rcar.c @@ -764,7 +764,7 @@ static int rcar_pcie_get_resources(struct platform_device *pdev, goto err_map_reg; i = irq_of_parse_and_map(pdev->dev.of_node, 0); - if (i < 0) { + if (!i) { dev_err(pcie->dev, "cannot get platform resources for msi interrupt\n"); err = -ENOENT; goto err_map_reg; @@ -772,7 +772,7 @@ static int rcar_pcie_get_resources(struct platform_device *pdev, pcie->msi.irq1 = i; i = irq_of_parse_and_map(pdev->dev.of_node, 1); - if (i < 0) { + if (!i) { dev_err(pcie->dev, "cannot get platform resources for msi interrupt\n"); err = -ENOENT; goto err_map_reg; -- 2.1.0.rc2.206.gedb03e5 -- Dmitry