[PATCH 10/11] uio: do not use PCI resources before pci_enable_device()
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From: Kulikov Vasiliy on 3 Aug 2010 11:50 IRQ and resource[] may not have correct values until after PCI hotplug setup occurs at pci_enable_device() time. The semantic match that finds this problem is as follows: // <smpl> @@ identifier x; identifier request ~= "pci_request.*|pci_resource.*"; @@ ( * x->irq | * x->resource | * request(x, ...) ) ... *pci_enable_device(x) // </smpl> Signed-off-by: Kulikov Vasiliy <segooon(a)gmail.com> --- drivers/uio/uio_pci_generic.c | 13 +++++++------ 1 files changed, 7 insertions(+), 6 deletions(-) diff --git a/drivers/uio/uio_pci_generic.c b/drivers/uio/uio_pci_generic.c index 85c9884..fc22e1e 100644 --- a/drivers/uio/uio_pci_generic.c +++ b/drivers/uio/uio_pci_generic.c @@ -128,12 +128,6 @@ static int __devinit probe(struct pci_dev *pdev, struct uio_pci_generic_dev *gdev; int err; - if (!pdev->irq) { - dev_warn(&pdev->dev, "No IRQ assigned to device: " - "no support for interrupts?\n"); - return -ENODEV; - } - err = pci_enable_device(pdev); if (err) { dev_err(&pdev->dev, "%s: pci_enable_device failed: %d\n", @@ -141,6 +135,13 @@ static int __devinit probe(struct pci_dev *pdev, return err; } + if (!pdev->irq) { + dev_warn(&pdev->dev, "No IRQ assigned to device: " + "no support for interrupts?\n"); + pci_disable_device(pdev); + return -ENODEV; + } + err = verify_pci_2_3(pdev); if (err) goto err_verify; -- 1.7.0.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |