From: Kulikov Vasiliy Date: Tue, 3 Aug 2010 15:42:34 +0000 (+0400) Subject: agp: intel-agp: do not use PCI resources before pci_enable_device() X-Git-Tag: firefly_0821_release~9833^2~636^2~59 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=96576a9e1a0cdb8a43d3af5846be0948f52b4460;p=firefly-linux-kernel-4.4.55.git agp: intel-agp: do not use PCI resources before pci_enable_device() 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: // @@ identifier x; identifier request ~= "pci_request.*|pci_resource.*"; @@ ( * x->irq | * x->resource | * request(x, ...) ) ... *pci_enable_device(x) // Signed-off-by: Kulikov Vasiliy Signed-off-by: Dave Airlie --- diff --git a/drivers/char/agp/intel-agp.c b/drivers/char/agp/intel-agp.c index 5bbc7be203a6..ddf5def1b0da 100644 --- a/drivers/char/agp/intel-agp.c +++ b/drivers/char/agp/intel-agp.c @@ -907,6 +907,17 @@ static int __devinit agp_intel_probe(struct pci_dev *pdev, dev_info(&pdev->dev, "Intel %s Chipset\n", intel_agp_chipsets[i].name); + /* + * If the device has not been properly setup, the following will catch + * the problem and should stop the system from crashing. + * 20030610 - hamish@zot.org + */ + if (pci_enable_device(pdev)) { + dev_err(&pdev->dev, "can't enable PCI device\n"); + agp_put_bridge(bridge); + return -ENODEV; + } + /* * The following fixes the case where the BIOS has "forgotten" to * provide an address range for the GART. @@ -921,17 +932,6 @@ static int __devinit agp_intel_probe(struct pci_dev *pdev, } } - /* - * If the device has not been properly setup, the following will catch - * the problem and should stop the system from crashing. - * 20030610 - hamish@zot.org - */ - if (pci_enable_device(pdev)) { - dev_err(&pdev->dev, "can't enable PCI device\n"); - agp_put_bridge(bridge); - return -ENODEV; - } - /* Fill in the mode register */ if (cap_ptr) { pci_read_config_dword(pdev,