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PCI: Mark shadow copy of VGA ROM as IORESOURCE_PCI_FIXED 

A shadow copy of an option ROM is placed by the BIOS as a fixed address.
Set IORESOURCE_PCI_FIXED to indicate that we can't move the shadow copy.
This prevents warnings like the following when we assign resources:

  BAR 6: [??? 0x00000000 flags 0x2] has bogus alignment

This warning is emitted by pdev_sort_resources(), which already ignores
IORESOURCE_PCI_FIXED resources.

Link: http://lkml.kernel.org/r/CA+55aFyVMfTBB0oz_yx8+eQOEJnzGtCsYSj9QuhEpdZ9BHdq5A@mail.gmail.com
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Bjorn Helgaas 2016-03-01 11:32:29 -06:00
parent b894157145
commit 63e22924f5
2 changed files with 4 additions and 2 deletions
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3
arch/ia64/pci/fixup.c
View File

@ -61,7 +61,8 @@ static void pci_fixup_video(struct pci_dev *pdev)
if (!vga_default_device() || pdev == vga_default_device()) {
pci_read_config_word(pdev, PCI_COMMAND, &config);
if (config & (PCI_COMMAND_IO | PCI_COMMAND_MEMORY)) {
pdev->resource[PCI_ROM_RESOURCE].flags |= IORESOURCE_ROM_SHADOW;
pdev->resource[PCI_ROM_RESOURCE].flags |= IORESOURCE_ROM_SHADOW |
IORESOURCE_PCI_FIXED;
dev_printk(KERN_DEBUG, &pdev->dev, "Video device with shadowed ROM\n");
}
}

3
arch/x86/pci/fixup.c
View File

@ -336,7 +336,8 @@ static void pci_fixup_video(struct pci_dev *pdev)
if (!vga_default_device() || pdev == vga_default_device()) {
pci_read_config_word(pdev, PCI_COMMAND, &config);
if (config & (PCI_COMMAND_IO | PCI_COMMAND_MEMORY)) {
pdev->resource[PCI_ROM_RESOURCE].flags |= IORESOURCE_ROM_SHADOW;
pdev->resource[PCI_ROM_RESOURCE].flags |= IORESOURCE_ROM_SHADOW |
IORESOURCE_PCI_FIXED;
dev_printk(KERN_DEBUG, &pdev->dev, "Video device with shadowed ROM\n");
}
}