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PCI: Don't convert BAR address to resource if dma_addr_t is too small

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If dma_addr_t is too small to represent the BAR value,
pcibios_bus_to_resource() will fail, so just remember the BAR size directly
in the resource.  The resource is already marked UNSET, so we know the
address isn't valid anyway.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Bjorn Helgaas 2014-04-29 18:42:49 -06:00
parent d1a313e4b6
commit 72dc5601fe
1 changed files with 3 additions and 2 deletions
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5
drivers/pci/probe.c
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@ -258,9 +258,10 @@ int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type,
pci_write_config_dword(dev, pos, 0);
pci_write_config_dword(dev, pos + 4, 0);
res->flags |= IORESOURCE_UNSET;
region.start = 0;
region.end = sz64;
res->start = 0;
res->end = sz64;
bar_disabled = true;
goto out;
} else {
region.start = l64;
region.end = l64 + sz64;