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PCI: Reject BAR above 4GB if dma_addr_t is too small
We can only handle BARs above 4GB if dma_addr_t (not resource_size_t) is 64 bits wide. If we have a 64-bit resource_size_t and a 32-bit dma_addr_t, we can't deal with BARs above 4GB. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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@ -253,7 +253,7 @@ int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type,
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goto out;
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}
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if ((sizeof(resource_size_t) < 8) && l) {
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if ((sizeof(dma_addr_t) < 8) && l) {
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/* Address above 32-bit boundary; disable the BAR */
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pci_write_config_dword(dev, pos, 0);
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pci_write_config_dword(dev, pos + 4, 0);
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