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| author | Bjorn Helgaas <bhelgaas@google.com> | 2014-04-30 02:33:09 +0200 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2014-05-23 18:47:19 +0200 |
| commit | d1a313e4b6ccbb61c746ee10ac198970516e9afc (patch) | |
| tree | e068d34fbd33e5e56322c438f71de2497ac2423a /drivers/pci | |
| parent | PCI: Fail safely if we can't handle BARs larger than 4GB (diff) | |
| download | linux-d1a313e4b6ccbb61c746ee10ac198970516e9afc.tar.xz linux-d1a313e4b6ccbb61c746ee10ac198970516e9afc.zip | |
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>
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/probe.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index c7f8b717c2e7..afae3bf405fa 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -253,7 +253,7 @@ int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type, goto out; } - if ((sizeof(resource_size_t) < 8) && l) { + if ((sizeof(dma_addr_t) < 8) && l) { /* Address above 32-bit boundary; disable the BAR */ pci_write_config_dword(dev, pos, 0); pci_write_config_dword(dev, pos + 4, 0); |