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| author | Bjorn Helgaas <bhelgaas@google.com> | 2014-02-26 11:26:00 -0700 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2014-02-27 10:43:33 -0700 |
| commit | c83bd900aac38552b0d903588bbb084d3b26fe71 (patch) | |
| tree | f3ffd1cc8338df9f8449605acd70c35b6bcbd59d /drivers/pci | |
| parent | 29003beb7f15d3daa5a8f9afb8d007b64baa2357 (diff) | |
| download | linux-c83bd900aac38552b0d903588bbb084d3b26fe71.tar.bz2 | |
PCI: Mark 64-bit resource as IORESOURCE_UNSET if we only support 32-bit
If we don't support 64-bit addresses, i.e., CONFIG_PHYS_ADDR_T_64BIT is not
set, we can't deal with BARs above 4GB. In this case we already pretend
the BAR contained zero; this patch also sets IORESOURCE_UNSET so we can try
to reallocate it later.
I don't think this is exactly correct: what we care about here are *bus*
addresses, not CPU addresses, so the tests of sizeof(resource_size_t)
probably should be on sizeof(dma_addr_t) instead. But this is what's been
in -next, so we'll fix that later.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/probe.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index 6e34498ec9f0..78335efbbb74 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -252,6 +252,7 @@ int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type, /* Address above 32-bit boundary; disable the BAR */ 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; bar_disabled = true; |