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| author | Matthew Wilcox <matthew@wil.cx> | 2007-10-14 10:13:31 -0400 |
|---|---|---|
| committer | Kyle McMartin <kyle@shortfin.cabal.ca> | 2007-10-18 12:34:22 -0700 |
| commit | 9611f61eb5baf22b6b6ed46c2c196c10e1fade6a (patch) | |
| tree | 30bd8d782abc42a6f8b553f4c33bbba2dc8f9a31 /drivers/parisc | |
| parent | 26f0324922e50e0ef7677aaf96287b862c2fec61 (diff) | |
| download | linux-9611f61eb5baf22b6b6ed46c2c196c10e1fade6a.tar.gz linux-9611f61eb5baf22b6b6ed46c2c196c10e1fade6a.tar.bz2 linux-9611f61eb5baf22b6b6ed46c2c196c10e1fade6a.zip | |
[PARISC] Fix infinite loop in /proc/iomem
pcibios_link_hba_resources() could corrupt the resource tree by inserting
resources in the wrong place. Fix this by calling pci_claim_resource()
for PCI-PCI bridges. Delete pcibios_link_hba_resources as we shouldn't
need it any more. Also get rid of lba_claim_dev_resources() and just
call pci_claim_resource() directly.
Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
Diffstat (limited to 'drivers/parisc')
| -rw-r--r-- | drivers/parisc/lba_pci.c | 51 |
1 files changed, 7 insertions, 44 deletions
diff --git a/drivers/parisc/lba_pci.c b/drivers/parisc/lba_pci.c index 5b86ee5c1eeb..5eace9e66e14 100644 --- a/drivers/parisc/lba_pci.c +++ b/drivers/parisc/lba_pci.c @@ -557,44 +557,6 @@ lba_bios_init(void) #ifdef CONFIG_64BIT /* -** Determine if a device is already configured. -** If so, reserve it resources. -** -** Read PCI cfg command register and see if I/O or MMIO is enabled. -** PAT has to enable the devices it's using. -** -** Note: resources are fixed up before we try to claim them. -*/ -static void -lba_claim_dev_resources(struct pci_dev *dev) -{ - u16 cmd; - int i, srch_flags; - - (void) pci_read_config_word(dev, PCI_COMMAND, &cmd); - - srch_flags = (cmd & PCI_COMMAND_IO) ? IORESOURCE_IO : 0; - if (cmd & PCI_COMMAND_MEMORY) - srch_flags |= IORESOURCE_MEM; - - if (!srch_flags) - return; - - for (i = 0; i <= PCI_ROM_RESOURCE; i++) { - if (dev->resource[i].flags & srch_flags) { - pci_claim_resource(dev, i); - DBG(" claimed %s %d [%lx,%lx]/%lx\n", - pci_name(dev), i, - dev->resource[i].start, - dev->resource[i].end, - dev->resource[i].flags - ); - } - } -} - - -/* * truncate_pat_collision: Deal with overlaps or outright collisions * between PAT PDC reported ranges. * @@ -653,7 +615,6 @@ truncate_pat_collision(struct resource *root, struct resource *new) } #else -#define lba_claim_dev_resources(dev) do { } while (0) #define truncate_pat_collision(r,n) (0) #endif @@ -684,8 +645,12 @@ lba_fixup_bus(struct pci_bus *bus) ** pci_alloc_primary_bus() mangles this. */ if (bus->self) { + int i; /* PCI-PCI Bridge */ pci_read_bridge_bases(bus); + for (i = PCI_BRIDGE_RESOURCES; i < PCI_NUM_RESOURCES; i++) { + pci_claim_resource(bus->self, i); + } } else { /* Host-PCI Bridge */ int err, i; @@ -803,6 +768,9 @@ lba_fixup_bus(struct pci_bus *bus) DBG("lba_fixup_bus() WTF? 0x%lx [%lx/%lx] XXX", res->flags, res->start, res->end); } + if ((i != PCI_ROM_RESOURCE) || + (res->flags & IORESOURCE_ROM_ENABLE)) + pci_claim_resource(dev, i); } #ifdef FBB_SUPPORT @@ -814,11 +782,6 @@ lba_fixup_bus(struct pci_bus *bus) bus->bridge_ctl &= ~(status & PCI_STATUS_FAST_BACK); #endif - if (is_pdc_pat()) { - /* Claim resources for PDC's devices */ - lba_claim_dev_resources(dev); - } - /* ** P2PB's have no IRQs. ignore them. */ |