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Revert "[POWERPC] Disable PCI IO/Mem on a device when resources can't be allocated"

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This reverts commit 553aa7659b at Ben H's
request, because it confused IORESOURCE_* flags with command register
bits.

Requested-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Paul Mackerras 2007-12-31 10:04:15 +11:00
parent d2d8cfc657
commit 533b1928b5
1 changed files with 3 additions and 10 deletions
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13
arch/powerpc/kernel/pci-common.c
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@ -1035,7 +1035,7 @@ static void __init pcibios_allocate_bus_resources(struct list_head *bus_list)
}
}
static inline int __devinit alloc_resource(struct pci_dev *dev, int idx)
static inline void __devinit alloc_resource(struct pci_dev *dev, int idx)
{
struct resource *pr, *r = &dev->resource[idx];
@ -1059,10 +1059,7 @@ static inline int __devinit alloc_resource(struct pci_dev *dev, int idx)
r->flags |= IORESOURCE_UNSET;
r->end -= r->start;
r->start = 0;
return -EBUSY;
}
return 0;
}
static void __init pcibios_allocate_resources(int pass)
@ -1084,12 +1081,8 @@ static void __init pcibios_allocate_resources(int pass)
disabled = !(command & PCI_COMMAND_IO);
else
disabled = !(command & PCI_COMMAND_MEMORY);
if (pass == disabled && alloc_resource(dev, idx)) {
command &= ~(r->flags & (IORESOURCE_IO |
IORESOURCE_MEM));
pci_write_config_word(dev,
PCI_COMMAND, command);
}
if (pass == disabled)
alloc_resource(dev, idx);
}
if (pass)
continue;