From: Anton Blanchard <anton@samba.org>
We have IO BARs on ppc64 machines that begin at address 0. The current
pci probe code will ignore anything that starts at 0. Remove these checks.
---
drivers/pci/probe.c | 6 +++---
1 files changed, 3 insertions(+), 3 deletions(-)
diff -puN drivers/pci/probe.c~ppc64-bar-0-fix drivers/pci/probe.c
--- 25/drivers/pci/probe.c~ppc64-bar-0-fix 2004-02-02 22:36:57.000000000 -0800
+++ 25-akpm/drivers/pci/probe.c 2004-02-02 22:36:57.000000000 -0800
@@ -214,7 +214,7 @@ void __devinit pci_read_bridge_bases(str
limit |= (io_limit_hi << 16);
}
- if (base && base <= limit) {
+ if (base <= limit) {
res->flags = (io_base_lo & PCI_IO_RANGE_TYPE_MASK) | IORESOURCE_IO;
res->start = base;
res->end = limit + 0xfff;
@@ -225,7 +225,7 @@ void __devinit pci_read_bridge_bases(str
pci_read_config_word(dev, PCI_MEMORY_LIMIT, &mem_limit_lo);
base = (mem_base_lo & PCI_MEMORY_RANGE_MASK) << 16;
limit = (mem_limit_lo & PCI_MEMORY_RANGE_MASK) << 16;
- if (base && base <= limit) {
+ if (base <= limit) {
res->flags = (mem_base_lo & PCI_MEMORY_RANGE_TYPE_MASK) | IORESOURCE_MEM;
res->start = base;
res->end = limit + 0xfffff;
@@ -251,7 +251,7 @@ void __devinit pci_read_bridge_bases(str
}
#endif
}
- if (base && base <= limit) {
+ if (base <= limit) {
res->flags = (mem_base_lo & PCI_MEMORY_RANGE_TYPE_MASK) | IORESOURCE_MEM | IORESOURCE_PREFETCH;
res->start = base;
res->end = limit + 0xfffff;
_