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Subject[PATCH 2/3] PCI: Handle 64-bit resources better on 32-bit machines
Date
If the kernel is configured to support 64-bit resources on a 32-bit
machine, we can support 64-bit BARs properly. Just change the condition
to check sizeof(resource_size_t) instead of BITS_PER_LONG.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
---
drivers/pci/probe.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 3b690c3..2036300 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -270,10 +270,10 @@ static int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type,
if (!sz64)
goto fail;

- if ((BITS_PER_LONG < 64) && (sz64 > 0x100000000ULL)) {
+ if ((sizeof(resource_size_t) < 8) && (sz64 > 0x100000000ULL)) {
dev_err(&dev->dev, "can't handle 64-bit BAR\n");
goto fail;
- } else if ((BITS_PER_LONG < 64) && l) {
+ } else if ((sizeof(resource_size_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);
--
1.5.5.4


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