Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
PCI: handle 64-bit resources better on 32-bit machines
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>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
authored by
Matthew Wilcox
and committed by
Jesse Barnes
cc5499c3
6ac665c6
+2
-2
drivers/pci/probe.c
+2
-2
drivers/pci/probe.c
···
270
270
if (!sz64)
271
271
goto fail;
272
272
273
-
if ((BITS_PER_LONG < 64) && (sz64 > 0x100000000ULL)) {
273
+
if ((sizeof(resource_size_t) < 8) && (sz64 > 0x100000000ULL)) {
274
274
dev_err(&dev->dev, "can't handle 64-bit BAR\n");
275
275
goto fail;
276
-
} else if ((BITS_PER_LONG < 64) && l) {
276
+
} else if ((sizeof(resource_size_t) < 8) && l) {
277
277
/* Address above 32-bit boundary; disable the BAR */
278
278
pci_write_config_dword(dev, pos, 0);
279
279
pci_write_config_dword(dev, pos + 4, 0);