From: Matthew Wilcox <matthew@wil.cx>
Date: Mon, 28 Jul 2008 17:39:00 +0000 (-0400)
Subject: PCI: handle 64-bit resources better on 32-bit machines
X-Git-Tag: v2.6.27-rc1~3^2~9
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cc5499c3a607a392e8a7adb934aaf14b2c6a3519;p=linux-2.6

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>
---

diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 3b690c3512..2036300658 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);