From: Bjorn Helgaas <[EMAIL PROTECTED]>
ACPI address space descriptors contain _MIN, _MAX, and _LEN. _MIN and _MAX
are the bounds within which the region can be moved (this is clarified in
Table 6-38 of the ACPI 3.0 spec). We should use _LEN to determine the size
of the region, not _MAX - _MIN + 1.
Signed-off-by: Bjorn Helgaas <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
---
drivers/char/hpet.c | 5 +----
1 files changed, 1 insertion(+), 4 deletions(-)
diff -puN drivers/char/hpet.c~hpet-fix-acpi-memory-range-length-handling
drivers/char/hpet.c
--- devel/drivers/char/hpet.c~hpet-fix-acpi-memory-range-length-handling
2006-03-21 22:30:06.000000000 -0800
+++ devel-akpm/drivers/char/hpet.c 2006-03-21 22:30:06.000000000 -0800
@@ -925,11 +925,8 @@ static acpi_status hpet_resources(struct
status = acpi_resource_to_address64(res, &addr);
if (ACPI_SUCCESS(status)) {
- unsigned long size;
-
- size = addr.maximum - addr.minimum + 1;
hdp->hd_phys_address = addr.minimum;
- hdp->hd_address = ioremap(addr.minimum, size);
+ hdp->hd_address = ioremap(addr.minimum, addr.address_length);
if (hpet_is_known(hdp)) {
printk(KERN_DEBUG "%s: 0x%lx is busy\n",
_
-
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