PNPACPI: truncate _CRS windows with _LEN > _MAX - _MIN + 1

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The ACPI spec (sec 6.4.3.5 in v4.0) requires that for Address Space Resource
Descriptors, _LEN <= _MAX - _MIN + 1 in all cases, but there are BIOSes that
violate this.  We experimentally determined that Windows truncates the
resource so it doesn't extend past _MAX, so let's do the same thing in
Linux.

http://bugzilla.kernel.org/show_bug.cgi?id=15480

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Len Brown <len.brown@intel.com>

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Bjorn Helgaas 2010-03-25 10:32:49 -06:00 • committed by Len Brown

parent 2eaa9cfdf3

commit 3162b6f0c5

1 changed files with 30 additions and 12 deletions

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drivers/pnp/pnpacpi/rsparser.c

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