ACPI / init: Fix the ordering of acpi_reserve_resources()

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[ Upstream commit b9a5e5e18f ]

Since acpi_reserve_resources() is defined as a device_initcall(),
there's no guarantee that it will be executed in the right order
with respect to the rest of the ACPI initialization code.  On some
systems this leads to breakage if, for example, the address range
that should be reserved for the ACPI fixed registers is given to
the PCI host bridge instead if the race is won by the wrong code
path.

Fix this by turning acpi_reserve_resources() into a void function
and calling it directly from within the ACPI initialization sequence.

Reported-and-tested-by: George McCollister <george.mccollister@gmail.com>
Link: http://marc.info/?t=143092384600002&r=1&w=2
Cc: All applicable <stable@vger.kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>

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Rafael J. Wysocki 2015-05-07 21:19:39 +02:00 • committed by Sasha Levin

parent f991e4e397

commit beeaeeac0f

1 changed files with 2 additions and 4 deletions

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drivers/acpi/osl.c

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