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author | Zhang Rui <rui.zhang@intel.com> | 2014-03-11 22:40:27 +0800 |
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committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2014-03-11 21:22:10 +0100 |
commit | 89935315f192abf7068d0044cefc84f162c3c81f (patch) | |
tree | 8536ce3ec6e064e3466fff7711390047872e8051 /drivers/char | |
parent | fa389e220254c69ffae0d403eac4146171062d08 (diff) |
PNP / ACPI: proper handling of ACPI IO/Memory resource parsing failures
Before commit b355cee88e3b (ACPI / resources: ignore invalid ACPI
device resources), if acpi_dev_resource_memory()/acpi_dev_resource_io()
returns false, it means the the resource is not a memeory/IO resource.
But after commit b355cee88e3b, those functions return false if the
given memory/IO resource entry is invalid (the length of the resource
is zero).
This breaks pnpacpi_allocated_resource(), because it now recognizes
the invalid memory/io resources as resources of unknown type. Thus
users see confusing warning messages on machines with zero length
ACPI memory/IO resources.
Fix the problem by rearranging pnpacpi_allocated_resource() so that
it calls acpi_dev_resource_memory() for memory type and IO type
resources only, respectively.
Fixes: b355cee88e3b (ACPI / resources: ignore invalid ACPI device resources)
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Reported-and-tested-by: Markus Trippelsdorf <markus@trippelsdorf.de>
Reported-and-tested-by: Julian Wollrath <jwollrath@web.de>
Reported-and-tested-by: Paul Bolle <pebolle@tiscali.nl>
[rjw: Changelog]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/char')
0 files changed, 0 insertions, 0 deletions