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authorZhang Rui <[email protected]>2014-03-11 22:40:27 +0800
committerRafael J. Wysocki <[email protected]>2014-03-11 21:22:10 +0100
commit89935315f192abf7068d0044cefc84f162c3c81f (patch)
tree8536ce3ec6e064e3466fff7711390047872e8051 /net/unix/af_unix.c
parentfa389e220254c69ffae0d403eac4146171062d08 (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 <[email protected]> Reported-and-tested-by: Markus Trippelsdorf <[email protected]> Reported-and-tested-by: Julian Wollrath <[email protected]> Reported-and-tested-by: Paul Bolle <[email protected]> [rjw: Changelog] Signed-off-by: Rafael J. Wysocki <[email protected]>
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