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Rafael J. Wysocki authored
There is at least one BIOS with a DSDT containing a power resource object with a _PR0 entry pointing back to that power resource. In consequence, while registering that power resource acpi_bus_get_power_flags() sees that it depends on itself and tries to register it again, which leads to an infinitely deep recurrence. This problem was introduced by commit bf325f95 (ACPI / PM: Register power resource devices as soon as they are needed). To fix this problem use the observation that power resources cannot be power manageable and prevent acpi_bus_get_power_flags() from being called for power resource objects. References: https://bugzilla.kernel.org/show_bug.cgi?id=31872Reported-and-tested-by:
Pascal Dormeau <pdormeau@free.fr> Signed-off-by:
Rafael J. Wysocki <rjw@sisk.pl> Acked-by:
Len Brown <lenb@kernel.org> Cc: stable@kernel.org
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