since pr->id is unsigned, shouldn't something like
the patch below be applied?
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
---
diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c
index e36422a..75c0f76 100644
--- a/drivers/acpi/processor_core.c
+++ b/drivers/acpi/processor_core.c
@@ -667,7 +667,7 @@ static int __cpuinit acpi_processor_start(struct acpi_device *device)
return 0;
}
- BUG_ON((pr->id >= nr_cpu_ids) || (pr->id < 0));
+ BUG_ON((pr->id >= nr_cpu_ids) || ((unsigned long)pr->id < 0));
/*
* Buggy BIOS check
--
