From: Len Brown <len.brown@intel.com>

Signed-off-by: Len Brown <len.brown@intel.com>
---
quoted text
> i have hit this warning for the first time in January 2008:
...
quoted text
> that's why WARN_ON()s are so important - there's no way my automated 
> tools (or even i, when taking a casual look at the logs) could have 
> picked up that new ACPI Exception - if each subsystem has different 
> warnings (which change frequently) then it's sheer impossible to 
> automate the answer to the "does that log show any anomaly" question. 

Maybe something like this would help?
(totally untested)

-Len

diff --git a/drivers/acpi/utilities/utmisc.c b/drivers/acpi/utilities/utmisc.c
index 1f057b7..d53e82c 100644
--- a/drivers/acpi/utilities/utmisc.c
+++ b/drivers/acpi/utilities/utmisc.c
@@ -1028,6 +1028,7 @@ acpi_ut_error(char *module_name, u32 line_number, char *format, ...)
 {
 	va_list args;
 
+	warn_on_slowpath(module_name, line_number);
 	acpi_os_printf("ACPI Error (%s-%04d): ", module_name, line_number);
 
 	va_start(args, format);
@@ -1042,6 +1043,7 @@ acpi_ut_exception(char *module_name,
 {
 	va_list args;
 
+	warn_on_slowpath(module_name, line_number);
 	acpi_os_printf("ACPI Exception (%s-%04d): %s, ", module_name,
 		       line_number, acpi_format_exception(status));
 
@@ -1058,6 +1060,7 @@ acpi_ut_warning(char *module_name, u32 line_number, char *format, ...)
 {
 	va_list args;
 
+	warn_on_slowpath(module_name, line_number);
 	acpi_os_printf("ACPI Warning (%s-%04d): ", module_name, line_number);
 
 	va_start(args, format);
--
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