[PATCH v1 07/20] ACPICA: Implement ACPI_WARNING_ONCE and ACPI_ERROR_ONCE

["Rafael J. Wysocki" <rjw@rjwysocki.net>]

From: Vasily Khoruzhick <anarsoul@gmail.com>

ACPICA commit 2ad4e6e7c4118f4cdfcad321c930b836cec77406

In some cases it is not practical nor useful to nag user about some
firmware errors that they cannot fix. Add a macro that will print a
warning or error only once to be used in these cases.

Link: https://github.com/acpica/acpica/commit/2ad4e6e7
Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---
 include/acpi/acoutput.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/acpi/acoutput.h b/include/acpi/acoutput.h
index b1571dd96310..5e0346142f98 100644
--- a/include/acpi/acoutput.h
+++ b/include/acpi/acoutput.h
@@ -193,6 +193,7 @@
  */
 #ifndef ACPI_NO_ERROR_MESSAGES
 #define AE_INFO                         _acpi_module_name, __LINE__
+#define ACPI_ONCE(_fn, _plist)                  { static char _done; if (!_done) { _done = 1; _fn _plist; } }
 
 /*
  * Error reporting. Callers module and line number are inserted by AE_INFO,
@@ -201,8 +202,10 @@
  */
 #define ACPI_INFO(plist)                acpi_info plist
 #define ACPI_WARNING(plist)             acpi_warning plist
+#define ACPI_WARNING_ONCE(plist)        ACPI_ONCE(acpi_warning, plist)
 #define ACPI_EXCEPTION(plist)           acpi_exception plist
 #define ACPI_ERROR(plist)               acpi_error plist
+#define ACPI_ERROR_ONCE(plist)          ACPI_ONCE(acpi_error, plist)
 #define ACPI_BIOS_WARNING(plist)        acpi_bios_warning plist
 #define ACPI_BIOS_EXCEPTION(plist)      acpi_bios_exception plist
 #define ACPI_BIOS_ERROR(plist)          acpi_bios_error plist
@@ -214,8 +217,10 @@
 
 #define ACPI_INFO(plist)
 #define ACPI_WARNING(plist)
+#define ACPI_WARNING_ONCE(plist)
 #define ACPI_EXCEPTION(plist)
 #define ACPI_ERROR(plist)
+#define ACPI_ERROR_ONCE(plist)
 #define ACPI_BIOS_WARNING(plist)
 #define ACPI_BIOS_EXCEPTION(plist)
 #define ACPI_BIOS_ERROR(plist)
-- 
2.43.0