[PATCH 5/5] ACPI: Add configuration item to configure ACPICA error logs out

[Lv Zheng <lv.zheng@intel.com>]

Sometimes, we need to disable ACPICA error logs to leave only ACPICA
debug logs enabled for debugging purpose. This is useful when ACPICA error
logs become a flood.

Reference: https://bugzilla.kernel.org/show_bug.cgi?id=114201
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
---
 drivers/acpi/Kconfig            |    7 +++++++
 include/acpi/platform/aclinux.h |    4 ++++
 2 files changed, 11 insertions(+)

diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index 04af18f..939d235 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -324,6 +324,13 @@ config ACPI_TABLE_UPGRADE
 	  initrd, therefore it's safe to say Y.
 	  See Documentation/acpi/initrd_table_override.txt for details
 
+config ACPI_NO_ERROR_MESSAGES
+	bool "Disable error messages"
+	default n
+	help
+	  The ACPI subsystem can produce error messages. Saying Y disables
+	  this output.
+
 config ACPI_DEBUG
 	bool "Debug Statements"
 	default n
diff --git a/include/acpi/platform/aclinux.h b/include/acpi/platform/aclinux.h
index 93b61b1..ed27b52 100644
--- a/include/acpi/platform/aclinux.h
+++ b/include/acpi/platform/aclinux.h
@@ -77,6 +77,10 @@
 #define ACPI_MUTEX_DEBUG
 #endif
 
+#ifdef CONFIG_ACPI_NO_ERROR_MESSAGES
+#define ACPI_NO_ERROR_MESSAGES
+#endif
+
 #include <linux/string.h>
 #include <linux/kernel.h>
 #include <linux/ctype.h>
-- 
1.7.10