ACPICA: Tables: Add new table events indicating table installation/uninstallation

ACPICA commit ed6a5fbc694f3a27d93014391aa9a6f6fe490461

This patch adds 2 new table events to indicate table
installation/uninstallation.

Currently, as ACPICA never uninstalls tables, this patch thus only adds
table handler invocation for the table installation event. Lv Zheng.

The 2 events are to be used to fix a sysfs table handling issue related to
LoadTable opcode (see Link # [1] below). The actual sysfs fixing code is
not included, the sysfs fixes will be sent as separate patches.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=150841
Link: https://github.com/acpica/acpica/commit/ed6a5fbc
Reported-by: Jason Voelz <[email protected]>
Reported-by: Francisco Leoner <[email protected]>
Signed-off-by: Lv Zheng <[email protected]>
Signed-off-by: Bob Moore <[email protected]>
Signed-off-by: Rafael J. Wysocki <[email protected]>

diff --git a/drivers/acpi/acpica/tbinstal.c b/drivers/acpi/acpica/tbinstal.c
index d4618648ea13b53ef6f78d9b9d94d16ed8fc3321..5fdf251a9f9797a2a00f479880d6449dfa6dd940 100644 (file)
--- a/drivers/acpi/acpica/tbinstal.c
+++ b/drivers/acpi/acpica/tbinstal.c
@@ -301,6 +301,14 @@ acpi_tb_install_standard_table(acpi_physical_address address,
        acpi_tb_install_table_with_override(&new_table_desc, override,
                                            table_index);
 
+       /* Invoke table handler if present */
+
+       if (acpi_gbl_table_handler) {
+               (void)acpi_gbl_table_handler(ACPI_TABLE_EVENT_INSTALL,
+                                            new_table_desc.pointer,
+                                            acpi_gbl_table_handler_context);
+       }
+
 release_and_exit:
 
        /* Release the temporary table descriptor */

diff --git a/include/acpi/actypes.h b/include/acpi/actypes.h
index 892595ffca5745a93edb704958c19238de4586b0..1d798abae710b38ba4af4511e7ae654cfdf3151b 100644 (file)
--- a/include/acpi/actypes.h
+++ b/include/acpi/actypes.h
@@ -1089,7 +1089,9 @@ acpi_status (*acpi_table_handler) (u32 event, void *table, void *context);
 
 #define ACPI_TABLE_EVENT_LOAD           0x0
 #define ACPI_TABLE_EVENT_UNLOAD         0x1
-#define ACPI_NUM_TABLE_EVENTS           2
+#define ACPI_TABLE_EVENT_INSTALL        0x2
+#define ACPI_TABLE_EVENT_UNINSTALL      0x3
+#define ACPI_NUM_TABLE_EVENTS           4
 
 /* Address Spaces (For Operation Regions) */