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authorBob Moore <robert.moore@intel.com>2015-08-25 10:30:00 +0800
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2015-08-25 23:11:32 +0200
commit47cdf8c692d5a64855a7aff83800d5bc5c925d7c (patch)
treedad5bbe4f94fac2c620bd327e8924b59f08f3faf /drivers/acpi/acpica
parente69ab9a99e1d112045dd87902e467daec0d189da (diff)
downloadlinux-linaro-stable-47cdf8c692d5a64855a7aff83800d5bc5c925d7c.tar.gz
ACPICA: Make the max-number-of-loops runtime configurable
ACPICA commit a9d9c2d0c2d077bb3175ec9c252cf0e5da3efd45 Was previously compile-time only. Add support option for acpiexec. Link: https://github.com/acpica/acpica/commit/a9d9c2d0 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi/acpica')
-rw-r--r--drivers/acpi/acpica/acglobal.h4
-rw-r--r--drivers/acpi/acpica/dscontrol.c2
-rw-r--r--drivers/acpi/acpica/utinit.c1
3 files changed, 6 insertions, 1 deletions
diff --git a/drivers/acpi/acpica/acglobal.h b/drivers/acpi/acpica/acglobal.h
index c5971923cba4..03c443b87c76 100644
--- a/drivers/acpi/acpica/acglobal.h
+++ b/drivers/acpi/acpica/acglobal.h
@@ -236,6 +236,10 @@ ACPI_INIT_GLOBAL(u32, acpi_gbl_nesting_level, 0);
ACPI_GLOBAL(struct acpi_thread_state *, acpi_gbl_current_walk_list);
+/* Maximum number of While() loop iterations before forced abort */
+
+ACPI_GLOBAL(u16, acpi_gbl_max_loop_iterations);
+
/* Control method single step flag */
ACPI_GLOBAL(u8, acpi_gbl_cm_single_step);
diff --git a/drivers/acpi/acpica/dscontrol.c b/drivers/acpi/acpica/dscontrol.c
index 39da9da62bbf..435fc16e2f83 100644
--- a/drivers/acpi/acpica/dscontrol.c
+++ b/drivers/acpi/acpica/dscontrol.c
@@ -212,7 +212,7 @@ acpi_ds_exec_end_control_op(struct acpi_walk_state * walk_state,
*/
control_state->control.loop_count++;
if (control_state->control.loop_count >
- ACPI_MAX_LOOP_ITERATIONS) {
+ acpi_gbl_max_loop_iterations) {
status = AE_AML_INFINITE_LOOP;
break;
}
diff --git a/drivers/acpi/acpica/utinit.c b/drivers/acpi/acpica/utinit.c
index 7f897c63aa5b..28ab3a1d5ec1 100644
--- a/drivers/acpi/acpica/utinit.c
+++ b/drivers/acpi/acpica/utinit.c
@@ -207,6 +207,7 @@ acpi_status acpi_ut_init_globals(void)
acpi_gbl_debugger_configuration = DEBUGGER_THREADING;
acpi_gbl_osi_mutex = NULL;
acpi_gbl_reg_methods_executed = FALSE;
+ acpi_gbl_max_loop_iterations = 0xFFFF;
/* Hardware oriented */