1 files changed, 43 insertions, 10 deletions

diff --git a/drivers/acpi/acpica/hwgpe.c b/drivers/acpi/acpica/hwgpe.c
index 48ac7b7b59cd..494027f5c067 100644
--- a/drivers/acpi/acpica/hwgpe.c
+++ b/drivers/acpi/acpica/hwgpe.c
@@ -115,12 +115,12 @@ acpi_hw_low_set_gpe(struct acpi_gpe_event_info *gpe_event_info, u32 action)
         /* Set or clear just the bit that corresponds to this GPE */
 
         register_bit = acpi_hw_get_gpe_register_bit(gpe_event_info);
-        switch (action) {
+        switch (action & ~ACPI_GPE_SAVE_MASK) {
         case ACPI_GPE_CONDITIONAL_ENABLE:
 
-                /* Only enable if the enable_for_run bit is set */
+                /* Only enable if the corresponding enable_mask bit is set */
 
-                if (!(register_bit & gpe_register_info->enable_for_run)) {
+                if (!(register_bit & gpe_register_info->enable_mask)) {
                         return (AE_BAD_PARAMETER);
                 }
 
@@ -145,6 +145,9 @@ acpi_hw_low_set_gpe(struct acpi_gpe_event_info *gpe_event_info, u32 action)
         /* Write the updated enable mask */
 
         status = acpi_hw_write(enable_mask, &gpe_register_info->enable_address);
+        if (ACPI_SUCCESS(status) && (action & ACPI_GPE_SAVE_MASK)) {
+                gpe_register_info->enable_mask = enable_mask;
+        }
         return (status);
 }
 
@@ -262,6 +265,32 @@ acpi_hw_get_gpe_status(struct acpi_gpe_event_info * gpe_event_info,
 
 /******************************************************************************
  *
+ * FUNCTION:    acpi_hw_gpe_enable_write
+ *
+ * PARAMETERS:  enable_mask         - Bit mask to write to the GPE register
+ *              gpe_register_info   - Gpe Register info
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Write the enable mask byte to the given GPE register.
+ *
+ ******************************************************************************/
+
+static acpi_status
+acpi_hw_gpe_enable_write(u8 enable_mask,
+                         struct acpi_gpe_register_info *gpe_register_info)
+{
+        acpi_status status;
+
+        status = acpi_hw_write(enable_mask, &gpe_register_info->enable_address);
+        if (ACPI_SUCCESS(status)) {
+                gpe_register_info->enable_mask = enable_mask;
+        }
+        return (status);
+}
+
+/******************************************************************************
+ *
  * FUNCTION:    acpi_hw_disable_gpe_block
  *
  * PARAMETERS:  gpe_xrupt_info      - GPE Interrupt info
@@ -287,8 +316,8 @@ acpi_hw_disable_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
                 /* Disable all GPEs in this register */
 
                 status =
-                    acpi_hw_write(0x00,
-                                  &gpe_block->register_info[i].enable_address);
+                    acpi_hw_gpe_enable_write(0x00,
+                                             &gpe_block->register_info[i]);
                 if (ACPI_FAILURE(status)) {
                         return (status);
                 }
@@ -355,21 +384,23 @@ acpi_hw_enable_runtime_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
 {
         u32 i;
         acpi_status status;
+        struct acpi_gpe_register_info *gpe_register_info;
 
         /* NOTE: assumes that all GPEs are currently disabled */
 
         /* Examine each GPE Register within the block */
 
         for (i = 0; i < gpe_block->register_count; i++) {
-                if (!gpe_block->register_info[i].enable_for_run) {
+                gpe_register_info = &gpe_block->register_info[i];
+                if (!gpe_register_info->enable_for_run) {
                         continue;
                 }
 
                 /* Enable all "runtime" GPEs in this register */
 
                 status =
-                    acpi_hw_write(gpe_block->register_info[i].enable_for_run,
-                                  &gpe_block->register_info[i].enable_address);
+                    acpi_hw_gpe_enable_write(gpe_register_info->enable_for_run,
+                                             gpe_register_info);
                 if (ACPI_FAILURE(status)) {
                         return (status);
                 }
@@ -399,10 +430,12 @@ acpi_hw_enable_wakeup_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
 {
         u32 i;
         acpi_status status;
+        struct acpi_gpe_register_info *gpe_register_info;
 
         /* Examine each GPE Register within the block */
 
         for (i = 0; i < gpe_block->register_count; i++) {
+                gpe_register_info = &gpe_block->register_info[i];
 
                 /*
                  * Enable all "wake" GPEs in this register and disable the
@@ -410,8 +443,8 @@ acpi_hw_enable_wakeup_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info,
                  */
 
                 status =
-                    acpi_hw_write(gpe_block->register_info[i].enable_for_wake,
-                                  &gpe_block->register_info[i].enable_address);
+                    acpi_hw_gpe_enable_write(gpe_register_info->enable_for_wake,
+                                             gpe_register_info);
                 if (ACPI_FAILURE(status)) {
                         return (status);
                 }