Pull acpica into release branch

1 files changed, 5 insertions, 9 deletions

diff --git a/drivers/acpi/events/evgpe.c b/drivers/acpi/events/evgpe.c
index f01d339407f8..c76c0583ca6a 100644
--- a/drivers/acpi/events/evgpe.c
+++ b/drivers/acpi/events/evgpe.c
@@ -382,7 +382,6 @@ u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info * gpe_xrupt_list)
         u32 status_reg;
         u32 enable_reg;
         acpi_cpu_flags flags;
-        acpi_cpu_flags hw_flags;
         acpi_native_uint i;
         acpi_native_uint j;
 
@@ -394,8 +393,11 @@ u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info * gpe_xrupt_list)
                 return (int_status);
         }
 
-        /* We need to hold the GPE lock now, hardware lock in the loop */
-
+        /*
+         * We need to obtain the GPE lock for both the data structs and registers
+         * Note: Not necessary to obtain the hardware lock, since the GPE registers
+         * are owned by the gpe_lock.
+         */
         flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
 
         /* Examine all GPE blocks attached to this interrupt level */
@@ -413,8 +415,6 @@ u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info * gpe_xrupt_list)
 
                         gpe_register_info = &gpe_block->register_info[i];
 
-                        hw_flags = acpi_os_acquire_lock(acpi_gbl_hardware_lock);
-
                         /* Read the Status Register */
 
                         status =
@@ -423,8 +423,6 @@ u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info * gpe_xrupt_list)
                                                    &gpe_register_info->
                                                    status_address);
                         if (ACPI_FAILURE(status)) {
-                                acpi_os_release_lock(acpi_gbl_hardware_lock,
-                                                     hw_flags);
                                 goto unlock_and_exit;
                         }
 
@@ -435,8 +433,6 @@ u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info * gpe_xrupt_list)
                                                    &enable_reg,
                                                    &gpe_register_info->
                                                    enable_address);
-                        acpi_os_release_lock(acpi_gbl_hardware_lock, hw_flags);
-
                         if (ACPI_FAILURE(status)) {
                                 goto unlock_and_exit;
                         }