ACPICA: Update for new gcc-4 warning options

Added several new options for the gcc-4 generation, and updated
the source accordingly. This includes some code restructuring to
eliminate unreachable code, elimination of some gotos, elimination
of unused return values, and some additional casting.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

diff --git a/drivers/acpi/acpica/exconfig.c b/drivers/acpi/acpica/exconfig.c
index 46adfa5..2ea8dac 100644 (file)
--- a/drivers/acpi/acpica/exconfig.c
+++ b/drivers/acpi/acpica/exconfig.c
@@ -490,7 +490,11 @@ acpi_ex_load_op(union acpi_operand_object *obj_desc,
 
        status = acpi_tb_add_table(&table_desc, &table_index);
        if (ACPI_FAILURE(status)) {
-               goto cleanup;
+
+               /* Delete allocated table buffer */
+
+               acpi_tb_delete_table(&table_desc);
+               return_ACPI_STATUS(status);
        }
 
        /*
@@ -533,13 +537,6 @@ acpi_ex_load_op(union acpi_operand_object *obj_desc,
                                             acpi_gbl_table_handler_context);
        }
 
-      cleanup:
-       if (ACPI_FAILURE(status)) {
-
-               /* Delete allocated table buffer */
-
-               acpi_tb_delete_table(&table_desc);
-       }
        return_ACPI_STATUS(status);
 }
 

diff --git a/drivers/acpi/acpica/hwgpe.c b/drivers/acpi/acpica/hwgpe.c
index c28c41b..55c4507 100644 (file)
--- a/drivers/acpi/acpica/hwgpe.c
+++ b/drivers/acpi/acpica/hwgpe.c
@@ -224,7 +224,7 @@ acpi_hw_get_gpe_status(struct acpi_gpe_event_info * gpe_event_info,
 
        status = acpi_hw_read(&in_byte, &gpe_register_info->status_address);
        if (ACPI_FAILURE(status)) {
-               goto unlock_and_exit;
+               return (status);
        }
 
        if (register_bit & in_byte) {
@@ -234,9 +234,7 @@ acpi_hw_get_gpe_status(struct acpi_gpe_event_info * gpe_event_info,
        /* Set return value */
 
        (*event_status) = local_event_status;
-
-      unlock_and_exit:
-       return (status);
+       return (AE_OK);
 }
 
 /******************************************************************************

diff --git a/drivers/acpi/acpica/nspredef.c b/drivers/acpi/acpica/nspredef.c
index d34fa59..309586f 100644 (file)
--- a/drivers/acpi/acpica/nspredef.c
+++ b/drivers/acpi/acpica/nspredef.c
@@ -1000,27 +1000,25 @@ acpi_ns_check_object_type(struct acpi_predefined_data *data,
 
        /* Is the object one of the expected types? */
 
-       if (!(return_btype & expected_btypes)) {
+       if (return_btype & expected_btypes) {
 
-               /* Type mismatch -- attempt repair of the returned object */
+               /* For reference objects, check that the reference type is correct */
 
-               status = acpi_ns_repair_object(data, expected_btypes,
-                                              package_index,
-                                              return_object_ptr);
-               if (ACPI_SUCCESS(status)) {
-                       return (AE_OK); /* Repair was successful */
+               if (return_object->common.type == ACPI_TYPE_LOCAL_REFERENCE) {
+                       status = acpi_ns_check_reference(data, return_object);
                }
-               goto type_error_exit;
+
+               return (status);
        }
 
-       /* For reference objects, check that the reference type is correct */
+       /* Type mismatch -- attempt repair of the returned object */
 
-       if (return_object->common.type == ACPI_TYPE_LOCAL_REFERENCE) {
-               status = acpi_ns_check_reference(data, return_object);
+       status = acpi_ns_repair_object(data, expected_btypes,
+                                      package_index, return_object_ptr);
+       if (ACPI_SUCCESS(status)) {
+               return (AE_OK); /* Repair was successful */
        }
 
-       return (status);
-
       type_error_exit:
 
        /* Create a string with all expected types for this predefined object */

diff --git a/drivers/acpi/acpica/nsrepair2.c b/drivers/acpi/acpica/nsrepair2.c
index f13691c..6d69264 100644 (file)
--- a/drivers/acpi/acpica/nsrepair2.c
+++ b/drivers/acpi/acpica/nsrepair2.c
@@ -93,7 +93,7 @@ acpi_ns_check_sorted_list(struct acpi_predefined_data *data,
                          u32 sort_index,
                          u8 sort_direction, char *sort_key_name);
 
-static acpi_status
+static void
 acpi_ns_sort_list(union acpi_operand_object **elements,
                  u32 count, u32 index, u8 sort_direction);
 
@@ -443,7 +443,6 @@ acpi_ns_check_sorted_list(struct acpi_predefined_data *data,
        union acpi_operand_object *obj_desc;
        u32 i;
        u32 previous_value;
-       acpi_status status;
 
        ACPI_FUNCTION_NAME(ns_check_sorted_list);
 
@@ -494,19 +493,15 @@ acpi_ns_check_sorted_list(struct acpi_predefined_data *data,
 
                /*
                 * The list must be sorted in the specified order. If we detect a
-                * discrepancy, issue a warning and sort the entire list
+                * discrepancy, sort the entire list.
                 */
                if (((sort_direction == ACPI_SORT_ASCENDING) &&
                     (obj_desc->integer.value < previous_value)) ||
                    ((sort_direction == ACPI_SORT_DESCENDING) &&
                     (obj_desc->integer.value > previous_value))) {
-                       status =
-                           acpi_ns_sort_list(return_object->package.elements,
-                                             outer_element_count, sort_index,
-                                             sort_direction);
-                       if (ACPI_FAILURE(status)) {
-                               return (status);
-                       }
+                       acpi_ns_sort_list(return_object->package.elements,
+                                         outer_element_count, sort_index,
+                                         sort_direction);
 
                        data->flags |= ACPI_OBJECT_REPAIRED;
 
@@ -615,15 +610,16 @@ acpi_ns_remove_null_elements(struct acpi_predefined_data *data,
  *              Index               - Sort by which package element
  *              sort_direction      - Ascending or Descending sort
  *
- * RETURN:      Status
+ * RETURN:      None
  *
  * DESCRIPTION: Sort the objects that are in a package element list.
  *
- * NOTE: Assumes that all NULL elements have been removed from the package.
+ * NOTE: Assumes that all NULL elements have been removed from the package,
+ *       and that all elements have been verified to be of type Integer.
  *
  *****************************************************************************/
 
-static acpi_status
+static void
 acpi_ns_sort_list(union acpi_operand_object **elements,
                  u32 count, u32 index, u8 sort_direction)
 {
@@ -652,6 +648,4 @@ acpi_ns_sort_list(union acpi_operand_object **elements,
                        }
                }
        }
-
-       return (AE_OK);
 }

diff --git a/drivers/acpi/acpica/utmutex.c b/drivers/acpi/acpica/utmutex.c
index 80bb651..1f58a88 100644 (file)
--- a/drivers/acpi/acpica/utmutex.c
+++ b/drivers/acpi/acpica/utmutex.c
@@ -50,7 +50,7 @@ ACPI_MODULE_NAME("utmutex")
 /* Local prototypes */
 static acpi_status acpi_ut_create_mutex(acpi_mutex_handle mutex_id);
 
-static acpi_status acpi_ut_delete_mutex(acpi_mutex_handle mutex_id);
+static void acpi_ut_delete_mutex(acpi_mutex_handle mutex_id);
 
 /*******************************************************************************
  *
@@ -114,7 +114,7 @@ void acpi_ut_mutex_terminate(void)
        /* Delete each predefined mutex object */
 
        for (i = 0; i < ACPI_NUM_MUTEX; i++) {
-               (void)acpi_ut_delete_mutex(i);
+               acpi_ut_delete_mutex(i);
        }
 
        /* Delete the spinlocks */
@@ -146,10 +146,6 @@ static acpi_status acpi_ut_create_mutex(acpi_mutex_handle mutex_id)
 
        ACPI_FUNCTION_TRACE_U32(ut_create_mutex, mutex_id);
 
-       if (mutex_id > ACPI_MAX_MUTEX) {
-               return_ACPI_STATUS(AE_BAD_PARAMETER);
-       }
-
        if (!acpi_gbl_mutex_info[mutex_id].mutex) {
                status =
                    acpi_os_create_mutex(&acpi_gbl_mutex_info[mutex_id].mutex);
@@ -173,21 +169,15 @@ static acpi_status acpi_ut_create_mutex(acpi_mutex_handle mutex_id)
  *
  ******************************************************************************/
 
-static acpi_status acpi_ut_delete_mutex(acpi_mutex_handle mutex_id)
+static void acpi_ut_delete_mutex(acpi_mutex_handle mutex_id)
 {
 
        ACPI_FUNCTION_TRACE_U32(ut_delete_mutex, mutex_id);
 
-       if (mutex_id > ACPI_MAX_MUTEX) {
-               return_ACPI_STATUS(AE_BAD_PARAMETER);
-       }
-
        acpi_os_delete_mutex(acpi_gbl_mutex_info[mutex_id].mutex);
 
        acpi_gbl_mutex_info[mutex_id].mutex = NULL;
        acpi_gbl_mutex_info[mutex_id].thread_id = ACPI_MUTEX_NOT_ACQUIRED;
-
-       return_ACPI_STATUS(AE_OK);
 }
 
 /*******************************************************************************

diff --git a/include/acpi/platform/acenv.h b/include/acpi/platform/acenv.h
index e62f10d..fa7689a 100644 (file)
--- a/include/acpi/platform/acenv.h
+++ b/include/acpi/platform/acenv.h
@@ -311,8 +311,8 @@ typedef char *va_list;
 #define ACPI_MEMCMP(s1,s2,n)    acpi_ut_memcmp((const char *)(s1), (const char *)(s2), (acpi_size)(n))
 #define ACPI_MEMCPY(d,s,n)      (void) acpi_ut_memcpy ((d), (s), (acpi_size)(n))
 #define ACPI_MEMSET(d,v,n)      (void) acpi_ut_memset ((d), (v), (acpi_size)(n))
-#define ACPI_TOUPPER            acpi_ut_to_upper
-#define ACPI_TOLOWER            acpi_ut_to_lower
+#define ACPI_TOUPPER(c)         acpi_ut_to_upper ((int) (c))
+#define ACPI_TOLOWER(c)         acpi_ut_to_lower ((int) (c))
 
 #endif                         /* ACPI_USE_SYSTEM_CLIBRARY */