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path: root/drivers/acpi/tables/tbxface.c
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Diffstat (limited to 'drivers/acpi/tables/tbxface.c')
-rw-r--r--drivers/acpi/tables/tbxface.c32
1 files changed, 19 insertions, 13 deletions
diff --git a/drivers/acpi/tables/tbxface.c b/drivers/acpi/tables/tbxface.c
index 4e91f2984815..7767987be15a 100644
--- a/drivers/acpi/tables/tbxface.c
+++ b/drivers/acpi/tables/tbxface.c
@@ -134,8 +134,8 @@ ACPI_EXPORT_SYMBOL(acpi_load_tables)
* RETURN: Status
*
* DESCRIPTION: This function is called to load a table from the caller's
- * buffer. The buffer must contain an entire ACPI Table including
- * a valid header. The header fields will be verified, and if it
+ * buffer. The buffer must contain an entire ACPI Table including
+ * a valid header. The header fields will be verified, and if it
* is determined that the table is invalid, the call will fail.
*
******************************************************************************/
@@ -245,15 +245,18 @@ acpi_status acpi_unload_table(acpi_table_type table_type)
/* Find all tables of the requested type */
table_desc = acpi_gbl_table_lists[table_type].next;
+ if (!table_desc) {
+ return_ACPI_STATUS(AE_NOT_EXIST);
+ }
+
while (table_desc) {
/*
- * Delete all namespace entries owned by this table. Note that these
- * entries can appear anywhere in the namespace by virtue of the AML
- * "Scope" operator. Thus, we need to track ownership by an ID, not
+ * Delete all namespace objects owned by this table. Note that these
+ * objects can appear anywhere in the namespace by virtue of the AML
+ * "Scope" operator. Thus, we need to track ownership by an ID, not
* simply a position within the hierarchy
*/
acpi_ns_delete_namespace_by_owner(table_desc->owner_id);
- acpi_ut_release_owner_id(&table_desc->owner_id);
table_desc = table_desc->next;
}
@@ -275,12 +278,12 @@ ACPI_EXPORT_SYMBOL(acpi_unload_table)
* see acpi_gbl_acpi_table_flag
* out_table_header - pointer to the struct acpi_table_header if successful
*
- * DESCRIPTION: This function is called to get an ACPI table header. The caller
+ * DESCRIPTION: This function is called to get an ACPI table header. The caller
* supplies an pointer to a data area sufficient to contain an ACPI
* struct acpi_table_header structure.
*
* The header contains a length field that can be used to determine
- * the size of the buffer needed to contain the entire table. This
+ * the size of the buffer needed to contain the entire table. This
* function is not valid for the RSD PTR table since it does not
* have a standard header and is fixed length.
*
@@ -322,7 +325,8 @@ acpi_get_table_header(acpi_table_type table_type,
/* Copy the header to the caller's buffer */
- ACPI_MEMCPY((void *)out_table_header, (void *)tbl_ptr,
+ ACPI_MEMCPY(ACPI_CAST_PTR(void, out_table_header),
+ ACPI_CAST_PTR(void, tbl_ptr),
sizeof(struct acpi_table_header));
return_ACPI_STATUS(status);
@@ -344,10 +348,10 @@ ACPI_EXPORT_SYMBOL(acpi_get_table_header)
*
* RETURN: Status
*
- * DESCRIPTION: This function is called to get an ACPI table. The caller
+ * DESCRIPTION: This function is called to get an ACPI table. The caller
* supplies an out_buffer large enough to contain the entire ACPI
- * table. The caller should call the acpi_get_table_header function
- * first to determine the buffer size needed. Upon completion
+ * table. The caller should call the acpi_get_table_header function
+ * first to determine the buffer size needed. Upon completion
* the out_buffer->Length field will indicate the number of bytes
* copied into the out_buffer->buf_ptr buffer. This table will be
* a complete table including the header.
@@ -417,7 +421,9 @@ acpi_get_table(acpi_table_type table_type,
/* Copy the table to the buffer */
- ACPI_MEMCPY((void *)ret_buffer->pointer, (void *)tbl_ptr, table_length);
+ ACPI_MEMCPY(ACPI_CAST_PTR(void, ret_buffer->pointer),
+ ACPI_CAST_PTR(void, tbl_ptr), table_length);
+
return_ACPI_STATUS(AE_OK);
}