diff options
| -rw-r--r-- | drivers/acpi/acpica/tbxface.c | 23 |
1 files changed, 18 insertions, 5 deletions
diff --git a/drivers/acpi/acpica/tbxface.c b/drivers/acpi/acpica/tbxface.c index 5217a6159a31..684614d0d327 100644 --- a/drivers/acpi/acpica/tbxface.c +++ b/drivers/acpi/acpica/tbxface.c @@ -172,6 +172,7 @@ acpi_status acpi_reallocate_root_table(void) { struct acpi_table_desc *tables; acpi_size new_size; + acpi_size current_size; ACPI_FUNCTION_TRACE(acpi_reallocate_root_table); @@ -183,9 +184,15 @@ acpi_status acpi_reallocate_root_table(void) return_ACPI_STATUS(AE_SUPPORT); } - new_size = ((acpi_size) acpi_gbl_root_table_list.count + - ACPI_ROOT_TABLE_SIZE_INCREMENT) * - sizeof(struct acpi_table_desc); + /* + * Get the current size of the root table and add the default + * increment to create the new table size. + */ + current_size = (acpi_size) + acpi_gbl_root_table_list.count * sizeof(struct acpi_table_desc); + + new_size = current_size + + (ACPI_ROOT_TABLE_SIZE_INCREMENT * sizeof(struct acpi_table_desc)); /* Create new array and copy the old array */ @@ -194,10 +201,16 @@ acpi_status acpi_reallocate_root_table(void) return_ACPI_STATUS(AE_NO_MEMORY); } - ACPI_MEMCPY(tables, acpi_gbl_root_table_list.tables, new_size); + ACPI_MEMCPY(tables, acpi_gbl_root_table_list.tables, current_size); - acpi_gbl_root_table_list.size = acpi_gbl_root_table_list.count; + /* + * Update the root table descriptor. The new size will be the current + * number of tables plus the increment, independent of the reserved + * size of the original table list. + */ acpi_gbl_root_table_list.tables = tables; + acpi_gbl_root_table_list.size = + acpi_gbl_root_table_list.count + ACPI_ROOT_TABLE_SIZE_INCREMENT; acpi_gbl_root_table_list.flags = ACPI_ROOT_ORIGIN_ALLOCATED | ACPI_ROOT_ALLOW_RESIZE; |