diff options
Diffstat (limited to 'drivers/acpi/tables/tbinstal.c')
| -rw-r--r-- | drivers/acpi/tables/tbinstal.c | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/drivers/acpi/tables/tbinstal.c b/drivers/acpi/tables/tbinstal.c index 2ad72f204551..698799901f55 100644 --- a/drivers/acpi/tables/tbinstal.c +++ b/drivers/acpi/tables/tbinstal.c @@ -124,9 +124,7 @@ acpi_tb_match_signature ( * * RETURN: Status * - * DESCRIPTION: Load and validate all tables other than the RSDT. The RSDT must - * already be loaded and validated. - * Install the table into the global data structs. + * DESCRIPTION: Install the table into the global data structures. * ******************************************************************************/ @@ -136,6 +134,7 @@ acpi_tb_install_table ( { acpi_status status; + ACPI_FUNCTION_TRACE ("tb_install_table"); @@ -143,22 +142,33 @@ acpi_tb_install_table ( status = acpi_ut_acquire_mutex (ACPI_MTX_TABLES); if (ACPI_FAILURE (status)) { - ACPI_REPORT_ERROR (("Could not acquire table mutex for [%4.4s], %s\n", - table_info->pointer->signature, acpi_format_exception (status))); + ACPI_REPORT_ERROR (("Could not acquire table mutex, %s\n", + acpi_format_exception (status))); return_ACPI_STATUS (status); } + /* + * Ignore a table that is already installed. For example, some BIOS + * ASL code will repeatedly attempt to load the same SSDT. + */ + status = acpi_tb_is_table_installed (table_info); + if (ACPI_FAILURE (status)) { + goto unlock_and_exit; + } + /* Install the table into the global data structure */ status = acpi_tb_init_table_descriptor (table_info->type, table_info); if (ACPI_FAILURE (status)) { - ACPI_REPORT_ERROR (("Could not install ACPI table [%4.4s], %s\n", + ACPI_REPORT_ERROR (("Could not install table [%4.4s], %s\n", table_info->pointer->signature, acpi_format_exception (status))); } ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "%s located at %p\n", acpi_gbl_table_data[table_info->type].name, table_info->pointer)); + +unlock_and_exit: (void) acpi_ut_release_mutex (ACPI_MTX_TABLES); return_ACPI_STATUS (status); } |