diff options
Diffstat (limited to 'drivers/acpi/acpica/tbutils.c')
| -rw-r--r-- | drivers/acpi/acpica/tbutils.c | 82 |
1 files changed, 75 insertions, 7 deletions
diff --git a/drivers/acpi/acpica/tbutils.c b/drivers/acpi/acpica/tbutils.c index ef7d2c2d8f0..1f15497f00d 100644 --- a/drivers/acpi/acpica/tbutils.c +++ b/drivers/acpi/acpica/tbutils.c @@ -49,6 +49,12 @@ ACPI_MODULE_NAME("tbutils") /* Local prototypes */ +static void acpi_tb_fix_string(char *string, acpi_size length); + +static void +acpi_tb_cleanup_table_header(struct acpi_table_header *out_header, + struct acpi_table_header *header); + static acpi_physical_address acpi_tb_get_root_table_entry(u8 *table_entry, u32 table_entry_size); @@ -161,6 +167,59 @@ u8 acpi_tb_tables_loaded(void) /******************************************************************************* * + * FUNCTION: acpi_tb_fix_string + * + * PARAMETERS: String - String to be repaired + * Length - Maximum length + * + * RETURN: None + * + * DESCRIPTION: Replace every non-printable or non-ascii byte in the string + * with a question mark '?'. + * + ******************************************************************************/ + +static void acpi_tb_fix_string(char *string, acpi_size length) +{ + + while (length && *string) { + if (!ACPI_IS_PRINT(*string)) { + *string = '?'; + } + string++; + length--; + } +} + +/******************************************************************************* + * + * FUNCTION: acpi_tb_cleanup_table_header + * + * PARAMETERS: out_header - Where the cleaned header is returned + * Header - Input ACPI table header + * + * RETURN: Returns the cleaned header in out_header + * + * DESCRIPTION: Copy the table header and ensure that all "string" fields in + * the header consist of printable characters. + * + ******************************************************************************/ + +static void +acpi_tb_cleanup_table_header(struct acpi_table_header *out_header, + struct acpi_table_header *header) +{ + + ACPI_MEMCPY(out_header, header, sizeof(struct acpi_table_header)); + + acpi_tb_fix_string(out_header->signature, ACPI_NAME_SIZE); + acpi_tb_fix_string(out_header->oem_id, ACPI_OEM_ID_SIZE); + acpi_tb_fix_string(out_header->oem_table_id, ACPI_OEM_TABLE_ID_SIZE); + acpi_tb_fix_string(out_header->asl_compiler_id, ACPI_NAME_SIZE); +} + +/******************************************************************************* + * * FUNCTION: acpi_tb_print_table_header * * PARAMETERS: Address - Table physical address @@ -176,6 +235,7 @@ void acpi_tb_print_table_header(acpi_physical_address address, struct acpi_table_header *header) { + struct acpi_table_header local_header; /* * The reason that the Address is cast to a void pointer is so that we @@ -192,6 +252,11 @@ acpi_tb_print_table_header(acpi_physical_address address, /* RSDP has no common fields */ + ACPI_MEMCPY(local_header.oem_id, + ACPI_CAST_PTR(struct acpi_table_rsdp, + header)->oem_id, ACPI_OEM_ID_SIZE); + acpi_tb_fix_string(local_header.oem_id, ACPI_OEM_ID_SIZE); + ACPI_INFO((AE_INFO, "RSDP %p %05X (v%.2d %6.6s)", ACPI_CAST_PTR (void, address), (ACPI_CAST_PTR(struct acpi_table_rsdp, header)-> @@ -200,18 +265,21 @@ acpi_tb_print_table_header(acpi_physical_address address, header)->length : 20, ACPI_CAST_PTR(struct acpi_table_rsdp, header)->revision, - ACPI_CAST_PTR(struct acpi_table_rsdp, - header)->oem_id)); + local_header.oem_id)); } else { /* Standard ACPI table with full common header */ + acpi_tb_cleanup_table_header(&local_header, header); + ACPI_INFO((AE_INFO, "%4.4s %p %05X (v%.2d %6.6s %8.8s %08X %4.4s %08X)", - header->signature, ACPI_CAST_PTR (void, address), - header->length, header->revision, header->oem_id, - header->oem_table_id, header->oem_revision, - header->asl_compiler_id, - header->asl_compiler_revision)); + local_header.signature, ACPI_CAST_PTR(void, address), + local_header.length, local_header.revision, + local_header.oem_id, local_header.oem_table_id, + local_header.oem_revision, + local_header.asl_compiler_id, + local_header.asl_compiler_revision)); + } } |