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| author | Bob Moore <robert.moore@intel.com> | 2015-08-25 10:28:26 +0800 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2015-08-25 23:11:30 +0200 |
| commit | 4712f71b609d1805b958c0c355b16a995b11ab6e (patch) | |
| tree | fdc5478b85a78859f593691124051cdf3e338a3b /drivers/acpi/acpica/tbxfload.c | |
| parent | 40913fe6ea3b733564f0b580cf6c51f5d8fa8158 (diff) | |
| download | linux-4712f71b609d1805b958c0c355b16a995b11ab6e.tar.bz2 | |
ACPICA: Correctly cleanup after a ACPI table load failure
ACPICA commit ed7769e832de6c7ba90615480d916c85fd100422
If a table load fails, delete all namespace objects created by the
table, otherwise these objects will be uninitialized, causing
problems later. This appears to be a very rare problem.
Also handle the unitialized node problem to prevent possible
faults. ACPICA BZ 1185.
Link: https://github.com/acpica/acpica/commit/ed7769e8
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi/acpica/tbxfload.c')
| -rw-r--r-- | drivers/acpi/acpica/tbxfload.c | 29 |
1 files changed, 26 insertions, 3 deletions
diff --git a/drivers/acpi/acpica/tbxfload.c b/drivers/acpi/acpica/tbxfload.c index 9682d40ca6ff..7862cf04a164 100644 --- a/drivers/acpi/acpica/tbxfload.c +++ b/drivers/acpi/acpica/tbxfload.c @@ -102,6 +102,8 @@ static acpi_status acpi_tb_load_namespace(void) acpi_status status; u32 i; struct acpi_table_header *new_dsdt; + u32 tables_loaded = 0; + u32 tables_failed = 0; ACPI_FUNCTION_TRACE(tb_load_namespace); @@ -159,7 +161,10 @@ static acpi_status acpi_tb_load_namespace(void) status = acpi_ns_load_table(ACPI_TABLE_INDEX_DSDT, acpi_gbl_root_node); if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); + ACPI_EXCEPTION((AE_INFO, status, "[DSDT] table load failed")); + tables_failed++; + } else { + tables_loaded++; } /* Load any SSDT or PSDT tables. Note: Loop leaves tables locked */ @@ -187,11 +192,29 @@ static acpi_status acpi_tb_load_namespace(void) /* Ignore errors while loading tables, get as many as possible */ (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); - (void)acpi_ns_load_table(i, acpi_gbl_root_node); + status = acpi_ns_load_table(i, acpi_gbl_root_node); + if (ACPI_FAILURE(status)) { + ACPI_EXCEPTION((AE_INFO, status, + "[%4.4s] table load failed", + &acpi_gbl_root_table_list.tables[i]. + signature.ascii[0])); + tables_failed++; + } else { + tables_loaded++; + } + (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES); } - ACPI_INFO((AE_INFO, "All ACPI Tables successfully acquired")); + if (!tables_failed) { + ACPI_INFO((AE_INFO, + "All (%u) ACPI AML tables successfully loaded", + tables_loaded)); + } else { + ACPI_ERROR((AE_INFO, + "%u ACPI AML tables loaded, %u failed", + tables_loaded, tables_failed)); + } unlock_and_exit: (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); |