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| author | Octavian Purdila <octavian.purdila@intel.com> | 2014-12-16 17:12:30 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2015-01-22 01:16:44 +0100 |
| commit | 97d746578b1fc4ce461e6279220cab3605f02469 (patch) | |
| tree | dbd4b64eceb52ef9e5ac45b104fb44c843d4a567 /drivers | |
| parent | Linux 3.19-rc5 (diff) | |
| download | linux-97d746578b1fc4ce461e6279220cab3605f02469.tar.xz linux-97d746578b1fc4ce461e6279220cab3605f02469.zip | |
ACPICA: take ACPI_MTX_INTERPRETER in acpi_unload_table_id()
acpi_tb_delete_namespace_by_owner() expects ACPI_MTX_INTERPRETER to be
taken. This fixes the following issue:
ACPI Error: Mutex [0x0] is not acquired, cannot release (20141107/utmutex-322)
Call Trace:
[<ffffffff81b0bd28>] dump_stack+0x4f/0x7b
[<ffffffff81546bfc>] acpi_ut_release_mutex+0x47/0x67
[<ffffffff81542cf1>] acpi_tb_delete_namespace_by_owner+0x57/0x8d
[<ffffffff81543ef1>] acpi_unload_table_id+0x3a/0x5e
Signed-off-by: Octavian Purdila <octavian.purdila@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/acpi/acpica/tbxface.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/tbxface.c b/drivers/acpi/acpica/tbxface.c index 6482b0ded652..9520ae19bb37 100644 --- a/drivers/acpi/acpica/tbxface.c +++ b/drivers/acpi/acpica/tbxface.c @@ -281,6 +281,11 @@ acpi_status acpi_unload_table_id(acpi_owner_id id) ACPI_FUNCTION_TRACE(acpi_unload_table_id); + status = acpi_ut_acquire_mutex(ACPI_MTX_INTERPRETER); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } + /* Find table in the global table list */ for (i = 0; i < acpi_gbl_root_table_list.current_table_count; ++i) { if (id != acpi_gbl_root_table_list.tables[i].owner_id) { @@ -297,6 +302,8 @@ acpi_status acpi_unload_table_id(acpi_owner_id id) acpi_tb_set_table_loaded_flag(i, FALSE); break; } + + (void)acpi_ut_release_mutex(ACPI_MTX_INTERPRETER); return_ACPI_STATUS(status); } |