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ACPI: acpi_os_get_thread_id() returns current

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Linux mutexes and the debug code that that reference
acpi_os_get_thread_id() are happy with 0.
But the AML mutexes in exmutex.c expect a unique non-zero
number for each thread - as they track this thread_id
to permit the mutex re-entrancy defined by the ACPI spec.

http://bugzilla.kernel.org/show_bug.cgi?id=6687

Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Len Brown 2006-07-07 20:11:07 -04:00
parent 120bda20c6
commit ab8aa06a5c
5 changed files with 12 additions and 11 deletions
Download patch file Download diff file Expand all files Collapse all files

8
drivers/acpi/utilities/utmutex.c
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@ -244,14 +244,14 @@ acpi_status acpi_ut_acquire_mutex(acpi_mutex_handle mutex_id)
ACPI_DEBUG_PRINT((ACPI_DB_MUTEX,
"Thread %X attempting to acquire Mutex [%s]\n",
this_thread_id, acpi_ut_get_mutex_name(mutex_id)));
(u32) this_thread_id, acpi_ut_get_mutex_name(mutex_id)));
status = acpi_os_acquire_mutex(acpi_gbl_mutex_info[mutex_id].mutex,
ACPI_WAIT_FOREVER);
if (ACPI_SUCCESS(status)) {
ACPI_DEBUG_PRINT((ACPI_DB_MUTEX,
"Thread %X acquired Mutex [%s]\n",
this_thread_id,
(u32) this_thread_id,
acpi_ut_get_mutex_name(mutex_id)));
acpi_gbl_mutex_info[mutex_id].use_count++;
@ -259,7 +259,7 @@ acpi_status acpi_ut_acquire_mutex(acpi_mutex_handle mutex_id)
} else {
ACPI_EXCEPTION((AE_INFO, status,
"Thread %X could not acquire Mutex [%X]",
this_thread_id, mutex_id));
(u32) this_thread_id, mutex_id));
}
return (status);
@ -285,7 +285,7 @@ acpi_status acpi_ut_release_mutex(acpi_mutex_handle mutex_id)
this_thread_id = acpi_os_get_thread_id();
ACPI_DEBUG_PRINT((ACPI_DB_MUTEX,
"Thread %X releasing Mutex [%s]\n", this_thread_id,
"Thread %X releasing Mutex [%s]\n", (u32) this_thread_id,
acpi_ut_get_mutex_name(mutex_id)));
if (mutex_id > ACPI_MAX_MUTEX) {