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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 <[email protected]>
This commit is contained in:
Len Brown 2006-07-07 20:11:07 -04:00
commit ab8aa06a5c
5 changed files with 12 additions and 11 deletions
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2
include/acpi/aclocal.h
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@ -127,7 +127,7 @@ typedef u8 acpi_owner_id;
/* This Thread ID means that the mutex is not in use (unlocked) */
#define ACPI_MUTEX_NOT_ACQUIRED (u32) -1
#define ACPI_MUTEX_NOT_ACQUIRED (acpi_thread_id) 0
/* Table for the global mutexes */

5
include/acpi/platform/aclinux.h
View file

@ -59,6 +59,7 @@
#include <asm/acpi.h>
#include <linux/slab.h>
#include <linux/spinlock_types.h>
#include <asm/current.h>
/* Host-dependent types and defines */
@ -100,8 +101,8 @@
#define acpi_cpu_flags unsigned long
#define acpi_thread_id u32
#define acpi_thread_id struct task_struct *
static inline acpi_thread_id acpi_os_get_thread_id(void) { return 0; }
static inline acpi_thread_id acpi_os_get_thread_id(void) { return current; }
#endif /* __ACLINUX_H__ */