ACPI: don't cond_resched() when irqs_disabled()

The ACPI interpreter usually runs with irqs enabled.
However, during suspend/resume it runs with
irqs disabled to evaluate _GTS/_BFS, as well as
by irqrouter_resume() which evaluates _CRS, _PRS, _SRS.

http://bugzilla.kernel.org/show_bug.cgi?id=12252

Signed-off-by: Wu Fengguang <wfg@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 5 insertions, 1 deletions

diff --git a/include/acpi/platform/aclinux.h b/include/acpi/platform/aclinux.h
index 029c8c06c15..0515e754449 100644
--- a/include/acpi/platform/aclinux.h
+++ b/include/acpi/platform/aclinux.h
@@ -141,6 +141,10 @@ static inline void *acpi_os_acquire_object(acpi_cache_t * cache)
 /*
  * We need to show where it is safe to preempt execution of ACPICA
  */
-#define ACPI_PREEMPTION_POINT() cond_resched()
+#define ACPI_PREEMPTION_POINT()         \
+        do {                            \
+                if (!irqs_disabled())   \
+                        cond_resched(); \
+        } while (0)
 
 #endif                          /* __ACLINUX_H__ */