On Friday, January 21, 2011, Linus Torvalds wrote:
> On Fri, Jan 21, 2011 at 2:25 PM, Len Brown <lenb@xxxxxxxxxx> wrote:
> >
> > I don't know if fixing that symptom will fix the suspend
> > problem, but it can't hurt.
>
> Any particular patch/hack you had in mind for me to test? I'm leaving
> for LCA tomorrow, I'll happily test anything. Once I'm on the road,
> I'll still have access to that thing, but it's pitifully slow and will
> be the only computer I have available, so I won't be doing lots of
> random testng.
Something like this, perhaps. It doesn't blow up my Toshiba test box, so
hopefully it won't blow up yours ...
---
drivers/thermal/thermal_sys.c | 22 ++++++++++++++++++++--
1 file changed, 20 insertions(+), 2 deletions(-)
Index: linux-2.6/drivers/thermal/thermal_sys.c
===================================================================
--- linux-2.6.orig/drivers/thermal/thermal_sys.c
+++ linux-2.6/drivers/thermal/thermal_sys.c
@@ -62,6 +62,20 @@ static DEFINE_MUTEX(thermal_list_lock);
static unsigned int thermal_event_seqnum;
+static struct workqueue_struct *thermal_wq;
+
+static int __init thermal_start_workqueue(void)
+{
+ thermal_wq = alloc_workqueue("thermal", WQ_FREEZEABLE, 0);
+ return thermal_wq ? 0 : -ENOMEM;
+}
+
+static inline void thermal_destroy_workqueue(void)
+{
+ if (thermal_wq)
+ destroy_workqueue(thermal_wq);
+}
+
static struct genl_family thermal_event_genl_family = {
.id = GENL_ID_GENERATE,
.name = THERMAL_GENL_FAMILY_NAME,
@@ -611,10 +625,10 @@ static void thermal_zone_device_set_poll
return;
if (delay > 1000)
- schedule_delayed_work(&(tz->poll_queue),
+ queue_delayed_work(thermal_wq, &(tz->poll_queue),
round_jiffies(msecs_to_jiffies(delay)));
else
- schedule_delayed_work(&(tz->poll_queue),
+ queue_delayed_work(thermal_wq, &(tz->poll_queue),
msecs_to_jiffies(delay));
}
@@ -1306,11 +1320,14 @@ static int __init thermal_init(void)
int result = 0;
result = class_register(&thermal_class);
+ if (!result)
+ result = thermal_start_workqueue();
if (result) {
idr_destroy(&thermal_tz_idr);
idr_destroy(&thermal_cdev_idr);
mutex_destroy(&thermal_idr_lock);
mutex_destroy(&thermal_list_lock);
+ thermal_destroy_workqueue();
}
result = genetlink_init();
return result;
@@ -1328,6 +1345,7 @@ static void __exit thermal_exit(void)
idr_destroy(&thermal_cdev_idr);
mutex_destroy(&thermal_idr_lock);
mutex_destroy(&thermal_list_lock);
+ thermal_destroy_workqueue();
genetlink_exit();
}
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