Mark Lord wrote:
Linus Torvalds wrote:
..
There's a different (but related to all the same freezer problems)
patch by Rafael Wysocki <[email protected]>:
Re: [RFC][PATCH][EXPERIMENTAL] Make kernel threads nonfreezable by
default
Message-Id: <[email protected]>
I'll hunt for Rafael's patch next.
Mmm.. Rafael's patch appears to be part of a large series of 15 patches,
and it's not totally clear to me how to test just that part of it,
so I think I'll leave things as is (working!) for now.
Here's my current fix:
-- snip --
Regarding commit 7ed92f1a149dddc3cb537ccd7441e98adac12c3e
"USB: make the autosuspend workqueue thread freezable":
This commit causes USB lockups on resume from Suspend-to-RAM
on my Core2duo notebook. Applying the patch below to revert
the commit fixes the problem for me in 2.6.22-rc3.
Signed-off-by: Mark Lord <[email protected]>
---
--- b0rken/drivers/usb/core/usb.c 2007-05-29 13:32:32.000000000 -0400
+++ linux/drivers/usb/core/usb.c 2007-05-29 13:27:10.000000000 -0400
@@ -205,11 +205,7 @@
static int ksuspend_usb_init(void)
{
- /* This workqueue is supposed to be both freezable and
- * singlethreaded. Its job doesn't justify running on more
- * than one CPU.
- */
- ksuspend_usb_wq = create_freezeable_workqueue("ksuspend_usbd");
+ ksuspend_usb_wq = create_singlethread_workqueue("ksuspend_usbd");
if (!ksuspend_usb_wq)
return -ENOMEM;
return 0;
-
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