Gitweb:     
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=7ed92f1a149dddc3cb537ccd7441e98adac12c3e
Commit:     7ed92f1a149dddc3cb537ccd7441e98adac12c3e
Parent:     8ab5e8c0ca55c4b40d254f7043a9052345fcd343
Author:     Alan Stern <[EMAIL PROTECTED]>
AuthorDate: Tue May 22 09:38:39 2007 -0400
Committer:  Greg Kroah-Hartman <[EMAIL PROTECTED]>
CommitDate: Tue May 22 23:45:50 2007 -0700

    USB: make the autosuspend workqueue thread freezable
    
    This patch (as881b) makes the ksuspend_usb_wq workqueue freezable.  We
    don't want a rogue workqueue thread running around, unexpectedly
    suspending or resuming USB devices in the middle of a system sleep
    transition.
    
    This fixes Bugzilla #8498.
    
    Signed-off-by: Alan Stern <[EMAIL PROTECTED]>
    Signed-off-by: Greg Kroah-Hartman <[EMAIL PROTECTED]>
---
 drivers/usb/core/usb.c |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)

diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c
index 18ddc5e..80627b6 100644
--- a/drivers/usb/core/usb.c
+++ b/drivers/usb/core/usb.c
@@ -205,7 +205,11 @@ struct device_type usb_device_type = {
 
 static int ksuspend_usb_init(void)
 {
-       ksuspend_usb_wq = create_singlethread_workqueue("ksuspend_usbd");
+       /* 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");
        if (!ksuspend_usb_wq)
                return -ENOMEM;
        return 0;
-
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