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| author | Alan Stern <stern@rowland.harvard.edu> | 2007-05-22 17:38:39 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2007-05-23 10:45:50 +0400 |
| commit | 7ed92f1a149dddc3cb537ccd7441e98adac12c3e (patch) | |
| tree | 86408164dd5cfbb48bade9ca49601c4f2d7edd16 | |
| parent | 8ab5e8c0ca55c4b40d254f7043a9052345fcd343 (diff) | |
| download | linux-7ed92f1a149dddc3cb537ccd7441e98adac12c3e.tar.xz | |
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 <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | 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 18ddc5e67e39..80627b6a2bf9 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; |