[PATCH 23/29] USB: make the autosuspend workqueue thread freezable
Greg Kroah-Hartman <[email protected]>
| Newsgroups | gmane.linux.usb.devel |
|---|---|
| Message-ID | <[email protected]> |
From: Alan Stern <[email protected]> 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; -- 1.5.1.4 ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ [email protected] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel