6.6-stable review patch. If anyone has any objections, please let me know.
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From: Eli Billauer eli.billauer@gmail.com
commit ad899c301c880766cc709aad277991b3ab671b66 upstream.
As the wakeup work item now runs on a separate workqueue, it needs to be flushed separately along with flushing the device's workqueue.
Also, move the destroy_workqueue() call to the end of the exit method, so that deinitialization is done in the opposite order of initialization.
Fixes: ccbde4b128ef ("char: xillybus: Don't destroy workqueue from work item running on it") Cc: stable stable@kernel.org Signed-off-by: Eli Billauer eli.billauer@gmail.com Link: https://lore.kernel.org/r/20240816070200.50695-1-eli.billauer@gmail.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/char/xillybus/xillyusb.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-)
--- a/drivers/char/xillybus/xillyusb.c +++ b/drivers/char/xillybus/xillyusb.c @@ -2093,9 +2093,11 @@ static int xillyusb_discovery(struct usb * just after responding with the IDT, there is no reason for any * work item to be running now. To be sure that xdev->channels * is updated on anything that might run in parallel, flush the - * workqueue, which rarely does anything. + * device's workqueue and the wakeup work item. This rarely + * does anything. */ flush_workqueue(xdev->workq); + flush_work(&xdev->wakeup_workitem);
xdev->num_channels = num_channels;
@@ -2274,9 +2276,9 @@ static int __init xillyusb_init(void)
static void __exit xillyusb_exit(void) { - destroy_workqueue(wakeup_wq); - usb_deregister(&xillyusb_driver); + + destroy_workqueue(wakeup_wq); }
module_init(xillyusb_init);