ChangeSet 1.1722.83.10, 2004/06/02 13:55:44-07:00, [EMAIL PROTECTED]
[PATCH] USB: fix race between disconnect and write of acm driver
acm uses a workqueue to defer part of a write operation.
In case of disconnect this work must be waited for.
- fix race between write and disconnect
Signed-off-by: Oliver Neukum <[EMAIL PROTECTED]>
Signed-off-by: Vojtech Pavlik <[EMAIL PROTECTED]>
Signed-off-by: Greg Kroah-Hartman <[EMAIL PROTECTED]>
drivers/usb/class/cdc-acm.c | 2 ++
1 files changed, 2 insertions(+)
diff -Nru a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
--- a/drivers/usb/class/cdc-acm.c Fri Jun 18 11:05:43 2004
+++ b/drivers/usb/class/cdc-acm.c Fri Jun 18 11:05:43 2004
@@ -691,6 +691,8 @@
usb_unlink_urb(acm->readurb);
usb_unlink_urb(acm->writeurb);
+ flush_scheduled_work(); /* wait for acm_softint */
+
kfree(acm->ctrlurb->transfer_buffer);
usb_driver_release_interface(&acm_driver, acm->data);
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