Re: [PATCH]generic usb serial driver
Greg KH <[email protected]>
| Newsgroups | gmane.linux.usb.devel |
|---|---|
| Message-ID | <[email protected]> |
On Thu, Mar 29, 2007 at 02:25:34PM +0200, Oliver Neukum wrote:
> @@ -332,12 +330,12 @@
>
> dbg("%s - port %d", __FUNCTION__, port->number);
>
> - port->write_urb_busy = 0;
> if (urb->status) {
> dbg("%s - nonzero write bulk status received: %d", __FUNCTION__, urb->status);
> return;
> }
> -
> + smp_mb(); /* we are busy until we have read our status */
I don't understand why this is necessary, we shouldn't have to put this
all over our drivers, if so, something is really wrong.
thanks,
greg k-h
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