netdev - Re: [PATCHv2] usbnet: Resubmit interrupt URB more often

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Message-Id: <20110420.012431.104074243.davem@davemloft.net>
Date:	Wed, 20 Apr 2011 01:24:31 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	pstew@...omium.org
Cc:	netdev@...r.kernel.org, bhutchings@...arflare.com
Subject: Re: [PATCHv2] usbnet: Resubmit interrupt URB more often

From: Paul Stewart <pstew@...omium.org>
Date: Tue, 19 Apr 2011 10:44:12 -0700

> The second class of device are those which shut down the device
> during suspend.  During a suspend-resume cycle, the device is
> re-enumerated at system resume, and for whatever reason
> usbnet_resume may be called on the device during the call-tree
> from usbnet_open-> usb_autopm_get_interface, which may cause a
> race where the first change above may cause the bh to submit the
> interrupt urb before usbnet_open() does.  As a result, I've added
> an EALREADY check and a fix to urb.c to send one.

You'll need to submit the generic urb submission change via the USB
maintainers, not networking.
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