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USB: cdc-wdm: poll must return POLLHUP if device is gone
authorBjørn Mork <bjorn@mork.no>
Wed, 9 May 2012 11:53:21 +0000 (13:53 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 11 May 2012 22:19:22 +0000 (15:19 -0700)
Else the poll will be restarted indefinitely in a tight loop,
preventing final device cleanup.

Cc: Oliver Neukum <oliver@neukum.org>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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