From: Ursula Braun <braunu@de.ibm.com>
Date: Sat, 9 Feb 2008 17:24:32 +0000 (+0100)
Subject: [S390] qdio: avoid hang when establishing qdio queues
X-Git-Tag: v2.6.25-rc1~16^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bf3f837804997e5f5d9888051e9e5356961af0f2;p=pandora-kernel.git

[S390] qdio: avoid hang when establishing qdio queues

If qdio establish runs in parallel with a channel error,
ccw_device_start_timeout may not trigger the qdio_timeout_handler.
In this case neither QDIO_IRQ_STATE_ESTABLISHED nor
QDIO_IRQ_STATE_ERR is reached and the following wait_event hangs
forever.
Solution: do not make use of the timeout option with
ccw_device_start, but add a timeout to the following wait_event.

Signed-off-by: Ursula Braun <braunu@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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