From: Horst Hummel <horst.hummel@de.ibm.com>
Date: Wed, 1 Feb 2006 11:06:37 +0000 (-0800)
Subject: [PATCH] s390: dasd wait for clear i/o interrupt
X-Git-Tag: v2.6.16-rc2~36
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c2ba444d1d871d3f6cd3bc5e7d8e19c48c8c02a4;p=pandora-kernel.git

[PATCH] s390: dasd wait for clear i/o interrupt

The sleep_on function clears a running cqr without waiting for the related
interrupt.  This can lead to a panic at the time the interrupt is processed
because the related memory might already be freed.  Wait for clear-interrupt
and de-queue cqr prior to return.

Signed-off-by: Horst Hummel <horst.hummel@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

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