From: Jan Glauber <jang@linux.vnet.ibm.com>
Date: Wed, 23 Mar 2011 09:16:01 +0000 (+0100)
Subject: [S390] qdio: prevent handling of buffers if count is zero
X-Git-Tag: v2.6.39-rc1~67^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9a26513eb67ec4b2cb1744834076afad21b68aac;p=pandora-kernel.git

[S390] qdio: prevent handling of buffers if count is zero

Exit do_QDIO early if the buffer count is zero to prevent side effects
in the following functions.

Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---

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