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[S390] qdio: prevent handling of buffers if count is zero
authorJan Glauber <jang@linux.vnet.ibm.com>
Wed, 23 Mar 2011 09:16:01 +0000 (10:16 +0100)
committerMartin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com>
Wed, 23 Mar 2011 09:15:59 +0000 (10:15 +0100)
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>

No differences found
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