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[S390] cio: Base message subchannel handling.

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Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
This commit is contained in:
Cornelia Huck
2008-07-14 09:58:48 +02:00
committed by Heiko Carstens
parent 44a1c19e3b
commit b3a686f47a
3 changed files with 27 additions and 7 deletions
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2
drivers/s390/cio/css.c
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@@ -332,6 +332,8 @@ int css_sch_is_valid(struct schib *schib)
{
if ((schib->pmcw.st == SUBCHANNEL_TYPE_IO) && !schib->pmcw.dnv)
return 0;
if ((schib->pmcw.st == SUBCHANNEL_TYPE_MSG) && !schib->pmcw.w)
return 0;
return 1;
}
EXPORT_SYMBOL_GPL(css_sch_is_valid);