diff options
| author | Cornelia Huck <cornelia.huck@de.ibm.com> | 2008-07-14 09:58:48 +0200 |
|---|---|---|
| committer | Heiko Carstens <heiko.carstens@de.ibm.com> | 2008-07-14 10:02:06 +0200 |
| commit | b3a686f47a3615fcfec0a01c4103c50bb9621369 (patch) | |
| tree | 5929e2a7cbca0148d68b822e50887bf61aa73f66 /drivers/s390/cio/css.c | |
| parent | [S390] cio: Export some symbols for modular css drivers. (diff) | |
| download | linux-b3a686f47a3615fcfec0a01c4103c50bb9621369.tar.xz linux-b3a686f47a3615fcfec0a01c4103c50bb9621369.zip | |
[S390] cio: Base message subchannel handling.
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>
Diffstat (limited to 'drivers/s390/cio/css.c')
| -rw-r--r-- | drivers/s390/cio/css.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c index bc3a8e4a49f7..062716cf0f0c 100644 --- a/drivers/s390/cio/css.c +++ b/drivers/s390/cio/css.c @@ -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); |