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[S390] cio: observe chpid valid flag 

Check validity flag of CHPID description data before continuing with
channel-path initialization.

Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Peter Oberparleiter 2007-04-27 16:01:29 +02:00 committed by Martin Schwidefsky
parent e6b6e10ac1
commit c9182e0f42
1 changed files with 4 additions and 0 deletions
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4
drivers/s390/cio/chp.c
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@ -339,6 +339,10 @@ int chp_new(struct chp_id chpid)
ret = chsc_determine_channel_path_description(chpid, &chp->desc);
if (ret)
goto out_free;
if ((chp->desc.flags & 0x80) == 0) {
ret = -ENODEV;
goto out_free;
}
/* Get channel-measurement characteristics. */
if (css_characteristics_avail && css_chsc_characteristics.scmc
&& css_chsc_characteristics.secm) {