From c9182e0f42c5646e670c2166b6d6638052d574af Mon Sep 17 00:00:00 2001 From: Peter Oberparleiter Date: Fri, 27 Apr 2007 16:01:29 +0200 Subject: [PATCH] [S390] cio: observe chpid valid flag Check validity flag of CHPID description data before continuing with channel-path initialization. Signed-off-by: Peter Oberparleiter Signed-off-by: Martin Schwidefsky --- drivers/s390/cio/chp.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/s390/cio/chp.c b/drivers/s390/cio/chp.c index 6e04521accd8..8a5839147f8a 100644 --- a/drivers/s390/cio/chp.c +++ b/drivers/s390/cio/chp.c @@ -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) { -- 2.39.5