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-rw-r--r--drivers/s390/cio/chp.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/s390/cio/chp.c b/drivers/s390/cio/chp.c
index 6e04521accd..8a5839147f8 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) {