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-rw-r--r--drivers/s390/cio/ccwgroup.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/s390/cio/ccwgroup.c b/drivers/s390/cio/ccwgroup.c
index c522e9313c50..ae66875a934d 100644
--- a/drivers/s390/cio/ccwgroup.c
+++ b/drivers/s390/cio/ccwgroup.c
@@ -372,7 +372,7 @@ int ccwgroup_create_dev(struct device *parent, struct ccwgroup_driver *gdrv,
goto error;
}
/* Check for trailing stuff. */
- if (i == num_devices && strlen(buf) > 0) {
+ if (i == num_devices && buf && strlen(buf) > 0) {
rc = -EINVAL;
goto error;
}