1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/s390/cio/chsc.c b/drivers/s390/cio/chsc.c
index 72187e54dcac..4a9da5bdd535 100644
--- a/drivers/s390/cio/chsc.c
+++ b/drivers/s390/cio/chsc.c
@@ -918,12 +918,13 @@ chp_measurement_read(struct kobject *kobj, char *buf, loff_t off, size_t count)
         chp = to_channelpath(container_of(kobj, struct device, kobj));
         css = to_css(chp->dev.parent);
 
-        size = sizeof(struct cmg_chars);
+        size = sizeof(struct cmg_entry);
 
         /* Only allow single reads. */
         if (off || count < size)
                 return 0;
         chp_measurement_copy_block((struct cmg_entry *)buf, css, chp->id);
+        count = size;
         return count;
 }