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-rw-r--r--drivers/s390/cio/chsc.c3
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;
}