1 files changed, 5 insertions, 1 deletions

diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index 1e1a7770a6b9..b8cf50fcd64d 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -880,6 +880,10 @@ static void hid_output_field(struct hid_field *field, __u8 *data)
         unsigned size = field->report_size;
         unsigned n;
 
+        /* make sure the unused bits in the last byte are zeros */
+        if (count > 0 && size > 0)
+                data[(count*size-1)/8] = 0;
+
         for (n = 0; n < count; n++) {
                 if (field->logical_minimum < 0) /* signed values */
                         implement(data, offset + n * size, size, s32ton(field->value[n], size));
@@ -947,7 +951,7 @@ int hid_input_report(struct hid_device *hid, int type, u8 *data, int size, int i
         }
 
 #ifdef DEBUG_DATA
-        printk(KERN_DEBUG __FILE__ ": report (size %u) (%snumbered)\n", len, report_enum->numbered ? "" : "un");
+        printk(KERN_DEBUG __FILE__ ": report (size %u) (%snumbered)\n", size, report_enum->numbered ? "" : "un");
 #endif
 
         n = 0;                          /* Normally report number is 0 */