--- 8548ae7a176ca4cf0ac48a41a278eb2f49314b12
+++ edd7b7f3b26bd2774f05145941b60ec00c48013e
@@ -969,7 +969,7 @@ int tpm_open(struct inode *inode, struct
 		return -EBUSY;
 	}
 
-	chip->data_buffer = kmalloc(TPM_BUFSIZE * sizeof(u8), GFP_KERNEL);
+	chip->data_buffer = kzalloc(TPM_BUFSIZE, GFP_KERNEL);
 	if (chip->data_buffer == NULL) {
 		clear_bit(0, &chip->is_open);
 		put_device(chip->dev);