crypto: hisilicon/qm - replace 'sprintf' with 'scnprintf'

Replace 'sprintf' with 'scnprintf' to avoid overrun.

Signed-off-by: Weili Qian <qianweili@huawei.com>
Reviewed-by: Zhou Wang <wangzhou1@hisilicon.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/drivers/crypto/hisilicon/qm.c b/drivers/crypto/hisilicon/qm.c
index 17f84db..25c5414 100644 (file)
--- a/drivers/crypto/hisilicon/qm.c
+++ b/drivers/crypto/hisilicon/qm.c
@@ -932,7 +932,8 @@ static ssize_t qm_debug_read(struct file *filp, char __user *buf,
                return -EINVAL;
        }
        mutex_unlock(&file->lock);
-       ret = sprintf(tbuf, "%u\n", val);
+
+       ret = scnprintf(tbuf, QM_DBG_TMP_BUF_LEN, "%u\n", val);
        return simple_read_from_buffer(buf, count, pos, tbuf, ret);
 }