diff options
| -rw-r--r-- | drivers/crypto/hisilicon/qm.c | 13 |
1 files changed, 3 insertions, 10 deletions
diff --git a/drivers/crypto/hisilicon/qm.c b/drivers/crypto/hisilicon/qm.c index fe35ea949a5b..7c1f8ab28f99 100644 --- a/drivers/crypto/hisilicon/qm.c +++ b/drivers/crypto/hisilicon/qm.c @@ -1603,16 +1603,9 @@ static ssize_t qm_cmd_write(struct file *filp, const char __user *buffer, if (count > QM_DBG_WRITE_LEN) return -ENOSPC; - cmd_buf = kzalloc(count + 1, GFP_KERNEL); - if (!cmd_buf) - return -ENOMEM; - - if (copy_from_user(cmd_buf, buffer, count)) { - kfree(cmd_buf); - return -EFAULT; - } - - cmd_buf[count] = '\0'; + cmd_buf = memdup_user_nul(buffer, count); + if (IS_ERR(cmd_buf)) + return PTR_ERR(cmd_buf); cmd_buf_tmp = strchr(cmd_buf, '\n'); if (cmd_buf_tmp) { |