tree 7a9d272840b3e7d106d30b93d71a0c36a3c30790
parent 7ad9c9d27048547e96e4e3a13b5780ec6f81bb9f
author Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> 1274954518 +0900
committer Michael S. Tsirkin <mst@redhat.com> 1274957713 +0300

vhost-net: fix to check the return value of copy_to/from_user() correctly

copy_to/from_user() returns the number of bytes that could not be copied.

So we need to check if it is not zero, and in that case, we should return
the error number -EFAULT rather than directly return the return value from
copy_to/from_user().

Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>