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由 Max Reitz 提交于
On one occasion, hdev_open() returned -1 in case of an unknown error instead of a proper -errno value. Adjust this to match the behavior of raw_open() (in raw-win32), which is to return -EINVAL in this case. Also, change the call to error_setg*() to match the one in raw_open() as well. Signed-off-by: NMax Reitz <mreitz@redhat.com> Reviewed-by: NEric Blake <eblake@redhat.com> Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
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