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由 Kevin Wolf 提交于
Some devices allow a media change between read-only and read-write media. They need to adapt the permissions in their .change_media_cb() implementation, which can fail. So add an Error parameter to the function. Signed-off-by: NKevin Wolf <kwolf@redhat.com> Reviewed-by: NMax Reitz <mreitz@redhat.com> Acked-by: NFam Zheng <famz@redhat.com>
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