drm/virtio: Wake up all waiters when capset response comes in.
If multiple callers occur simultaneously, wake them all up. Signed-off-by: David Riley <davidriley@chromium.org> Link: http://patchwork.freedesktop.org/patch/msgid/20190605234423.11348-2-davidriley@chromium.orgSigned-off-by: Gerd Hoffmann <kraxel@redhat.com>
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