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Currently the kernel does not expose the revision file. With that about to change (due in 4.10) we can read all the information required from separate files and avoid opening the config one. The latter has the [negative] side effect of waking up the device, which in some cases can be quite costly. Reviewed-by: Adam Jackson <ajax@redhat.com> Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
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