powerpc/rtas: improve ppc_rtas_rmo_buf_show documentation
Add kerneldoc for ppc_rtas_rmo_buf_show(), the callback for /proc/powerpc/rtas/rmo_buffer, explaining its expected use. Signed-off-by:Nathan Lynch <nathanl@linux.ibm.com> Reviewed-by:
Alexey Kardashevskiy <aik@ozlabs.ru> Reviewed-by:
Andrew Donnellan <ajd@linux.ibm.com> Signed-off-by:
Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210408140630.205502-2-nathanl@linux.ibm.com
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5ae5bc12
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