[PATCH 1/6] powerpc/powernv: opal-kmsg use flush fallback from console code

[Russell Currey]

On Mon, 2018-04-09 at 15:40 +1000, Nicholas Piggin wrote:
> Use the more refined and tested event polling loop from
> opal_put_chars
> as the fallback console flush in the opal-kmsg path. This loop is
> used
> by the console driver today, whereas the opal-kmsg fallback is not
> likely to have been used for years.
> 
> Use WARN_ONCE rather than a printk when the fallback is invoked to
> prepare for moving the console flush into a common function.
> 
> Cc: Russell Currey <ruscur at russell.cc>
> Signed-off-by: Nicholas Piggin <npiggin at gmail.com>

Reviewed-by: Russell Currey <ruscur at russell.cc>