[PATCH] powerpc/pseries/dlpar: handle ibm,configure-connector delay status

[Tyrel Datwyler]

On 1/6/21 6:59 PM, Nathan Lynch wrote:
> dlpar_configure_connector() has two problems in its handling of
> ibm,configure-connector's return status:
> 
> 1. When the status is -2 (busy, call again), we call
>    ibm,configure-connector again immediately without checking whether
>    to schedule, which can result in monopolizing the CPU.
> 2. Extended delay status (9900..9905) goes completely unhandled,
>    causing the configuration to unnecessarily terminate.
> 
> Fix both of these issues by using rtas_busy_delay().
> 
> Fixes: ab519a011caa ("powerpc/pseries: Kernel DLPAR Infrastructure")
> Signed-off-by: Nathan Lynch <nathanl at linux.ibm.com>

Reviewed-by: Tyrel Datwyler <tyreld at linux.ibm.com>