[Skiboot] [PATCH 1/2] pcie-slot: Don't fail powering on an already on switch

[Michael Neuling]

On Mon, 2018-04-09 at 13:41 +1000, Benjamin Herrenschmidt wrote:
> If the power state is already the required value, return
> OPAL_SUCCESS rather than OPAL_PARAMETER to avoid spurrious
> errors during boot.
> 
> Signed-off-by: Benjamin Herrenschmidt <benh at kernel.crashing.org>

Acked-By: Michael Neuling <mikey at neuling.org>

> ---
>  core/pcie-slot.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/core/pcie-slot.c b/core/pcie-slot.c
> index c3069040..45996342 100644
> --- a/core/pcie-slot.c
> +++ b/core/pcie-slot.c
> @@ -205,7 +205,7 @@ static int64_t pcie_slot_set_power_state_ext(struct
> pci_slot *slot, uint8_t val,
>  	uint16_t state;
>  
>  	if (slot->power_state == val)
> -		return OPAL_PARAMETER;
> +		return OPAL_SUCCESS;
>  
>  	/* Update the power state and return immediately if the power
>  	 * control functionality isn't supported on the PCI slot.