[Intel-wired-lan] [PATCH] igb: properly start/stop PTP during suspend/resume

[Keller, Jacob E]

On Wed, 2016-05-11 at 11:23 -0700, Jacob Keller wrote:
> Reported-by: Vidya Sagar <sagar.tv at gmail.com>
> Signed-off-by: Jacob Keller <jacob.e.keller at intel.com>
> ---
>  drivers/net/ethernet/intel/igb/igb_main.c | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/drivers/net/ethernet/intel/igb/igb_main.c
> b/drivers/net/ethernet/intel/igb/igb_main.c
> index 21727692bef6..8f740bc69fc3 100644
> --- a/drivers/net/ethernet/intel/igb/igb_main.c
> +++ b/drivers/net/ethernet/intel/igb/igb_main.c
> @@ -7527,6 +7527,8 @@ static int __igb_shutdown(struct pci_dev *pdev,
> bool *enable_wake,
>  	if (netif_running(netdev))
>  		__igb_close(netdev, true);
>  
> +	igb_ptp_stop(adapter);
> +
>  	igb_clear_interrupt_scheme(adapter);
>  
>  #ifdef CONFIG_PM
> @@ -7637,6 +7639,8 @@ static int igb_resume(struct device *dev)
>  		return -ENOMEM;
>  	}
>  
> +	igb_ptp_init(adapter);
> +
>  	igb_reset(adapter);
>  
>  	/* let the f/w know that the h/w is now under the control of
> the

Unfortunately I think this patch is wrong, my first pass at fixing was
to do igb_ptp_stop and igb_ptp_init, but this seems like it won't work
because we'll actually remove the PHC device, which we don't want to
do. I'm going to rework this patch and send a v2.

Thanks,
Jake