[PATCH] ata: fixes kernel crash while tracing ata_eh_link_autopsy event

[Tejun Heo]

Hello,

On Wed, Oct 25, 2017 at 03:52:56PM +0530, Rameshwar Prasad Sahu wrote:
> @@ -288,8 +289,8 @@
>  	),
> 
>  	TP_fast_assign(
> -		__entry->ata_port	= dev->link->ap->print_id;
> -		__entry->ata_dev	= dev->link->pmp + dev->devno;
> +		__entry->ata_port	= link->ap->print_id;
> +		__entry->ata_dev	= link->pmp + link->device->devno;

The above is wrong if there are multiple devices on the link.  It
probably should take both link and dev and use dev iff it's not NULL.

Thanks.

-- 
tejun