Re: [PATCH V9 7/9] cxl/port: Introduce cxl_cdat_valid()

[Alison Schofield]

On Tue, May 31, 2022 at 08:26:30AM -0700, Ira Weiny wrote:
> From: Ira Weiny <ira.weiny@xxxxxxxxx>
> 
> The CDAT data is protected by a checksum and should be the proper
> length.
> 
> Introduce cxl_cdat_valid() to validate the data.  While at it check and
> store the sequence number.
> 
Store it for ?

>  
> +static bool cxl_cdat_valid(struct device *dev, struct cxl_cdat *cdat)
> +{

snip

> +
> +	seq = FIELD_GET(CDAT_HEADER_DW3_SEQUENCE, table[3]);
> +	/* Store the sequence for now. */
> +	if (cdat->seq != seq) {
> +		dev_info(dev, "CDAT seq change %x -> %x\n", cdat->seq, seq);
> +		cdat->seq = seq;
> +	}
> +

Wondering when does/will this sequence number come into play?

>