Re: [External] : [PATCH net-next v29 3/3] mctp pcc: Implement MCTP over PCC Transport

[ALOK TIWARI]

On 9/26/2025 12:30 AM, Adam Young wrote:
> +static int initialize_MTU(struct net_device *ndev)
> +{
> +	struct mctp_pcc_ndev *mctp_pcc_ndev = netdev_priv(ndev);
> +	struct mctp_pcc_mailbox *outbox;
> +	int mctp_pcc_mtu;
> +
> +	outbox = &mctp_pcc_ndev->outbox;
> +	outbox->chan = pcc_mbox_request_channel(&outbox->client, outbox->index);
> +	mctp_pcc_mtu = outbox->chan->shmem_size - sizeof(struct pcc_header);

de-reference outbox->chan->shmem_size before checking IS_ERR(outbox->chan)

> +	if (IS_ERR(outbox->chan))
> +		return PTR_ERR(outbox->chan);
> +
> +	pcc_mbox_free_channel(mctp_pcc_ndev->outbox.chan);
> +
> +	mctp_pcc_ndev = netdev_priv(ndev);
> +	ndev->mtu = MCTP_MIN_MTU;
> +	ndev->max_mtu = mctp_pcc_mtu;
> +	ndev->min_mtu = MCTP_MIN_MTU;
> +
> +	return 0;
> +}


Thanks,
Alok