Subject: Re: [PATCH net-next 6/7] net: mvpp2: ptp: add interrupt handling

From: Andrew Lunn <[email-masked]>
Date: Thu, 3 Sep 2020 03:39:40 +0200

> +static void mvpp2_isr_handle_ptp_queue(struct mvpp2_port *port, int nq)
> +{
> +	void __iomem *ptp_q;
> +	u32 r0, r1, r2;
> +
> +	ptp_q = port->priv->iface_base + MVPP22_PTP_BASE(port->gop_id);
> +	if (nq)
> +		ptp_q += MVPP22_PTP_TX_Q1_R0 - MVPP22_PTP_TX_Q0_R0;
> +
> +	while (1) {
> +		r0 = readl_relaxed(ptp_q + MVPP22_PTP_TX_Q0_R0) & 0xffff;
> +		if (!r0)
> +			break;
> +
> +		r1 = readl_relaxed(ptp_q + MVPP22_PTP_TX_Q0_R1) & 0xffff;
> +		r2 = readl_relaxed(ptp_q + MVPP22_PTP_TX_Q0_R2) & 0xffff;
> +	}
> +}

Hi Russell

That is a rather odd interrupt handler, basically throwing everything
away. Maybe add a comment about what is going on?

Reviewed-by: Andrew Lunn <[email-masked]>

    Andrew