[PATCH v3] net: stmmac: fix fatal bus error on resume by reinitializing RX buffers

[Jakub Raczynski]

On Thu, Jun 04, 2026 at 10:45:54PM +0800, Ding Hui wrote:
> From: Ding Hui <dinghui at lixiang.com>
> +	for (queue = 0; queue < priv->plat->rx_queues_to_use; queue++) {
> +		ret = stmmac_reinit_rx_descriptors(priv, &priv->dma_conf,
> +						   queue);
> +		if (ret) {
> +			netdev_err(priv->dev,
> +				   "%s: rx desc reinit failed on queue %u\n",
> +				   __func__, queue);
> +			mutex_unlock(&priv->lock);
> +			rtnl_unlock();
> +			return ret;
> +		}
> +	}

This is not directly related to the patch, but rather stmmac_resume() itself,
but doesn't this return and hw_setup one leave bunch of descriptor memory
hanging and effectively leaked?

> +
>  	ret = stmmac_hw_setup(ndev);
>  	if (ret < 0) {
>  		netdev_err(priv->dev, "%s: Hw setup failed\n", __func__);
> -- 

Other than that, I don't see any obvious issues.

Reviewed-by: Jakub Raczynski <j.raczynski at samsung.com>