netdev - RE: [PATCH V13 2/7] net: sxgbe: add basic framework for Samsung 10Gb ethernet driver

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Date:	Tue, 25 Mar 2014 09:09:18 -0700
From:	Byungho An <bh74.an@...sung.com>
To:	'Francois Romieu' <romieu@...zoreil.com>
Cc:	netdev@...r.kernel.org, linux-samsung-soc@...r.kernel.org,
	devicetree@...r.kernel.org, 'David Miller' <davem@...emloft.net>,
	'GIRISH K S' <ks.giri@...sung.com>,
	'SIVAREDDY KALLAM' <siva.kallam@...sung.com>,
	'Vipul Chandrakant' <vipul.pandya@...sung.com>,
	'Ilho Lee' <ilho215.lee@...sung.com>
Subject: RE: [PATCH V13 2/7] net: sxgbe: add basic framework for Samsung 10Gb
 ethernet driver

Francois Romieu <romieu@...zoreil.com>:
> Byungho An <bh74.an@...sung.com> :
> [...]
> > How about below ?
> 
> The for loops should be unrolled.
> 
> (style: no need to join before branching)
> 
> I must go to work, so you'll have to fill the dots in the code below:
> 
>         priv = sxgbe_drv_probe(&(pdev->dev), plat_dat, addr);
>         if (!priv) {
>                 pr_err("%s: main driver probe failed\n", __func__);
>                 goto err_something;
>         }
> 
>         /* Get the SXGBE common INT information */
>         priv->irq  = irq_of_parse_and_map(node, 0);
>         if (priv->irq <= 0) {
>                 dev_err(dev, "sxgbe common irq parsing failed\n");
>                 goto err_drv_remove;
>         }
> 
>         /* Get the TX/RX IRQ numbers */
>         for (i = 0, chan = 1; i < SXGBE_TX_QUEUES; i++) {
>                 priv->txq[i]->irq_no = irq_of_parse_and_map(node, chan++);
>                 if (priv->txq[i]->irq_no <= 0) {
>                         dev_err(dev, "sxgbe tx irq parsing failed\n");
>                         goto err_tx_irq_unmap;
>                 }
>         }
> 
>         for (i = 0; i < SXGBE_RX_QUEUES; i++) {
>                 priv->rxq[i]->irq_no = irq_of_parse_and_map(node, chan++);
>                 if (priv->rxq[i]->irq_no <= 0) {
>                         dev_err(dev, "sxgbe rx irq parsing failed\n");
>                         goto err_rx_irq_unmap;
>                 }
>         }
> 
>         platform_set_drvdata(pdev, priv->dev);
> 
>         pr_debug("platform driver registration completed\n");
> 
>         return 0;
> 
> err_rx_irq_unmap:
> 	/* TODO: check that 'i' isn't unsigned. */
> 	while (i--)
> 		irq_dispose_mapping(priv->rx[i]->irq_no);
> 	i = SXGBE_TX_QUEUES;
> err_tx_irq_unmap:
> 	while (i--)
> 		irq_dispose_mapping(priv->tx[i]->irq_no);
> 	irq_dispose_mapping(priv->irq);
> err_drv_remove:
>         sxgbe_drv_remove(ndev);
> err_something:
> 	...
> 
OK, thanks
> --
> Ueimor

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