Re: [PATCH net-next] net: ethernet: ti: cpdma: correct error handling for chan create

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From: Ivan Khoronzhuk <ivan.khoronzhuk@xxxxxxxxxx>
Date: Wed,  6 Dec 2017 16:54:09 +0200

> @@ -3065,10 +3065,16 @@ static int cpsw_probe(struct platform_device *pdev)
>  	}
>  
>  	cpsw->txv[0].ch = cpdma_chan_create(cpsw->dma, 0, cpsw_tx_handler, 0);
> +	if (WARN_ON(IS_ERR(cpsw->txv[0].ch))) {
> +		dev_err(priv->dev, "error initializing tx dma channel\n");
> +		ret = PTR_ERR(cpsw->txv[0].ch);
> +		goto clean_dma_ret;
> +	}
> +

You're already emitting a proper dev_err() message, therefore WARN_ON()
is a duplicate notification to the logs and therefore not appropriate.
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