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net: fec: Do proper error checking for enet_out clk
An error code returned by devm_clk_get() might have other meanings than "This clock doesn't exist". So use devm_clk_get_optional() and handle all remaining errors as fatal. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -3866,9 +3866,11 @@ fec_probe(struct platform_device *pdev)
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fep->itr_clk_rate = clk_get_rate(fep->clk_ahb);
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/* enet_out is optional, depends on board */
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fep->clk_enet_out = devm_clk_get(&pdev->dev, "enet_out");
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if (IS_ERR(fep->clk_enet_out))
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fep->clk_enet_out = NULL;
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fep->clk_enet_out = devm_clk_get_optional(&pdev->dev, "enet_out");
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if (IS_ERR(fep->clk_enet_out)) {
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ret = PTR_ERR(fep->clk_enet_out);
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goto failed_clk;
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}
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fep->ptp_clk_on = false;
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mutex_init(&fep->ptp_clk_mutex);
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