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Commit ac9b91f3 authored by Masahiro Yamada's avatar Masahiro Yamada Committed by Wolfram Sang
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i2c: uniphier_f: error out if clock rate is zero 



This input clock is used to generate the sampling clock for I2C bus.
If the clock rate is zero, there is something wrong with the clock
driver.  Bail out with the appropriate error message in such a case.
It would make it easier to find the root cause of failure.

Signed-off-by: default avatarMasahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: default avatarWolfram Sang <wsa@the-dreams.de>
parent 2d5d23b9

drivers/i2c/busses/i2c-uniphier-f.c

+5 −1
Original line number Diff line number Diff line
@@ -481,6 +481,10 @@ static int uniphier_fi2c_clk_init(struct device *dev, 
		return ret;



	clk_rate = clk_get_rate(priv->clk);

	if (!clk_rate) {

		dev_err(dev, "input clock rate should not be zero\n");

		return -EINVAL;

	}



	uniphier_fi2c_reset(priv);
@@ -531,7 +535,7 @@ static int uniphier_fi2c_probe(struct platform_device *pdev) 


	ret = uniphier_fi2c_clk_init(dev, priv);

	if (ret)

		return ret;

		goto err;



	ret = devm_request_irq(dev, irq, uniphier_fi2c_interrupt, 0,

			       pdev->name, priv);