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i2c: at91: Handle return value of clk_prepare_enable
clk_prepare_enable() can fail here and we must check its return value. Also, add a missing clk_disable_unprepare(). Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Acked-by: Ludovic Desroches <ludovic.desroches@microchip.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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1 changed files with 6 additions and 2 deletions
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@ -1083,12 +1083,16 @@ static int at91_twi_probe(struct platform_device *pdev)
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dev_err(dev->dev, "no clock defined\n");
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return -ENODEV;
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}
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clk_prepare_enable(dev->clk);
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rc = clk_prepare_enable(dev->clk);
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if (rc)
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return rc;
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if (dev->dev->of_node) {
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rc = at91_twi_configure_dma(dev, phy_addr);
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if (rc == -EPROBE_DEFER)
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if (rc == -EPROBE_DEFER) {
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clk_disable_unprepare(dev->clk);
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return rc;
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}
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}
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if (!of_property_read_u32(pdev->dev.of_node, "atmel,fifo-size",
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