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i2c: pca-platform: Use platform_irq_get_optional
The interrupt is not required so use platform_irq_get_optional() to avoid error messages like i2c-pca-platform 22080000.i2c: IRQ index 0 not found Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
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@ -140,7 +140,7 @@ static int i2c_pca_pf_probe(struct platform_device *pdev)
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int ret = 0;
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int irq;
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irq = platform_get_irq(pdev, 0);
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irq = platform_get_irq_optional(pdev, 0);
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/* If irq is 0, we do polling. */
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if (irq < 0)
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irq = 0;
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