spi: stm32: use NULL pointer instead of plain integer
Patch fixes sparse warning: Using plain integer as NULL pointer. Replaces second argument of function devm_clk_get from 0 to NULL. Signed-off-by: Cezary Gapinski <cezary.gapinski@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
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@ -1100,7 +1100,7 @@ static int stm32_spi_probe(struct platform_device *pdev)
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goto err_master_put;
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}
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spi->clk = devm_clk_get(&pdev->dev, 0);
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spi->clk = devm_clk_get(&pdev->dev, NULL);
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if (IS_ERR(spi->clk)) {
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ret = PTR_ERR(spi->clk);
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dev_err(&pdev->dev, "clk get failed: %d\n", ret);
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