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dmaengine: dw: platform: Mark 'hclk' clock optional
On some platforms the clock can be fixed rate, always running one and there is no need to do anything with it. In order to support those platforms, switch to use optional clock. Fixes:f8d9ddbc28
("dmaengine: dw: platform: Enable iDMA 32-bit on Intel Elkhart Lake") Depends-on:60b8f0ddf1
("clk: Add (devm_)clk_get_optional() functions") Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Link: https://lore.kernel.org/r/20190924085116.83683-1-andriy.shevchenko@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
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@ -66,7 +66,7 @@ static int dw_probe(struct platform_device *pdev)
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data->chip = chip;
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data->chip = chip;
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chip->clk = devm_clk_get(chip->dev, "hclk");
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chip->clk = devm_clk_get_optional(chip->dev, "hclk");
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if (IS_ERR(chip->clk))
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if (IS_ERR(chip->clk))
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return PTR_ERR(chip->clk);
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return PTR_ERR(chip->clk);
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err = clk_prepare_enable(chip->clk);
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err = clk_prepare_enable(chip->clk);
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