| From f27c22736d133baff0ab3fdc7b015d998267d817 Mon Sep 17 00:00:00 2001 |
| From: Andy Shevchenko <andriy.shevchenko@linux.intel.com> |
| Date: Tue, 24 Sep 2019 11:51:16 +0300 |
| Subject: dmaengine: dw: platform: Mark 'hclk' clock optional |
| |
| From: Andy Shevchenko <andriy.shevchenko@linux.intel.com> |
| |
| commit f27c22736d133baff0ab3fdc7b015d998267d817 upstream. |
| |
| 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: f8d9ddbc2851 ("dmaengine: dw: platform: Enable iDMA 32-bit on Intel Elkhart Lake") |
| Depends-on: 60b8f0ddf1a9 ("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> |
| Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| |
| --- |
| drivers/dma/dw/platform.c | 2 +- |
| 1 file changed, 1 insertion(+), 1 deletion(-) |
| |
| --- a/drivers/dma/dw/platform.c |
| +++ b/drivers/dma/dw/platform.c |
| @@ -66,7 +66,7 @@ static int dw_probe(struct platform_devi |
| |
| data->chip = chip; |
| |
| - chip->clk = devm_clk_get(chip->dev, "hclk"); |
| + chip->clk = devm_clk_get_optional(chip->dev, "hclk"); |
| if (IS_ERR(chip->clk)) |
| return PTR_ERR(chip->clk); |
| err = clk_prepare_enable(chip->clk); |
