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dmaengine: pl330: Drop boilerplate code for suspend/resume

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Let's drop the boilerplate code in the system suspend/resume callbacks and
convert to use pm_runtime_force_suspend|resume(). This change also has a
nice side effect, as pm_runtime_force_resume() may decide to leave the
device in low power state, when that is feasible, thus avoiding to waste
both time and energy during system resume.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Link: https://lore.kernel.org/r/20191205143746.24873-2-ulf.hansson@linaro.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Ulf Hansson 2019-12-05 15:37:45 +01:00 committed by Vinod Koul
parent c64738d681
commit a39cddc9e3
1 changed files with 2 additions and 10 deletions
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12
drivers/dma/pl330.c
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@ -2961,12 +2961,7 @@ static int __maybe_unused pl330_suspend(struct device *dev)
{
struct amba_device *pcdev = to_amba_device(dev);
pm_runtime_disable(dev);
if (!pm_runtime_status_suspended(dev)) {
/* amba did not disable the clock */
amba_pclk_disable(pcdev);
}
pm_runtime_force_suspend(dev);
amba_pclk_unprepare(pcdev);
return 0;
@ -2981,10 +2976,7 @@ static int __maybe_unused pl330_resume(struct device *dev)
if (ret)
return ret;
if (!pm_runtime_status_suspended(dev))
ret = amba_pclk_enable(pcdev);
pm_runtime_enable(dev);
pm_runtime_force_resume(dev);
return ret;
}