[PATCH 2/2] mmc: sdhci-s3c: Enable runtime power management | linux-arm-kernel

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Acked-by: Jaehoon Chung <jh80.chung@samsung.com>

On 03/05/2012 08:52 PM, Mark Brown wrote:

On Mon, Mar 05, 2012 at 07:48:42PM +0900, Jaehoon Chung wrote:
On 03/03/2012 09:46 AM, Mark Brown wrote:

+	pm_runtime_set_autosuspend_delay(&pdev->dev, 50);

Could you explain why use 50ms? 
It's essentially a random number, some other devices use the same one.
We're just trying to avoid suspending between back to back requests.

+	pm_runtime_use_autosuspend(&pdev->dev);
+	pm_suspend_ignore_children(&pdev->dev, 1);

Is there reason that ignore_children use to set the true?
So that we can suspend the host without having to have the MMC card
suspended (the host suspend is not visible to the card).

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