Re: [PATCH 01/35] mfd: ab8500-gpadc: Implemented suspend/resume

From: Mark Brown
Date: Wed Feb 20 2013 - 08:19:19 EST


On Fri, Feb 15, 2013 at 12:56:32PM +0000, Lee Jones wrote:

> +static int ab8500_gpadc_suspend(struct device *dev)
> +{
> + struct ab8500_gpadc *gpadc = dev_get_drvdata(dev);
> +
> + mutex_lock(&gpadc->ab8500_gpadc_lock);
> +
> + pm_runtime_get_sync(dev);
> +
> + regulator_disable(gpadc->regu);
> + return 0;
> +}

This doesn't look especially sane... You're doing a runtime get, taking
the lock without releasing it and disabling the regulator. This is
*very* odd, both the changelog and the code need to explain what's going
on and why it's safe in a lot more detail here.
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