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Date: Tue, 26 Apr 2016 08:08:16 -0400
From: okaya@codeaurora.org
To: Vinod Koul <vinod.koul@intel.com>
Cc: dmaengine@vger.kernel.org, timur@codeaurora.org,
        devicetree@vger.kernel.org, cov@codeaurora.org, jcm@redhat.com,
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        Dan Williams <dan.j.williams@intel.com>,
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        linux-kernel@vger.kernel.org
Subject: Re: [PATCH V17 2/3] dmaengine: qcom_hidma: add debugfs hooks
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On 2016-04-25 23:30, Vinod Koul wrote:
> On Mon, Apr 11, 2016 at 10:21:12AM -0400, Sinan Kaya wrote:
> 
>> +static int hidma_chan_stats(struct seq_file *s, void *unused)
>> +{
>> +	struct hidma_chan *mchan = s->private;
>> +	struct hidma_desc *mdesc;
>> +	struct hidma_dev *dmadev = mchan->dmadev;
>> +
>> +	pm_runtime_get_sync(dmadev->ddev.dev);
> 
> debug shouldn't power up device, why do you want to do that


Clocks are turned off while the hw is idle. I can’t reach hw registers 
without restoring power.