From mboxrd@z Thu Jan  1 00:00:00 1970
From: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Subject: Re: [PATCH 3/4] soundwire: bus: check if pm runtime is
 enabled before calling
Date: Fri, 29 Mar 2019 10:02:47 +0000
Message-ID: <80c6fb6d-a3b8-3272-e880-94d971623a06@linaro.org>
References: <20190328134134.22479-1-srinivas.kandagatla@linaro.org>
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 <20190329055828.GK5348@vkoul-mobl>
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To: Vinod Koul <vkoul@kernel.org>
Cc: sanyog.r.kale@intel.com, Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>, alsa-devel@alsa-project.org, Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
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On 29/03/2019 05:58, Vinod Koul wrote:
>> There are lots of users in kernel with such sequences, ex:
>>
>> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/iommu/arm-smmu.c?h=v5.1-rc2#n279
> Sorry not a fan of this:)  I think PM core should do this :D
> 
Yes, I would prefer that too, There might be a reason why its not done 
in the pm core, I will catchup with Ulf next week and see if we can add 
checks to return -ENOSUPPORT  or something more sensible error code to 
users.


Thanks,
srini
> I guess you are trying to solve the case where PM can be disabled for a
> device and pm_runtime_get_sync() returns error right?
> 
> That would be quite a common sequence in most frameworks..
> 
> Thanks
> 
>