linux-kernel - Re: [PATCH 0/4] ASoC: qcom: fixes for Qualcomm codecs and q6apm

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Date:   Thu, 27 Jan 2022 10:20:09 +0000
From:   Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
To:     Mark Brown <broonie@...nel.org>
Cc:     lgirdwood@...il.com, perex@...ex.cz, tiwai@...e.com,
        pierre-louis.bossart@...ux.intel.com, alsa-devel@...a-project.org,
        linux-kernel@...r.kernel.org, quic_srivasam@...cinc.com
Subject: Re: [PATCH 0/4] ASoC: qcom: fixes for Qualcomm codecs and q6apm

Thanks Mark,

On 26/01/2022 13:29, Mark Brown wrote:
> On Wed, Jan 26, 2022 at 11:35:45AM +0000, Srinivas Kandagatla wrote:
> 
>> Some recent testing found few issues with wcd938x and lpass-tx codec drivers.
>> WCD938x was accessing array out of boundaries resulting in corruption and
>> system crashes along with not handling kcontrol put return values correctly
>> and rx-macro had incorrect sidetone registers offsets. One final fix in q6apm
>> to add a check if graph started before stopping it.
> 
> You probably want to run the new mixer kselftest on these devices,

Yes, this is really good test indeed already found few issues with 
existing mixers. I will test this on all the Qualcomm boards and get 
back with some fixes.

I also made some improvements to the mixer test to not keep writing new 
values to controls that have returned -EPERM in cases like where put 
callback is NULL, In my case I have a Impedance value read only control 
whose value range is MAX_INT.

--srini

> including with the patch I posted the other day testing out of bounds
> writes.  It doesn't cover change notifications yet, you might want to
> set up some automation for that for whenever someone gets round to
> adding coverage.