Hui Wang at
Wed Dec 4 15:41:11 UTC 2019

On 2019/12/4 下午11:28, Stefan Bader wrote:
> On 04.12.19 15:17, Hui Wang wrote:
>> On 2019/12/4 下午6:39, Stefan Bader wrote:
>>> On 02.12.19 09:06, Khaled Elmously wrote:
>>>> The bug is not targeted to Eoan - and I'm unable to target it myself for some
>>>> reason.
>>> Also note, that by not testing this change it caused build failures because:
>>> 1) The config get adjusted to no longer build snd-sof-intel-bdw, including
>>>      this change in a config update patch also clarifies that this is what is
>>>      meant to happen. This part does not cause the build to fail but it will
>>>      delay creating a kernel for the cycle. Here it is a problem because without
>>>      going into details it is unclear which of the two drivers should be kept.
>>> 2) The module _must_ be removed from the ABI modules list, otherwise the
>>>      build will fail (this change can go with the config update). The annoying
>>>      part here is that this happens rather late in the build process, so one
>>>      can loose a lot of time.
>> Oh, I never thought that. If it couldn't be merged into this cycle, I will
>> prepare the abi patch for the next cycle.
>> I always build the kernel with "skipabi=true skipconfig=true skipmodule=true
>> skipretpoline=true", so this problem didn't expose.
> There I would strongly suggest using cranky-test-build or at least never use
> those options to check for being ready for submitting. I don't think it saves
> you time but instead hides all problems which a change might introduce.

OK, got it. thx.

>> Thanks,
>> Hui.
>>> For now I added this change but it could happen that patches causing build
>>> failures just get unapplied and will miss a cycle.
>>> -Stefan
>>>> On 2019-11-20 11:04:22 , Hui Wang wrote:
>>>>> BugLink:
>>>>> [Impact]
>>>>> With the current default kernel config, the SND_SOC_SOF_BROADWELL_SUPPORT
>>>>> is set to Y, then it will make the legacy intel soc driver fail, and
>>>>> moreover the current sof driver can't support broadwell well, as a
>>>>> result, many broadwell computers with I2S codec can't support sound anymore.
>>>>> [Fix]
>>>>> Intel submitted a patch, it will make those two kconfig options exclusive,
>>>>> and the legacy soc's option has higher priority, if both of them are
>>>>> enabled, sof's option will be disabled.
>>>>> [Test Case]
>>>>> Build the kernel and check the debian/build/$buidling_dir/.config,  the
>>>>> [Regression Risk]
>>>>> Low, so far, the sof driver can't support broadwell machine well, so
>>>>> there is no machine use this driver yet.
>>>>> Pierre-Louis Bossart (1):
>>>>>     UBUNTU: SAUCE: ASoC: SOF: Intel: Broadwell: clarify mutual exclusion
>>>>>       with legacy driver
>>>>>    sound/soc/intel/Kconfig     |  3 +++
>>>>>    sound/soc/sof/intel/Kconfig | 10 +++++++++-
>>>>>    2 files changed, 12 insertions(+), 1 deletion(-)
>>>>> -- 
>>>>> 2.17.1
>>>>> -- 
>>>>> kernel-team mailing list
>>>>> kernel-team at

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