linux-kernel - Re: [alsa-devel] [PATCH] ASoc: fix sound/soc/intel/skylake/slk-ssp-clk.c build error on IA64

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Date:   Fri, 24 May 2019 08:03:09 -0500
From:   Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
To:     Randy Dunlap <rdunlap@...radead.org>,
        LKML <linux-kernel@...r.kernel.org>,
        moderated for non-subscribers <alsa-devel@...a-project.org>
Cc:     Liam Girdwood <liam.r.girdwood@...ux.intel.com>,
        Mark Brown <broonie@...nel.org>,
        Jie Yang <yang.jie@...ux.intel.com>,
        kbuild test robot <lkp@...el.com>
Subject: Re: [alsa-devel] [PATCH] ASoc: fix
 sound/soc/intel/skylake/slk-ssp-clk.c build error on IA64



On 5/23/19 9:59 PM, Randy Dunlap wrote:
> On 5/23/19 4:28 AM, Pierre-Louis Bossart wrote:
>>
>>
>> On 5/22/19 10:58 PM, Randy Dunlap wrote:
>>> From: Randy Dunlap <rdunlap@...radead.org>
>>>
>>> skl-ssp-clk.c does not build on IA64 because the driver
>>> uses the common clock interface, so make the driver depend
>>> on COMMON_CLK.
>>>
>>> Fixes this build error:
>>> ../sound/soc/intel/skylake/skl-ssp-clk.c:26:16: error: field 'hw' has incomplete type
>>>     struct clk_hw hw;
>>>                   ^~
>>>
>>> Reported-by: kbuild test robot <lkp@...el.com>
>>> Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
>>> Cc: Mark Brown <broonie@...nel.org>
>>> Cc: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
>>> Cc: Liam Girdwood <liam.r.girdwood@...ux.intel.com>
>>> Cc: Jie Yang <yang.jie@...ux.intel.com>
>>> Cc: alsa-devel@...a-project.org
>>> ---
>>>    sound/soc/intel/Kconfig        |    3 ++-
>>>    sound/soc/intel/boards/Kconfig |    2 +-
>>>    2 files changed, 3 insertions(+), 2 deletions(-)
>>>
>>> --- lnx-52-rc1.orig/sound/soc/intel/Kconfig
>>> +++ lnx-52-rc1/sound/soc/intel/Kconfig
>>> @@ -104,7 +104,7 @@ config SND_SST_ATOM_HIFI2_PLATFORM_ACPI
>>>    config SND_SOC_INTEL_SKYLAKE
>>>        tristate "All Skylake/SST Platforms"
>>>        depends on PCI && ACPI
>>> -    select SND_SOC_INTEL_SKL
>>> +    select SND_SOC_INTEL_SKL if COMMON_CLK
>>
>> Is this really necessary? The COMMON_CLK is only needed for the SND_SOC_INTEL_SKYLAKE_SSP_CLK option, isn't it?
> 
> It prevents this Kconfig warning:
> 
> WARNING: unmet direct dependencies detected for SND_SOC_INTEL_SKL
>    Depends on [n]: SOUND [=y] && !UML && SND [=y] && SND_SOC [=y] && SND_SOC_INTEL_SST_TOPLEVEL [=y] && PCI [=y] && ACPI [=y] && COMMON_CLK [=n]
>    Selected by [y]:
>    - SND_SOC_INTEL_SKYLAKE [=y] && SOUND [=y] && !UML && SND [=y] && SND_SOC [=y] && SND_SOC_INTEL_SST_TOPLEVEL [=y] && PCI [=y] && ACPI [=y]

Humm, ok. Can you share the config? I'd like to look into this. There 
may be a need for this COMMON_CLK, but applying it here would not be 
fully correct: you can unselect SND_SOC_INTEL_SKYLAKE and only select 
SND_SOC_INTEL_SKL and still have the same problem.

> 
>>>        select SND_SOC_INTEL_APL
>>>        select SND_SOC_INTEL_KBL
>>>        select SND_SOC_INTEL_GLK
>>> @@ -120,6 +120,7 @@ config SND_SOC_INTEL_SKYLAKE
>>>    config SND_SOC_INTEL_SKL
>>>        tristate "Skylake Platforms"
>>>        depends on PCI && ACPI
>>> +    depends on COMMON_CLK
>>>        select SND_SOC_INTEL_SKYLAKE_FAMILY
>>>        help
>>>          If you have a Intel Skylake platform with the DSP enabled
>>> --- lnx-52-rc1.orig/sound/soc/intel/boards/Kconfig
>>> +++ lnx-52-rc1/sound/soc/intel/boards/Kconfig
>>> @@ -286,7 +286,7 @@ config SND_SOC_INTEL_KBL_RT5663_MAX98927
>>>        select SND_SOC_MAX98927
>>>        select SND_SOC_DMIC
>>>        select SND_SOC_HDAC_HDMI
>>> -    select SND_SOC_INTEL_SKYLAKE_SSP_CLK
>>> +    select SND_SOC_INTEL_SKYLAKE_SSP_CLK if COMMON_CLK
>>
>> and here I would make it a depend. I guess your solution solves the compilation but doesn't fully represent the fact that this machine driver is not functional without COMMON_CLK+SKYLAKE_SSP_CLK.
> 
> Not functional on ia64 anyway.  :)

Yeah, I am fine with this.