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From:   Chandan Rajendra <chandan@linux.ibm.com>
To:     Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Cc:     "Rafael J. Wysocki" <rafael@kernel.org>,
        "moderated list:INTEL ASoC DRIVERS" <alsa-devel@alsa-project.org>,
        Sinan Kaya <Okaya@kernel.org>,
        Jie Yang <yang.jie@linux.intel.com>,
        Takashi Iwai <tiwai@suse.com>,
        open list <linux-kernel@vger.kernel.org>,
        Liam Girdwood <liam.r.girdwood@linux.intel.com>,
        ACPI Devel Mailing List <linux-acpi@vger.kernel.org>,
        Mark Brown <broonie@kernel.org>,
        Linux Next Mailing List <linux-next@vger.kernel.org>,
        "Ted Ts'o" <tytso@google.com>,
        Chandan Rajendra <chandan@linux.vnet.ibm.com>
Subject: Re: [alsa-devel] [PATCH v5 08/11] ASoC: Intel: atom: Make PCI dependency explicit
Date:   Fri, 04 Jan 2019 16:25:37 +0530
Organization: IBM
In-Reply-To: <fd520793-4ec4-2ced-7b00-2cdd3297d74c@linux.intel.com>
References: <20190102181038.4418-1-okaya@kernel.org> <CAJZ5v0j=i_YN7szXLV8cKLp2XmoqUTQR6EJhRJhWFJzenhzM9Q@mail.gmail.com> <fd520793-4ec4-2ced-7b00-2cdd3297d74c@linux.intel.com>
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On Thursday, January 3, 2019 9:58:28 PM IST Pierre-Louis Bossart wrote:
> 
> >>> arch/ia64/Kconfig:126:error: recursive dependency detected!
> >>> arch/ia64/Kconfig:126:    choice <choice> contains symbol IA64_HP_SIM
> >>> arch/ia64/Kconfig:200:    symbol IA64_HP_SIM is part of choice PM
> >>> kernel/power/Kconfig:144:    symbol PM is selected by PM_SLEEP
> >>> kernel/power/Kconfig:104:    symbol PM_SLEEP depends on HIBERNATE_CALLBACKS
> >>> kernel/power/Kconfig:31:    symbol HIBERNATE_CALLBACKS is selected by
> >>> HIBERNATION
> >>> kernel/power/Kconfig:34:    symbol HIBERNATION depends on SWAP
> >>> init/Kconfig:250:    symbol SWAP depends on BLOCK
> >>> block/Kconfig:5:    symbol BLOCK is selected by UBIFS_FS
> >>> fs/ubifs/Kconfig:1:    symbol UBIFS_FS depends on MISC_FILESYSTEMS
> >>> fs/Kconfig:220:    symbol MISC_FILESYSTEMS is selected by ACPI_APEI
> >>> drivers/acpi/apei/Kconfig:8:    symbol ACPI_APEI depends on ACPI
> >>> drivers/acpi/Kconfig:9:    symbol ACPI depends on ARCH_SUPPORTS_ACPI
> >>> <<<< LOOK HERE
> >>> drivers/acpi/Kconfig:6:    symbol ARCH_SUPPORTS_ACPI is selected by
> >>> IA64_HP_SIM
> >>> arch/ia64/Kconfig:200:    symbol IA64_HP_SIM is part of choice <choice>
> >>>
> >>> At any rate, a 3 mn git bisect tells me the circular dependency is
> >>> exposed by this change:
> >>>
> >>> f3fd6cd74fedf99b6060f75df00943fda13b65f2 is the first bad commit
> >>> commit f3fd6cd74fedf99b6060f75df00943fda13b65f2
> >>> Author: Chandan Rajendra <chandan@linux.vnet.ibm.com>
> >>> Date:   Sat Dec 8 12:21:38 2018 +0530
> >>>
> >>>       fscrypt: remove filesystem specific build config option
> >>>
> >>>       In order to have a common code base for fscrypt "post read" processing
> >>>       for all filesystems which support encryption, this commit removes
> >>>       filesystem specific build config option (e.g.
> >>> CONFIG_EXT4_FS_ENCRYPTION)
> >>>       and replaces it with a build option (i.e. CONFIG_FS_ENCRYPTION) whose
> >>>       value affects all the filesystems making use of fscrypt.
> >>>
> >>>       Signed-off-by: Chandan Rajendra <chandan@linux.vnet.ibm.com>
> >>>       Signed-off-by: Theodore Ts'o <tytso@mit.edu>
> >>>
> >> FWIW, The patch at https://patchwork.kernel.org/patch/10725883/ fixes this
> >> problem by removing "select BLOCK if FS_ENCRYPTION" from fs/ubifs/Kconfig.
> > OK
> >
> > Pierre-Louis, can you check if this patch makes the issue go away for
> > you, please?
> 
> Wondering if Chandan provided the right pointer, I wasn't able to apply 
> this patch, but commenting out "select BLOCK if FS_ENCRYPTION" in 
> fs/ubifs/Kconfig makes the circular dependency go away. All good for me.
> 

V4 version of the patchset (which is part of linux-next) had introduced the
"select BLOCK if FS_ENCRYPTION". The V5 patchset omits that line. Hence the
patch did not apply cleanly. However just commenting out that line was the
right thing to do.

-- 
chandan