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Date:   Sun, 4 Sep 2022 09:47:54 +0200
From:   Greg KH <gregkh@linuxfoundation.org>
To:     Kumaravel.Thiagarajan@microchip.com
Cc:     lkp@intel.com, paul@pgazz.com, fazilyildiran@gmail.com,
        kbuild-all@lists.01.org, linux-kernel@vger.kernel.org
Subject: Re: [char-misc:char-misc-testing 20/24] kismet: WARNING: unmet
 direct dependencies detected for GPIOLIB_IRQCHIP when selected by
 GP_PCI1XXXX
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On Sat, Sep 03, 2022 at 10:21:31AM +0000, Kumaravel.Thiagarajan@microchip.com wrote:
> > -----Original Message-----
> > From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> > Sent: Saturday, September 3, 2022 12:40 PM
> > To: kernel test robot <lkp@intel.com>; Kumaravel Thiagarajan - I21417
> > <Kumaravel.Thiagarajan@microchip.com>; Paul Gazzillo <paul@pgazz.com>;
> > Necip Fazil Yildiran <fazilyildiran@gmail.com>; kbuild-all@lists.01.org; linux-
> > kernel@vger.kernel.org
> > Subject: Re: [char-misc:char-misc-testing 20/24] kismet: WARNING: unmet
> > direct dependencies detected for GPIOLIB_IRQCHIP when selected by
> > GP_PCI1XXXX
> > 
> > EXTERNAL EMAIL: Do not click links or open attachments unless you know the
> > content is safe
> > 
> > On Sat, Sep 03, 2022 at 02:12:13PM +0800, kernel test robot wrote:
> > > tree:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-
> > misc.git char-misc-testing
> > > head:   4ec7ac90ff399b7d9af81cc8afd430a22786c61b
> > > commit: 393fc2f5948fd340d016a9557eea6e1ac2f6c60c [20/24] misc:
> > microchip: pci1xxxx: load auxiliary bus driver for the PIO function in the multi-
> > function endpoint of pci1xxxx device.
> > > config: x86_64-kismet-CONFIG_GPIOLIB_IRQCHIP-CONFIG_GP_PCI1XXXX-
> > 0-0
> > > (https://download.01.org/0day-
> > ci/archive/20220903/202209031414.Y8YCEjm
> > > I-lkp@intel.com/config)
> > > reproduce:
> > >         # https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-
> > misc.git/commit/?id=393fc2f5948fd340d016a9557eea6e1ac2f6c60c
> > >         git remote add char-misc
> > https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git
> > >         git fetch --no-tags char-misc char-misc-testing
> > >         git checkout 393fc2f5948fd340d016a9557eea6e1ac2f6c60c
> > >         # 1. reproduce by kismet
> > >            # install kmax per
> > https://github.com/paulgazz/kmax/blob/master/README.md
> > >            kismet --linux-ksrc=linux --selectees CONFIG_GPIOLIB_IRQCHIP --
> > selectors CONFIG_GP_PCI1XXXX -a=x86_64
> > >         # 2. reproduce by make
> > >            # save the config file to linux source tree
> > >            cd linux
> > >            make ARCH=x86_64 olddefconfig
> > >
> > > If you fix the issue, kindly add following tag where applicable
> > > Reported-by: kernel test robot <lkp@intel.com>
> > >
> > > kismet warnings: (new ones prefixed by >>)
> > > >> kismet: WARNING: unmet direct dependencies detected for
> > > >> GPIOLIB_IRQCHIP when selected by GP_PCI1XXXX
> > >
> > >    WARNING: unmet direct dependencies detected for GPIOLIB_IRQCHIP
> > >      Depends on [n]: GPIOLIB [=n]
> > >      Selected by [y]:
> > >      - GP_PCI1XXXX [=y] && PCI [=y]
> > 
> > Ick, I missed this before in review.  Kumaravel, any chance you can make this
> > a "depends" issue instead of a select one?
> 
> Greg, can I select both GPIOLIB & GPIOLIB_IRQCHIP like below?
> 
> config GP_PCI1XXXX
>        tristate "Microchip PCI1XXXX PCIe to GPIO Expander + OTP/EEPROM manager"
>        depends on PCI	
>        select GPIOLIB
>        select GPIOLIB_IRQCHIP
>        help
>          PCI1XXXX is a PCIe GEN 3 switch with one of the endpoints having
>          multiple functions and one of the functions is a GPIO controller
>          which also has registers to interface with the OTP and EEPROM.
>          Select yes, no or module here to include or exclude the driver
>          for the GPIO function.
> 
> or replace "select GPIOLIB_IRQCHIP" with "depends on GPIOLIB_IRQCHIP" like you mentioned?
> 
> Please advise.

I do not know, try them both out and see what happens.

> I am not able to experiment with these options as my Linux development machine is not accessible
> due to some maintenance activities in office during the weekend.

No worries, doing it this week is fine.

thanks,

greg k-h