linux-kernel - Re: [PATCH v3 09/11] mmc: add PCI dependency into IOSF

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Message-ID: <CAK9iUCOce2x9NPGs9aryU8eqdWroPdjM0SP6LohhDjsCmdERAA@mail.gmail.com>
Date:   Wed, 2 Jan 2019 14:15:29 +0000
From:   Sinan Kaya <Okaya@...nel.org>
To:     Adrian Hunter <adrian.hunter@...el.com>
Cc:     "Rafael J. Wysocki" <rafael@...nel.org>,
        Linux-Next Mailing List <linux-next@...r.kernel.org>,
        ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Shawn Lin <shawn.lin@...k-chips.com>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Geert Uytterhoeven <geert@...ux-m68k.org>, faiz_abbas@...com,
        chunyan.zhang@...soc.com, Jisheng.Zhang@...aptics.com,
        ludovic.barre@...com, Arnd Bergmann <arnd@...db.de>,
        alex.smith@...tec.com, chris.brandt@...esas.com,
        linux-mmc <linux-mmc@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 09/11] mmc: add PCI dependency into IOSF_MBI

On Wed, Jan 2, 2019 at 2:04 PM Adrian Hunter <adrian.hunter@...el.com> wrote:
>
> On 31/12/18 11:40 AM, Rafael J. Wysocki wrote:
> > On Sun, Dec 30, 2018 at 7:57 PM Sinan Kaya <Okaya@...nel.org> wrote:
> >>
> >> On Wed, Dec 26, 2018 at 12:41 PM Rafael J. Wysocki <rafael@...nel.org> wrote:
> >>>
> >>> On Mon, Dec 24, 2018 at 12:26 AM Sinan Kaya <okaya@...nel.org> wrote:
> >>>>
> >>>> Select IOSF_MBI only when PCI is set.
> >>>>
> >>>> Signed-off-by: Sinan Kaya <okaya@...nel.org>
> >>>> ---
> >>>>  drivers/mmc/host/Kconfig | 2 +-
> >>>>  1 file changed, 1 insertion(+), 1 deletion(-)
> >>>>
> >>>> diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig
> >>>> index e26b8145efb3..4c5f037b246d 100644
> >>>> --- a/drivers/mmc/host/Kconfig
> >>>> +++ b/drivers/mmc/host/Kconfig
> >>>> @@ -117,7 +117,7 @@ config MMC_RICOH_MMC
> >>>>  config MMC_SDHCI_ACPI
> >>>>         tristate "SDHCI support for ACPI enumerated SDHCI controllers"
> >>>>         depends on MMC_SDHCI && ACPI
> >>>
> >>> It should depend on PCI as well, shouldn't it?
> >>>
> >>
> >> I don't think so. The PCI dependency is at IOSF_MBI code so code
> >> should select IOSF_MBI only when x86 and pci is defined as below.
> >>
> >> This driver does not depend on PCI.
> >
> > Are you sure?
> >
> > Do you know any systems in which to use it without PCI?
> >
>
> Qualcomm use it and I don't know if those systems have PCI.
> AMD use it but probably also have PCI.  And yes Intel systems (just BYT and
> CHT IIRC) that use this driver will always have PCI.

QCOM doesn't use PCI for SDHC.