From: Arnd Bergmann <arnd@kernel.org>
To: Will Deacon <will@kernel.org>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>,
Arnd Bergmann <arnd@arndb.de>, Rob Clark <robdclark@gmail.com>,
Sean Paul <sean@poorly.run>, David Airlie <airlied@linux.ie>,
Daniel Vetter <daniel@ffwll.ch>, Joerg Roedel <joro@8bytes.org>,
Mauro Carvalho Chehab <mchehab@kernel.org>,
Ulf Hansson <ulf.hansson@linaro.org>,
Alex Elder <elder@kernel.org>,
"David S. Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>,
Kalle Valo <kvalo@codeaurora.org>, Andy Gross <agross@kernel.org>,
Linus Walleij <linus.walleij@linaro.org>,
Maxime Ripard <mripard@kernel.org>, Chen-Yu Tsai <wens@csie.org>,
Jernej Skrabec <jernej.skrabec@gmail.com>,
Mark Rutland <mark.rutland@arm.com>,
Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
Sudeep Holla <sudeep.holla@arm.com>,
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Subject: Re: [PATCH] [RFC] qcom_scm: hide Kconfig symbol
Date: Wed, 29 Sep 2021 12:04:55 +0200 [thread overview]
Message-ID: <CAK8P3a2QnJkYCoEWhziYYXQusb-25_wUhA5ZTGtBsyfFx3NWzQ@mail.gmail.com> (raw)
In-Reply-To: <20210929095107.GA21057@willie-the-truck>
On Wed, Sep 29, 2021 at 11:51 AM Will Deacon <will@kernel.org> wrote:
> On Mon, Sep 27, 2021 at 05:22:13PM +0200, Arnd Bergmann wrote:
> >
> > diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig
> > index 124c41adeca1..989c83acbfee 100644
> > --- a/drivers/iommu/Kconfig
> > +++ b/drivers/iommu/Kconfig
> > @@ -308,7 +308,7 @@ config APPLE_DART
> > config ARM_SMMU
> > tristate "ARM Ltd. System MMU (SMMU) Support"
> > depends on ARM64 || ARM || (COMPILE_TEST && !GENERIC_ATOMIC64)
> > - depends on QCOM_SCM || !QCOM_SCM #if QCOM_SCM=m this can't be =y
> > + select QCOM_SCM
> > select IOMMU_API
> > select IOMMU_IO_PGTABLE_LPAE
> > select ARM_DMA_USE_IOMMU if ARM
>
> I don't want to get in the way of this patch because I'm also tired of the
> randconfig failures caused by QCOM_SCM. However, ARM_SMMU is applicable to
> a wide variety of (non-qcom) SoCs and so it seems a shame to require the
> QCOM_SCM code to be included for all of those when it's not strictly needed
> at all.
Good point, I agree that needs to be fixed. I think this additional
change should do the trick:
--- a/drivers/iommu/Kconfig
+++ b/drivers/iommu/Kconfig
@@ -308,7 +308,6 @@ config APPLE_DART
config ARM_SMMU
tristate "ARM Ltd. System MMU (SMMU) Support"
depends on ARM64 || ARM || (COMPILE_TEST && !GENERIC_ATOMIC64)
- select QCOM_SCM
select IOMMU_API
select IOMMU_IO_PGTABLE_LPAE
select ARM_DMA_USE_IOMMU if ARM
@@ -438,7 +437,7 @@ config QCOM_IOMMU
# Note: iommu drivers cannot (yet?) be built as modules
bool "Qualcomm IOMMU Support"
depends on ARCH_QCOM || (COMPILE_TEST && !GENERIC_ATOMIC64)
- depends on QCOM_SCM=y
+ select QCOM_SCM
select IOMMU_API
select IOMMU_IO_PGTABLE_LPAE
select ARM_DMA_USE_IOMMU
I'll see if that causes any problems for the randconfig builds.
Arnd
next prev parent reply other threads:[~2021-09-29 10:05 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-27 15:22 [PATCH] [RFC] qcom_scm: hide Kconfig symbol Arnd Bergmann
2021-09-27 19:52 ` Bjorn Andersson
2021-09-27 20:15 ` Arnd Bergmann
2021-09-27 20:42 ` Bjorn Andersson
2021-09-27 20:47 ` Arnd Bergmann
2021-09-28 7:03 ` Kalle Valo
2021-09-28 7:08 ` Arnd Bergmann
2021-09-29 9:51 ` Will Deacon
2021-09-29 10:04 ` Arnd Bergmann [this message]
2021-09-29 14:46 ` Bjorn Andersson
2021-09-29 18:30 ` Arnd Bergmann
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