On Tue, May 18, 2021 at 09:19:22PM +0000, John Stultz wrote:

Allow the qcom_scm driver to be loadable as a permenent module.

This still uses the "depends on QCOM_SCM || !QCOM_SCM" bit to
ensure that drivers that call into the qcom_scm driver are
also built as modules. While not ideal in some cases its the
only safe way I can find to avoid build errors without having
those drivers select QCOM_SCM and have to force it on (as
QCOM_SCM=n can be valid for those drivers).

Reviving this now that Saravana's fw_devlink defaults to on,
which should avoid loading troubles seen before.

Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Andy Gross <agross@kernel.org>
Cc: Bjorn Andersson <redacted>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Thomas Gleixner <redacted>
Cc: Jason Cooper <redacted>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Linus Walleij <redacted>
Cc: Vinod Koul <vkoul@kernel.org>
Cc: Kalle Valo <redacted>
Cc: Maulik Shah <redacted>
Cc: Lina Iyer <redacted>
Cc: Saravana Kannan <redacted>
Cc: Todd Kjos <redacted>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: linux-arm-msm@vger.kernel.org
Cc: iommu@lists.linux-foundation.org
Cc: linux-gpio@vger.kernel.org
Acked-by: Kalle Valo <redacted>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Bjorn Andersson <redacted>
Signed-off-by: John Stultz <redacted>
---
v3:
* Fix __arm_smccc_smc build issue reported by
  kernel test robot [off-list ref]
v4:
* Add "depends on QCOM_SCM || !QCOM_SCM" bit to ath10k
  config that requires it.
v5:
* Fix QCOM_QCM typo in Kconfig, it should be QCOM_SCM
---
 drivers/firmware/Kconfig                | 2 +-
 drivers/firmware/Makefile               | 3 ++-
 drivers/firmware/qcom_scm.c             | 4 ++++
 drivers/iommu/Kconfig                   | 2 ++
 drivers/net/wireless/ath/ath10k/Kconfig | 1 +
 5 files changed, 10 insertions(+), 2 deletions(-)

[...]

For this part:

Acked-by: Will Deacon <will@kernel.org>

Will