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drm/panfrost: fix GENERIC_ATOMIC64 dependency

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[ Upstream commit 6437a549ae178a3f5a5c03e983f291ebcdc2bbc7 ]

On ARMv5 and earlier, a randconfig build can still run into

WARNING: unmet direct dependencies detected for IOMMU_IO_PGTABLE_LPAE
  Depends on [n]: IOMMU_SUPPORT [=y] && (ARM [=y] || ARM64 || COMPILE_TEST [=y]) && !GENERIC_ATOMIC64 [=y]
  Selected by [y]:
  - DRM_PANFROST [=y] && HAS_IOMEM [=y] && DRM [=y] && (ARM [=y] || ARM64 || COMPILE_TEST [=y] && !GENERIC_ATOMIC64 [=y]) && MMU [=y]

Rework the dependencies to always require a working cmpxchg64.

Fixes: db594ba3fc ("drm/panfrost: depend on !GENERIC_ATOMIC64 when using COMPILE_TEST")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Steven Price <steven.price@arm.com>
Signed-off-by: Steven Price <steven.price@arm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230117164456.1591901-1-arnd@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Arnd Bergmann 2023-01-17 17:44:43 +01:00 committed by Greg Kroah-Hartman
parent 914c58fec1
commit cbed756bd1
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/panfrost/Kconfig
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@ -3,7 +3,8 @@
config DRM_PANFROST
tristate "Panfrost (DRM support for ARM Mali Midgard/Bifrost GPUs)"
depends on DRM
depends on ARM || ARM64 || (COMPILE_TEST && !GENERIC_ATOMIC64)
depends on ARM || ARM64 || COMPILE_TEST
depends on !GENERIC_ATOMIC64 # for IOMMU_IO_PGTABLE_LPAE
depends on MMU
select DRM_SCHED
select IOMMU_SUPPORT