drm/amdgpu: temporarily disable broken Clang builds due to blown stack-frame
commit6f6cb17143
upstream. Patch series "Fix a bunch of allmodconfig errors", v2. Sinceb339ec9c22
("kbuild: Only default to -Werror if COMPILE_TEST") WERROR now defaults to COMPILE_TEST meaning that it's enabled for allmodconfig builds. This leads to some interesting build failures when using Clang, each resolved in this set. With this set applied, I am able to obtain a successful allmodconfig Arm build. This patch (of 2): calculate_bandwidth() is presently broken on all !(X86_64 || SPARC64 || ARM64) architectures built with Clang (all released versions), whereby the stack frame gets blown up to well over 5k. This would cause an immediate kernel panic on most architectures. We'll revert this when the following bug report has been resolved: https://github.com/llvm/llvm-project/issues/41896. Link: https://lkml.kernel.org/r/20221125120750.3537134-1-lee@kernel.org Link: https://lkml.kernel.org/r/20221125120750.3537134-2-lee@kernel.org Signed-off-by: Lee Jones <lee@kernel.org> Suggested-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Arnd Bergmann <arnd@arndb.de> Cc: Alex Deucher <alexander.deucher@amd.com> Cc: "Christian König" <christian.koenig@amd.com> Cc: Daniel Vetter <daniel@ffwll.ch> Cc: David Airlie <airlied@gmail.com> Cc: Harry Wentland <harry.wentland@amd.com> Cc: Lee Jones <lee@kernel.org> Cc: Leo Li <sunpeng.li@amd.com> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Maxime Ripard <mripard@kernel.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: "Pan, Xinhui" <Xinhui.Pan@amd.com> Cc: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com> Cc: Thomas Zimmermann <tzimmermann@suse.de> Cc: Tom Rix <trix@redhat.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -5,6 +5,7 @@ menu "Display Engine Configuration"
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config DRM_AMD_DC
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bool "AMD DC - Enable new display engine"
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default y
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depends on BROKEN || !CC_IS_CLANG || X86_64 || SPARC64 || ARM64
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select SND_HDA_COMPONENT if SND_HDA_CORE
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select DRM_AMD_DC_DCN if (X86 || PPC64) && !(KCOV_INSTRUMENT_ALL && KCOV_ENABLE_COMPARISONS)
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help
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@ -12,6 +13,12 @@ config DRM_AMD_DC
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support for AMDGPU. This adds required support for Vega and
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Raven ASICs.
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calculate_bandwidth() is presently broken on all !(X86_64 || SPARC64 || ARM64)
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architectures built with Clang (all released versions), whereby the stack
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frame gets blown up to well over 5k. This would cause an immediate kernel
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panic on most architectures. We'll revert this when the following bug report
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has been resolved: https://github.com/llvm/llvm-project/issues/41896.
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config DRM_AMD_DC_DCN
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def_bool n
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help
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