powerpc/64e: Fix amdgpu build on Book3E w/o AltiVec

mpe · mpe · commit 2153fc9623e5 · 2022-10-31T17:39:44.000+11:00
There's a build failure for Book3E without AltiVec: Error: cc1: error: AltiVec not supported in this target make[6]: *** [/linux/scripts/Makefile.build:250: drivers/gpu/drm/amd/amdgpu/../display/dc/dml/display_mode_lib.o] Error 1 This happens because the amdgpu build is only gated by PPC_LONG_DOUBLE_128, but that symbol can be enabled even though AltiVec is disabled. The only user of PPC_LONG_DOUBLE_128 is amdgpu, so just add a dependency on AltiVec to that symbol to fix the build. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20221027125626.1383092-1-mpe@ellerman.id.au
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
@@ -285,7 +285,7 @@ config PPC
 	#
 
 config PPC_LONG_DOUBLE_128
-	depends on PPC64
+	depends on PPC64 && ALTIVEC
 	def_bool $(success,test "$(shell,echo __LONG_DOUBLE_128__ | $(CC) -E -P -)" = 1)
 
 config PPC_BARRIER_NOSPEC

Original file line number	Diff line number	Diff line change
`@@ -285,7 +285,7 @@ config PPC`
`285`	`285`	`#`
`286`	`286`
`287`	`287`	`config PPC_LONG_DOUBLE_128`
`288`		`- depends on PPC64`
	`288`	`+ depends on PPC64 && ALTIVEC`
`289`	`289`	`def_bool $(success,test "$(shell,echo __LONG_DOUBLE_128__ \| $(CC) -E -P -)" = 1)`
`290`	`290`
`291`	`291`	`config PPC_BARRIER_NOSPEC`