From 389586333c0229a4fbc5c1a7f89148d141293682 Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Wed, 21 Apr 2021 14:06:47 -0700 Subject: powerpc: make ALTIVEC select PPC_FPU On a kernel config with ALTIVEC=y and PPC_FPU not set/enabled, there are build errors: drivers/cpufreq/pmac32-cpufreq.c:262:2: error: implicit declaration of function 'enable_kernel_fp' [-Werror,-Wimplicit-function-declaration] enable_kernel_fp(); ../arch/powerpc/lib/sstep.c: In function 'do_vec_load': ../arch/powerpc/lib/sstep.c:637:3: error: implicit declaration of function 'put_vr' [-Werror=implicit-function-declaration] 637 | put_vr(rn, &u.v); | ^~~~~~ ../arch/powerpc/lib/sstep.c: In function 'do_vec_store': ../arch/powerpc/lib/sstep.c:660:3: error: implicit declaration of function 'get_vr'; did you mean 'get_oc'? [-Werror=implicit-function-declaration] 660 | get_vr(rn, &u.v); | ^~~~~~ In theory ALTIVEC is independent of PPC_FPU but in practice nobody is going to build such a machine, so make ALTIVEC require PPC_FPU by selecting it. Reported-by: kernel test robot Signed-off-by: Randy Dunlap Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20210421210647.20836-1-rdunlap@infradead.org --- arch/powerpc/platforms/Kconfig.cputype | 1 + 1 file changed, 1 insertion(+) (limited to 'arch/powerpc/platforms/Kconfig.cputype') diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype index 9240743caefc..e4b05667686e 100644 --- a/arch/powerpc/platforms/Kconfig.cputype +++ b/arch/powerpc/platforms/Kconfig.cputype @@ -308,6 +308,7 @@ config PHYS_64BIT config ALTIVEC bool "AltiVec Support" depends on PPC_BOOK3S_32 || PPC_BOOK3S_64 || (PPC_E500MC && PPC64) + select PPC_FPU help This option enables kernel support for the Altivec extensions to the PowerPC processor. The kernel currently supports saving and restoring -- cgit v1.2.3