| Message ID | 20240306125853.3714578-2-mpe@ellerman.id.au (mailing list archive) |
|---|---|
| State | Accepted |
| Commit | c2e5d70cf05b48bfbd5b6625bbd0ec3052cecd5d |
| Headers | show |
| Series | [1/3] powerpc/64s: Fix get_hugepd_cache_index() build failure | expand |
diff --git a/arch/powerpc/include/asm/switch_to.h b/arch/powerpc/include/asm/switch_to.h index aee25e3ebf96..fc933807ddc8 100644 --- a/arch/powerpc/include/asm/switch_to.h +++ b/arch/powerpc/include/asm/switch_to.h @@ -48,6 +48,10 @@ static inline void disable_kernel_fp(void) #else static inline void save_fpu(struct task_struct *t) { } static inline void flush_fp_to_thread(struct task_struct *t) { } +static inline void enable_kernel_fp(void) +{ + BUILD_BUG(); +} #endif #ifdef CONFIG_ALTIVEC diff --git a/arch/powerpc/platforms/83xx/suspend.c b/arch/powerpc/platforms/83xx/suspend.c index c9664e46b03d..99bd4355f28e 100644 --- a/arch/powerpc/platforms/83xx/suspend.c +++ b/arch/powerpc/platforms/83xx/suspend.c @@ -206,7 +206,8 @@ static int mpc83xx_suspend_enter(suspend_state_t state) out_be32(&pmc_regs->config1, in_be32(&pmc_regs->config1) | PMCCR1_POWER_OFF); - enable_kernel_fp(); + if (IS_ENABLED(CONFIG_PPC_FPU)) + enable_kernel_fp(); mpc83xx_enter_deep_sleep(immrbase);
Building eg. 83xx/mpc832x_rdb_defconfig with FPU=n, fails with: arch/powerpc/platforms/83xx/suspend.c: In function 'mpc83xx_suspend_enter': arch/powerpc/platforms/83xx/suspend.c:209:17: error: implicit declaration of function 'enable_kernel_fp' 209 | enable_kernel_fp(); Fix it by providing an enable_kernel_fp() stub for FPU=n builds, which allows using IS_ENABLED(CONFIG_PPC_FPU) around the call to enable_kernel_fp(). Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> --- arch/powerpc/include/asm/switch_to.h | 4 ++++ arch/powerpc/platforms/83xx/suspend.c | 3 ++- 2 files changed, 6 insertions(+), 1 deletion(-)