From d83623c5eab25f5a83e308f24b1e6a4cb8628eb5 Mon Sep 17 00:00:00 2001 From: Masahiro Yamada Date: Fri, 17 May 2019 15:54:24 +0900 Subject: [PATCH] s390: mark __cpacf_check_opcode() and cpacf_query_func() as __always_inline Commit e60fb8bf68d4 ("s390/cpacf: mark scpacf_query() as __always_inline") was not enough to make sure to meet the 'i' (immediate) constraint for the asm operands. With CONFIG_OPTIMIZE_INLINING enabled, Laura Abbott reported error with gcc 9.1.1: In file included from arch/s390/crypto/prng.c:29: ./arch/s390/include/asm/cpacf.h: In function 'cpacf_query_func': ./arch/s390/include/asm/cpacf.h:170:2: warning: asm operand 3 probably doesn't match constraints 170 | asm volatile( | ^~~ ./arch/s390/include/asm/cpacf.h:170:2: error: impossible constraint in 'asm' Add more __always_inline to force inlining. Fixes: 9012d011660e ("compiler: allow all arches to enable CONFIG_OPTIMIZE_INLINING") Reported-by: Laura Abbott Signed-off-by: Masahiro Yamada Signed-off-by: Martin Schwidefsky Signed-off-by: Heiko Carstens --- arch/s390/include/asm/cpacf.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/s390/include/asm/cpacf.h b/arch/s390/include/asm/cpacf.h index 27696755daa9..e3d53eb6bcf5 100644 --- a/arch/s390/include/asm/cpacf.h +++ b/arch/s390/include/asm/cpacf.h @@ -178,7 +178,7 @@ static inline void __cpacf_query(unsigned int opcode, cpacf_mask_t *mask) : "cc"); } -static inline int __cpacf_check_opcode(unsigned int opcode) +static __always_inline int __cpacf_check_opcode(unsigned int opcode) { switch (opcode) { case CPACF_KMAC: @@ -218,7 +218,7 @@ static inline int cpacf_test_func(cpacf_mask_t *mask, unsigned int func) return (mask->bytes[func >> 3] & (0x80 >> (func & 7))) != 0; } -static inline int cpacf_query_func(unsigned int opcode, unsigned int func) +static __always_inline int cpacf_query_func(unsigned int opcode, unsigned int func) { cpacf_mask_t mask;