Since GCC version 3.1, it is possible to specify input and output operands using symbolic names which can be referenced within the assembler code.
Convert to named operands makes easy to understand and maintain for future changes. Signed-off-by: Miguel Bernal Marin <[email protected]> --- arch/x86/include/asm/rwsem.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/x86/include/asm/rwsem.h b/arch/x86/include/asm/rwsem.h index 3245902e961f..1f5d083599ba 100644 --- a/arch/x86/include/asm/rwsem.h +++ b/arch/x86/include/asm/rwsem.h @@ -208,7 +208,7 @@ static inline void __downgrade_write(struct rw_semaphore *sem) register void *__sp asm(_ASM_SP); asm volatile("# beginning __downgrade_write\n\t" - LOCK_PREFIX _ASM_ADD "%3,(%2)\n\t" + LOCK_PREFIX _ASM_ADD "%[inc],(%[sem])\n\t" /* * transitions 0xZZZZ0001 -> 0xYYYY0001 (i386) * 0xZZZZZZZZ00000001 -> 0xYYYYYYYY00000001 (x86_64) @@ -218,7 +218,7 @@ static inline void __downgrade_write(struct rw_semaphore *sem) "1:\n\t" "# ending __downgrade_write\n" : "+m" (sem->count), "+r" (__sp) - : "a" (sem), "er" (-RWSEM_WAITING_BIAS) + : [sem] "a" (sem), [inc] "er" (-RWSEM_WAITING_BIAS) : "memory", "cc"); } -- 2.14.1
