diff options
Diffstat (limited to 'arch/s390/include/asm/archrandom.h')
-rw-r--r-- | arch/s390/include/asm/archrandom.h | 33 |
1 files changed, 7 insertions, 26 deletions
diff --git a/arch/s390/include/asm/archrandom.h b/arch/s390/include/asm/archrandom.h index 4120c428dc37..1594049893e0 100644 --- a/arch/s390/include/asm/archrandom.h +++ b/arch/s390/include/asm/archrandom.h @@ -11,8 +11,6 @@ #ifndef _ASM_S390_ARCHRANDOM_H #define _ASM_S390_ARCHRANDOM_H -#ifdef CONFIG_ARCH_RANDOM - #include <linux/static_key.h> #include <linux/preempt.h> #include <linux/atomic.h> @@ -21,37 +19,20 @@ DECLARE_STATIC_KEY_FALSE(s390_arch_random_available); extern atomic64_t s390_arch_random_counter; -static inline bool __must_check arch_get_random_long(unsigned long *v) -{ - return false; -} - -static inline bool __must_check arch_get_random_int(unsigned int *v) -{ - return false; -} - -static inline bool __must_check arch_get_random_seed_long(unsigned long *v) +static inline size_t __must_check arch_get_random_longs(unsigned long *v, size_t max_longs) { - if (static_branch_likely(&s390_arch_random_available) && - in_task()) { - cpacf_trng(NULL, 0, (u8 *)v, sizeof(*v)); - atomic64_add(sizeof(*v), &s390_arch_random_counter); - return true; - } - return false; + return 0; } -static inline bool __must_check arch_get_random_seed_int(unsigned int *v) +static inline size_t __must_check arch_get_random_seed_longs(unsigned long *v, size_t max_longs) { if (static_branch_likely(&s390_arch_random_available) && in_task()) { - cpacf_trng(NULL, 0, (u8 *)v, sizeof(*v)); - atomic64_add(sizeof(*v), &s390_arch_random_counter); - return true; + cpacf_trng(NULL, 0, (u8 *)v, max_longs * sizeof(*v)); + atomic64_add(max_longs * sizeof(*v), &s390_arch_random_counter); + return max_longs; } - return false; + return 0; } -#endif /* CONFIG_ARCH_RANDOM */ #endif /* _ASM_S390_ARCHRANDOM_H */ |