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Diffstat (limited to 'arch/s390/include/asm/archrandom.h')
-rw-r--r--arch/s390/include/asm/archrandom.h13
1 files changed, 3 insertions, 10 deletions
diff --git a/arch/s390/include/asm/archrandom.h b/arch/s390/include/asm/archrandom.h
index 09aed1095336..c67b82dfa558 100644
--- a/arch/s390/include/asm/archrandom.h
+++ b/arch/s390/include/asm/archrandom.h
@@ -15,16 +15,11 @@
#include <linux/static_key.h>
#include <linux/atomic.h>
-#include <asm/cpacf.h>
DECLARE_STATIC_KEY_FALSE(s390_arch_random_available);
extern atomic64_t s390_arch_random_counter;
-static void s390_arch_random_generate(u8 *buf, unsigned int nbytes)
-{
- cpacf_trng(NULL, 0, buf, nbytes);
- atomic64_add(nbytes, &s390_arch_random_counter);
-}
+bool s390_arch_random_generate(u8 *buf, unsigned int nbytes);
static inline bool arch_has_random(void)
{
@@ -51,8 +46,7 @@ static inline bool arch_get_random_int(unsigned int *v)
static inline bool arch_get_random_seed_long(unsigned long *v)
{
if (static_branch_likely(&s390_arch_random_available)) {
- s390_arch_random_generate((u8 *)v, sizeof(*v));
- return true;
+ return s390_arch_random_generate((u8 *)v, sizeof(*v));
}
return false;
}
@@ -60,8 +54,7 @@ static inline bool arch_get_random_seed_long(unsigned long *v)
static inline bool arch_get_random_seed_int(unsigned int *v)
{
if (static_branch_likely(&s390_arch_random_available)) {
- s390_arch_random_generate((u8 *)v, sizeof(*v));
- return true;
+ return s390_arch_random_generate((u8 *)v, sizeof(*v));
}
return false;
}