diff options
Diffstat (limited to 'arch/s390/boot/kaslr.c')
| -rw-r--r-- | arch/s390/boot/kaslr.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/arch/s390/boot/kaslr.c b/arch/s390/boot/kaslr.c index d4442163ffa9..c8549a0474e1 100644 --- a/arch/s390/boot/kaslr.c +++ b/arch/s390/boot/kaslr.c @@ -42,7 +42,7 @@ static int check_prng(void) return PRNG_MODE_TDES; } -static unsigned long get_random(unsigned long limit) +static int get_random(unsigned long limit, unsigned long *value) { struct prng_parm prng = { /* initial parameter block for tdes mode, copied from libica */ @@ -84,9 +84,10 @@ static unsigned long get_random(unsigned long limit) (u8 *) &random, sizeof(random)); break; default: - random = 0; + return -1; } - return random % limit; + *value = random % limit; + return 0; } unsigned long get_random_base(unsigned long safe_addr) @@ -143,8 +144,7 @@ unsigned long get_random_base(unsigned long safe_addr) return 0; } - base = get_random(block_sum); - if (base == 0) + if (get_random(block_sum, &base)) return 0; if (base < safe_addr) base = safe_addr; |