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| author | Alex Auvolat <alex@adnab.me> | 2015-03-13 18:02:01 +0100 |
|---|---|---|
| committer | Alex Auvolat <alex@adnab.me> | 2015-03-13 18:02:01 +0100 |
| commit | 151edb44eea9bf25ec466133e9dbef87bd6b1372 (patch) | |
| tree | 14537daf1be1896a5453dcff21593a4233f1c3b5 /src/kernel/core/prng.c | |
| parent | 5bc7fcc00507bbc5ff5bf957a1589209f8495534 (diff) | |
| download | kogata-151edb44eea9bf25ec466133e9dbef87bd6b1372.tar.gz kogata-151edb44eea9bf25ec466133e9dbef87bd6b1372.zip | |
Add missing mutex-locking in procesc.c ; discovered design fault somewhere.
Diffstat (limited to 'src/kernel/core/prng.c')
| -rw-r--r-- | src/kernel/core/prng.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/src/kernel/core/prng.c b/src/kernel/core/prng.c index dbffba5..77dff7d 100644 --- a/src/kernel/core/prng.c +++ b/src/kernel/core/prng.c @@ -11,6 +11,8 @@ static const uint32_t a = 16807; static const uint32_t m = 0x7FFFFFFF; uint16_t prng_word() { + int st = enter_critical(CL_NOINT); + if (++n >= 100) { n = 0; if (entropy_count) { @@ -18,7 +20,12 @@ uint16_t prng_word() { } } x = (x * a) % m; - return x & 0xFFFF; + + uint16_t ret = x & 0xFFFF; + + exit_critical(st); + + return ret; } void prng_bytes(uint8_t* out, size_t nbytes) { |