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| author | Olof Johansson <olof@lixom.net> | 2014-05-29 13:39:43 -0700 |
|---|---|---|
| committer | Olof Johansson <olof@lixom.net> | 2014-05-29 13:39:43 -0700 |
| commit | 8320857b1d168fd17d7cee48bbfd04aaf6797be8 (patch) | |
| tree | 58b31d3d9514df93974216f190824d73f9816d9f /drivers/char/random.c | |
| parent | 263c08af44741697202b85e631a964ee85200eb0 (diff) | |
| parent | 4b660a7f5c8099d88d1a43d8ae138965112592c7 (diff) | |
Merge tag 'v3.15-rc6' into next/defconfig
Linux 3.15-rc6
Diffstat (limited to 'drivers/char/random.c')
| -rw-r--r-- | drivers/char/random.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/char/random.c b/drivers/char/random.c index 6b75713d953a..102c50d38902 100644 --- a/drivers/char/random.c +++ b/drivers/char/random.c @@ -995,8 +995,11 @@ retry: ibytes = min_t(size_t, ibytes, have_bytes - reserved); if (ibytes < min) ibytes = 0; - entropy_count = max_t(int, 0, - entropy_count - (ibytes << (ENTROPY_SHIFT + 3))); + if (have_bytes >= ibytes + reserved) + entropy_count -= ibytes << (ENTROPY_SHIFT + 3); + else + entropy_count = reserved << (ENTROPY_SHIFT + 3); + if (cmpxchg(&r->entropy_count, orig, entropy_count) != orig) goto retry; |