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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-05-23 10:13:53 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-05-23 10:13:53 +0900 |
| commit | cbfef53360ea88fa7ef9f80def778fba9b05d21e (patch) | |
| tree | 9e23ee08206ec0304e25e8a93eabc2d5bcd8ae9c /drivers/char/random.c | |
| parent | d35cc56ddfc948d8df1aa6d41ac345fcec01854d (diff) | |
| parent | 4b660a7f5c8099d88d1a43d8ae138965112592c7 (diff) | |
Merge 3.15-rc6 into driver-core-next
We want the kernfs fixes in this branch as well for testing.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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; |