diff options
| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-07-13 15:26:47 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-07-13 15:26:47 -0700 |
| commit | 9f48c89862e39b7f33b44123fc425cf901c89428 (patch) | |
| tree | 373886606ada8c2e0c362afbcce490af27d21552 /drivers/char | |
| parent | 2a211f320ee3d86835b40efd2948642482d3c933 (diff) | |
| parent | 1795cd9b3a91d4b5473c97f491d63892442212ab (diff) | |
Merge 3.16-rc5 into char-misc-next
This resolves a number of merge issues with changes in this tree and
Linus's tree at the same time.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/char')
| -rw-r--r-- | drivers/char/i8k.c | 4 | ||||
| -rw-r--r-- | drivers/char/random.c | 17 |
2 files changed, 12 insertions, 9 deletions
diff --git a/drivers/char/i8k.c b/drivers/char/i8k.c index 4e10c4b3c8e3..65525c7e903c 100644 --- a/drivers/char/i8k.c +++ b/drivers/char/i8k.c @@ -144,7 +144,9 @@ static int i8k_smm(struct smm_regs *regs) if (!alloc_cpumask_var(&old_mask, GFP_KERNEL)) return -ENOMEM; cpumask_copy(old_mask, ¤t->cpus_allowed); - set_cpus_allowed_ptr(current, cpumask_of(0)); + rc = set_cpus_allowed_ptr(current, cpumask_of(0)); + if (rc) + goto out; if (smp_processor_id() != 0) { rc = -EBUSY; goto out; diff --git a/drivers/char/random.c b/drivers/char/random.c index 4ad71ef2cd59..0a7ac0a7b252 100644 --- a/drivers/char/random.c +++ b/drivers/char/random.c @@ -980,7 +980,6 @@ static void push_to_pool(struct work_struct *work) static size_t account(struct entropy_store *r, size_t nbytes, int min, int reserved) { - int have_bytes; int entropy_count, orig; size_t ibytes; @@ -989,17 +988,19 @@ static size_t account(struct entropy_store *r, size_t nbytes, int min, /* Can we pull enough? */ retry: entropy_count = orig = ACCESS_ONCE(r->entropy_count); - have_bytes = entropy_count >> (ENTROPY_SHIFT + 3); ibytes = nbytes; /* If limited, never pull more than available */ - if (r->limit) - ibytes = min_t(size_t, ibytes, have_bytes - reserved); + if (r->limit) { + int have_bytes = entropy_count >> (ENTROPY_SHIFT + 3); + + if ((have_bytes -= reserved) < 0) + have_bytes = 0; + ibytes = min_t(size_t, ibytes, have_bytes); + } if (ibytes < min) ibytes = 0; - if (have_bytes >= ibytes + reserved) - entropy_count -= ibytes << (ENTROPY_SHIFT + 3); - else - entropy_count = reserved << (ENTROPY_SHIFT + 3); + if ((entropy_count -= ibytes << (ENTROPY_SHIFT + 3)) < 0) + entropy_count = 0; if (cmpxchg(&r->entropy_count, orig, entropy_count) != orig) goto retry; |