diff options
| author | David S. Miller <davem@davemloft.net> | 2012-04-12 19:41:23 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-04-12 19:41:23 -0400 |
| commit | 011e3c63251be832d23df9f0697626ab7b354d02 (patch) | |
| tree | 2cad5b58c274c93ae49d9b58fb15d784d4dfd78f /drivers/char/random.c | |
| parent | c1412fce7eccae62b4de22494f6ab3ff8a90c0c6 (diff) | |
| parent | ecca5c3acc0d0933d89abc44e60afb0cc8170e35 (diff) | |
| download | linux-011e3c63251be832d23df9f0697626ab7b354d02.tar.bz2 | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Diffstat (limited to 'drivers/char/random.c')
| -rw-r--r-- | drivers/char/random.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/char/random.c b/drivers/char/random.c index 54ca8b23cde3..4ec04a754733 100644 --- a/drivers/char/random.c +++ b/drivers/char/random.c @@ -1260,10 +1260,15 @@ static int proc_do_uuid(ctl_table *table, int write, uuid = table->data; if (!uuid) { uuid = tmp_uuid; - uuid[8] = 0; - } - if (uuid[8] == 0) generate_random_uuid(uuid); + } else { + static DEFINE_SPINLOCK(bootid_spinlock); + + spin_lock(&bootid_spinlock); + if (!uuid[8]) + generate_random_uuid(uuid); + spin_unlock(&bootid_spinlock); + } sprintf(buf, "%pU", uuid); |