diff options
| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-03-01 16:10:45 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-03-01 16:10:45 -0800 |
| commit | 3e66848a3249105fe4973b0550b5b6cd42240168 (patch) | |
| tree | 3ff7bbcf2a476291f5536ea09b256c541c4456f3 /drivers/char/random.c | |
| parent | 2cda64cf6998a1d10961f69e2ac79c69b6d37795 (diff) | |
| parent | fc77dbd34c5c99bce46d40a2491937c3bcbd10af (diff) | |
| download | linux-3e66848a3249105fe4973b0550b5b6cd42240168.tar.gz linux-3e66848a3249105fe4973b0550b5b6cd42240168.tar.bz2 linux-3e66848a3249105fe4973b0550b5b6cd42240168.zip | |
Merge 4.5-rc6 into staging-next
We want the staging fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/char/random.c')
| -rw-r--r-- | drivers/char/random.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/char/random.c b/drivers/char/random.c index d0da5d852d41..b583e5336630 100644 --- a/drivers/char/random.c +++ b/drivers/char/random.c @@ -1819,6 +1819,28 @@ unsigned int get_random_int(void) EXPORT_SYMBOL(get_random_int); /* + * Same as get_random_int(), but returns unsigned long. + */ +unsigned long get_random_long(void) +{ + __u32 *hash; + unsigned long ret; + + if (arch_get_random_long(&ret)) + return ret; + + hash = get_cpu_var(get_random_int_hash); + + hash[0] += current->pid + jiffies + random_get_entropy(); + md5_transform(hash, random_int_secret); + ret = *(unsigned long *)hash; + put_cpu_var(get_random_int_hash); + + return ret; +} +EXPORT_SYMBOL(get_random_long); + +/* * randomize_range() returns a start address such that * * [...... <range> .....] |
