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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-03-01 16:10:45 -0800
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-03-01 16:10:45 -0800
commit3e66848a3249105fe4973b0550b5b6cd42240168 (patch)
tree3ff7bbcf2a476291f5536ea09b256c541c4456f3 /drivers/char/random.c
parent2cda64cf6998a1d10961f69e2ac79c69b6d37795 (diff)
parentfc77dbd34c5c99bce46d40a2491937c3bcbd10af (diff)
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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.c22
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> .....]