summary refs log tree commit diff
path: root/drivers/char
diff options
context:
space:
mode:
authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-03-01 16:38:16 -0800
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-03-01 16:38:16 -0800
commit523462df282fc527a01bceca5125017e2259fbf5 (patch)
treeb3cca26b719ce1f46f203e2f86334525a2f50e14 /drivers/char
parent35bf7692e765c2275bf93fe573f7ca868ab73453 (diff)
parentfc77dbd34c5c99bce46d40a2491937c3bcbd10af (diff)
downloadlinux-523462df282fc527a01bceca5125017e2259fbf5.tar.gz
Merge 4.5-rc6 into char-misc-next
We want the fixes in here, and others are sending us pull requests based
on this kernel tree.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/char')
-rw-r--r--drivers/char/hpet.c2
-rw-r--r--drivers/char/random.c22
2 files changed, 23 insertions, 1 deletions
diff --git a/drivers/char/hpet.c b/drivers/char/hpet.c
index 240b6cf1d97c..be54e5331a45 100644
--- a/drivers/char/hpet.c
+++ b/drivers/char/hpet.c
@@ -42,7 +42,7 @@
 /*
  * The High Precision Event Timer driver.
  * This driver is closely modelled after the rtc.c driver.
- * http://www.intel.com/hardwaredesign/hpetspec_1.pdf
+ * See HPET spec revision 1.
  */
 #define	HPET_USER_FREQ	(64)
 #define	HPET_DRIFT	(500)
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> .....]