clk: rockchip: add clock ids for efuse on RK3366

[firefly-linux-kernel-4.4.55.git] / drivers / char / random.c

diff --git a/drivers/char/random.c b/drivers/char/random.c
index e5e1f1432e4d45495b2f689d4ed454c2cde1ba88..d93dfebae0bba58a7634d8dfc8e76aa97c0e515c 100644 (file)
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -948,6 +948,7 @@ void add_interrupt_randomness(int irq, int irq_flags)
        /* award one bit for the contents of the fast pool */
        credit_entropy_bits(r, credit + 1);
 }
+EXPORT_SYMBOL_GPL(add_interrupt_randomness);
 
 #ifdef CONFIG_BLOCK
 void add_disk_randomness(struct gendisk *disk)
@@ -1823,6 +1824,28 @@ 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
  *