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-rw-r--r--drivers/char/random.c15
1 files changed, 1 insertions, 14 deletions
diff --git a/drivers/char/random.c b/drivers/char/random.c
index 5f3b8ac9d97b..84e24986a97a 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -1261,8 +1261,6 @@ void add_interrupt_randomness(int irq, int irq_flags)
cycles_t cycles = random_get_entropy();
__u32 c_high, j_high;
__u64 ip;
- unsigned long seed;
- int credit = 0;
if (cycles == 0)
cycles = get_reg(fast_pool, regs);
@@ -1298,23 +1296,12 @@ void add_interrupt_randomness(int irq, int irq_flags)
fast_pool->last = now;
__mix_pool_bytes(r, &fast_pool->pool, sizeof(fast_pool->pool));
-
- /*
- * If we have architectural seed generator, produce a seed and
- * add it to the pool. For the sake of paranoia don't let the
- * architectural seed generator dominate the input from the
- * interrupt noise.
- */
- if (arch_get_random_seed_long(&seed)) {
- __mix_pool_bytes(r, &seed, sizeof(seed));
- credit = 1;
- }
spin_unlock(&r->lock);
fast_pool->count = 0;
/* award one bit for the contents of the fast pool */
- credit_entropy_bits(r, credit + 1);
+ credit_entropy_bits(r, 1);
}
EXPORT_SYMBOL_GPL(add_interrupt_randomness);