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path: root/drivers/char/random.c
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Diffstat (limited to 'drivers/char/random.c')
-rw-r--r--drivers/char/random.c8
1 files changed, 2 insertions, 6 deletions
diff --git a/drivers/char/random.c b/drivers/char/random.c
index 3823cb2e3b9..a754132336b 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -457,7 +457,7 @@ static void __add_entropy_words(struct entropy_store *r, const __u32 *in,
unsigned long i, add_ptr, tap1, tap2, tap3, tap4, tap5;
int input_rotate;
int wordmask = r->poolinfo->poolwords - 1;
- __u32 w, next_w;
+ __u32 w;
unsigned long flags;
/* Taps are constant, so we can load them without holding r->lock. */
@@ -466,17 +466,13 @@ static void __add_entropy_words(struct entropy_store *r, const __u32 *in,
tap3 = r->poolinfo->tap3;
tap4 = r->poolinfo->tap4;
tap5 = r->poolinfo->tap5;
- next_w = *in++;
spin_lock_irqsave(&r->lock, flags);
- prefetch_range(r->pool, wordmask);
input_rotate = r->input_rotate;
add_ptr = r->add_ptr;
while (nwords--) {
- w = rol32(next_w, input_rotate & 31);
- if (nwords > 0)
- next_w = *in++;
+ w = rol32(*in++, input_rotate & 31);
i = add_ptr = (add_ptr - 1) & wordmask;
/* XOR in the various taps */