Merge tag 'v4.4-rc2' into drm-intel-next-queued

Linux 4.4-rc2

Backmerge to get at

commit 1b0e3a049efe471c399674fd954500ce97438d30
Author: Imre Deak <imre.deak@intel.com>
Date:   Thu Nov 5 23:04:11 2015 +0200

    drm/i915/skl: disable display side power well support for now

so that we can proplery re-eanble skl power wells in -next.

Conflicts are just adjacent lines changed, except for intel_fbdev.c
where we need to interleave the changs. Nothing nefarious.

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>

1 files changed, 21 insertions, 16 deletions

diff --git a/lib/random32.c b/lib/random32.c
index 0bee183fa18f..12111910ccd0 100644
--- a/lib/random32.c
+++ b/lib/random32.c
@@ -181,7 +181,7 @@ void prandom_seed(u32 entropy)
 	 * No locking on the CPUs, but then somewhat random results are, well,
 	 * expected.
 	 */
-	for_each_possible_cpu (i) {
+	for_each_possible_cpu(i) {
 		struct rnd_state *state = &per_cpu(net_rand_state, i);
 
 		state->s1 = __seed(state->s1 ^ entropy, 2U);
@@ -201,7 +201,7 @@ static int __init prandom_init(void)
 	prandom_state_selftest();
 
 	for_each_possible_cpu(i) {
-		struct rnd_state *state = &per_cpu(net_rand_state,i);
+		struct rnd_state *state = &per_cpu(net_rand_state, i);
 		u32 weak_seed = (i + jiffies) ^ random_get_entropy();
 
 		prandom_seed_early(state, weak_seed, true);
@@ -238,13 +238,30 @@ static void __init __prandom_start_seed_timer(void)
 	add_timer(&seed_timer);
 }
 
+void prandom_seed_full_state(struct rnd_state __percpu *pcpu_state)
+{
+	int i;
+
+	for_each_possible_cpu(i) {
+		struct rnd_state *state = per_cpu_ptr(pcpu_state, i);
+		u32 seeds[4];
+
+		get_random_bytes(&seeds, sizeof(seeds));
+		state->s1 = __seed(seeds[0],   2U);
+		state->s2 = __seed(seeds[1],   8U);
+		state->s3 = __seed(seeds[2],  16U);
+		state->s4 = __seed(seeds[3], 128U);
+
+		prandom_warmup(state);
+	}
+}
+
 /*
  *	Generate better values after random number generator
  *	is fully initialized.
  */
 static void __prandom_reseed(bool late)
 {
-	int i;
 	unsigned long flags;
 	static bool latch = false;
 	static DEFINE_SPINLOCK(lock);
@@ -266,19 +283,7 @@ static void __prandom_reseed(bool late)
 		goto out;
 
 	latch = true;
-
-	for_each_possible_cpu(i) {
-		struct rnd_state *state = &per_cpu(net_rand_state,i);
-		u32 seeds[4];
-
-		get_random_bytes(&seeds, sizeof(seeds));
-		state->s1 = __seed(seeds[0],   2U);
-		state->s2 = __seed(seeds[1],   8U);
-		state->s3 = __seed(seeds[2],  16U);
-		state->s4 = __seed(seeds[3], 128U);
-
-		prandom_warmup(state);
-	}
+	prandom_seed_full_state(&net_rand_state);
 out:
 	spin_unlock_irqrestore(&lock, flags);
 }