diff --git a/drivers/char/random.c b/drivers/char/random.c
index 4cf02bff7642..ff9e42073bf8 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -232,10 +232,7 @@ static void _warn_unseeded_randomness(const char *func_name, void *caller, void
  *
  *********************************************************************/
 
-enum {
-	CRNG_RESEED_INTERVAL = 300 * HZ,
-	CRNG_INIT_CNT_THRESH = 2 * CHACHA_KEY_SIZE
-};
+enum { CRNG_RESEED_INTERVAL = 300 * HZ };
 
 static struct {
 	u8 key[CHACHA_KEY_SIZE] __aligned(__alignof__(long));
@@ -259,6 +256,8 @@ static DEFINE_PER_CPU(struct crng, crngs) = {
 
 /* Used by crng_reseed() to extract a new seed from the input pool. */
 static bool drain_entropy(void *buf, size_t nbytes, bool force);
+/* Used by crng_make_state() to extract a new seed when crng_init==0. */
+static void extract_entropy(void *buf, size_t nbytes);
 
 /*
  * This extracts a new crng key from the input pool, but only if there is a
@@ -383,17 +382,20 @@ static void crng_make_state(u32 chacha_state[CHACHA_STATE_WORDS],
 	/*
 	 * For the fast path, we check whether we're ready, unlocked first, and
 	 * then re-check once locked later. In the case where we're really not
-	 * ready, we do fast key erasure with the base_crng directly, because
-	 * this is what crng_pre_init_inject() mutates during early init.
+	 * ready, we do fast key erasure with the base_crng directly, extracting
+	 * when crng_init==0.
 	 */
 	if (!crng_ready()) {
 		bool ready;
 
 		spin_lock_irqsave(&base_crng.lock, flags);
 		ready = crng_ready();
-		if (!ready)
+		if (!ready) {
+			if (crng_init == 0)
+				extract_entropy(base_crng.key, sizeof(base_crng.key));
 			crng_fast_key_erasure(base_crng.key, chacha_state,
 					      random_data, random_data_len);
+		}
 		spin_unlock_irqrestore(&base_crng.lock, flags);
 		if (!ready)
 			return;
@@ -434,48 +436,6 @@ static void crng_make_state(u32 chacha_state[CHACHA_STATE_WORDS],
 	local_unlock_irqrestore(&crngs.lock, flags);
 }
 
-/*
- * This function is for crng_init == 0 only. It loads entropy directly
- * into the crng's key, without going through the input pool. It is,
- * generally speaking, not very safe, but we use this only at early
- * boot time when it's better to have something there rather than
- * nothing.
- *
- * If account is set, then the crng_init_cnt counter is incremented.
- * This shouldn't be set by functions like add_device_randomness(),
- * where we can't trust the buffer passed to it is guaranteed to be
- * unpredictable (so it might not have any entropy at all).
- */
-static void crng_pre_init_inject(const void *input, size_t len, bool account)
-{
-	static int crng_init_cnt = 0;
-	struct blake2s_state hash;
-	unsigned long flags;
-
-	blake2s_init(&hash, sizeof(base_crng.key));
-
-	spin_lock_irqsave(&base_crng.lock, flags);
-	if (crng_init != 0) {
-		spin_unlock_irqrestore(&base_crng.lock, flags);
-		return;
-	}
-
-	blake2s_update(&hash, base_crng.key, sizeof(base_crng.key));
-	blake2s_update(&hash, input, len);
-	blake2s_final(&hash, base_crng.key);
-
-	if (account) {
-		crng_init_cnt += min_t(size_t, len, CRNG_INIT_CNT_THRESH - crng_init_cnt);
-		if (crng_init_cnt >= CRNG_INIT_CNT_THRESH)
-			crng_init = 1;
-	}
-
-	spin_unlock_irqrestore(&base_crng.lock, flags);
-
-	if (crng_init == 1)
-		pr_notice("fast init done\n");
-}
-
 static void _get_random_bytes(void *buf, size_t nbytes)
 {
 	u32 chacha_state[CHACHA_STATE_WORDS];
@@ -788,7 +748,8 @@ EXPORT_SYMBOL(get_random_bytes_arch);
 
 enum {
 	POOL_BITS = BLAKE2S_HASH_SIZE * 8,
-	POOL_MIN_BITS = POOL_BITS /* No point in settling for less. */
+	POOL_MIN_BITS = POOL_BITS, /* No point in settling for less. */
+	POOL_FAST_INIT_BITS = POOL_MIN_BITS / 2
 };
 
 /* For notifying userspace should write into /dev/random. */
@@ -825,24 +786,6 @@ static void mix_pool_bytes(const void *in, size_t nbytes)
 	spin_unlock_irqrestore(&input_pool.lock, flags);
 }
 
-static void credit_entropy_bits(size_t nbits)
-{
-	unsigned int entropy_count, orig, add;
-
-	if (!nbits)
-		return;
-
-	add = min_t(size_t, nbits, POOL_BITS);
-
-	do {
-		orig = READ_ONCE(input_pool.entropy_count);
-		entropy_count = min_t(unsigned int, POOL_BITS, orig + add);
-	} while (cmpxchg(&input_pool.entropy_count, orig, entropy_count) != orig);
-
-	if (!crng_ready() && entropy_count >= POOL_MIN_BITS)
-		crng_reseed(false);
-}
-
 /*
  * This is an HKDF-like construction for using the hashed collected entropy
  * as a PRF key, that's then expanded block-by-block.
@@ -908,6 +851,32 @@ static bool drain_entropy(void *buf, size_t nbytes, bool force)
 	return true;
 }
 
+static void credit_entropy_bits(size_t nbits)
+{
+	unsigned int entropy_count, orig, add;
+	unsigned long flags;
+
+	if (!nbits)
+		return;
+
+	add = min_t(size_t, nbits, POOL_BITS);
+
+	do {
+		orig = READ_ONCE(input_pool.entropy_count);
+		entropy_count = min_t(unsigned int, POOL_BITS, orig + add);
+	} while (cmpxchg(&input_pool.entropy_count, orig, entropy_count) != orig);
+
+	if (!crng_ready() && entropy_count >= POOL_MIN_BITS)
+		crng_reseed(false);
+	else if (unlikely(crng_init == 0 && entropy_count >= POOL_FAST_INIT_BITS)) {
+		spin_lock_irqsave(&base_crng.lock, flags);
+		if (crng_init == 0) {
+			extract_entropy(base_crng.key, sizeof(base_crng.key));
+			crng_init = 1;
+		}
+		spin_unlock_irqrestore(&base_crng.lock, flags);
+	}
+}
 
 /**********************************************************************
  *
@@ -1040,8 +1009,8 @@ int __init rand_initialize(void)
 	_mix_pool_bytes(&now, sizeof(now));
 	_mix_pool_bytes(utsname(), sizeof(*(utsname())));
 
-	extract_entropy(base_crng.key, sizeof(base_crng.key));
-	++base_crng.generation;
+	if (crng_ready())
+		crng_reseed(true);
 
 	if (arch_init && trust_cpu && !crng_ready()) {
 		crng_init = 2;
@@ -1073,9 +1042,6 @@ void add_device_randomness(const void *buf, size_t size)
 	unsigned long entropy = random_get_entropy();
 	unsigned long flags;
 
-	if (crng_init == 0 && size)
-		crng_pre_init_inject(buf, size, false);
-
 	spin_lock_irqsave(&input_pool.lock, flags);
 	_mix_pool_bytes(&entropy, sizeof(entropy));
 	_mix_pool_bytes(buf, size);
@@ -1191,12 +1157,6 @@ void rand_initialize_disk(struct gendisk *disk)
 void add_hwgenerator_randomness(const void *buffer, size_t count,
 				size_t entropy)
 {
-	if (unlikely(crng_init == 0 && entropy < POOL_MIN_BITS)) {
-		crng_pre_init_inject(buffer, count, true);
-		mix_pool_bytes(buffer, count);
-		return;
-	}
-
 	/*
 	 * Throttle writing if we're above the trickle threshold.
 	 * We'll be woken up again once below POOL_MIN_BITS, when
@@ -1204,7 +1164,7 @@ void add_hwgenerator_randomness(const void *buffer, size_t count,
 	 * CRNG_RESEED_INTERVAL has elapsed.
 	 */
 	wait_event_interruptible_timeout(random_write_wait,
-			!system_wq || kthread_should_stop() ||
+			kthread_should_stop() ||
 			input_pool.entropy_count < POOL_MIN_BITS,
 			CRNG_RESEED_INTERVAL);
 	mix_pool_bytes(buffer, count);
@@ -1213,17 +1173,14 @@ void add_hwgenerator_randomness(const void *buffer, size_t count,
 EXPORT_SYMBOL_GPL(add_hwgenerator_randomness);
 
 /*
- * Handle random seed passed by bootloader.
- * If the seed is trustworthy, it would be regarded as hardware RNGs. Otherwise
- * it would be regarded as device data.
- * The decision is controlled by CONFIG_RANDOM_TRUST_BOOTLOADER.
+ * Handle random seed passed by bootloader, and credit it if
+ * CONFIG_RANDOM_TRUST_BOOTLOADER is set.
  */
 void add_bootloader_randomness(const void *buf, size_t size)
 {
+	mix_pool_bytes(buf, size);
 	if (trust_bootloader)
-		add_hwgenerator_randomness(buf, size, size * 8);
-	else
-		add_device_randomness(buf, size);
+		credit_entropy_bits(size * 8);
 }
 EXPORT_SYMBOL_GPL(add_bootloader_randomness);
 
@@ -1357,13 +1314,8 @@ static void mix_interrupt_randomness(struct work_struct *work)
 	fast_pool->last = jiffies;
 	local_irq_enable();
 
-	if (unlikely(crng_init == 0)) {
-		crng_pre_init_inject(pool, sizeof(pool), true);
-		mix_pool_bytes(pool, sizeof(pool));
-	} else {
-		mix_pool_bytes(pool, sizeof(pool));
-		credit_entropy_bits(1);
-	}
+	mix_pool_bytes(pool, sizeof(pool));
+	credit_entropy_bits(1);
 
 	memzero_explicit(pool, sizeof(pool));
 }
