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Message-Id: <20220623164345.625525226@linuxfoundation.org>
Date: Thu, 23 Jun 2022 18:42:00 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org,
Dominik Brodowski <linux@...inikbrodowski.net>,
"Jason A. Donenfeld" <Jason@...c4.com>
Subject: [PATCH 4.14 086/237] random: access primary_pool directly rather than through pointer
From: Dominik Brodowski <linux@...inikbrodowski.net>
commit ebf7606388732ecf2821ca21087e9446cb4a5b57 upstream.
Both crng_initialize_primary() and crng_init_try_arch_early() are
only called for the primary_pool. Accessing it directly instead of
through a function parameter simplifies the code.
Signed-off-by: Dominik Brodowski <linux@...inikbrodowski.net>
Signed-off-by: Jason A. Donenfeld <Jason@...c4.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
drivers/char/random.c | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -761,7 +761,7 @@ static bool crng_init_try_arch(struct cr
return arch_init;
}
-static bool __init crng_init_try_arch_early(struct crng_state *crng)
+static bool __init crng_init_try_arch_early(void)
{
int i;
bool arch_init = true;
@@ -773,7 +773,7 @@ static bool __init crng_init_try_arch_ea
rv = random_get_entropy();
arch_init = false;
}
- crng->state[i] ^= rv;
+ primary_crng.state[i] ^= rv;
}
return arch_init;
@@ -787,16 +787,16 @@ static void crng_initialize_secondary(st
crng->init_time = jiffies - CRNG_RESEED_INTERVAL - 1;
}
-static void __init crng_initialize_primary(struct crng_state *crng)
+static void __init crng_initialize_primary(void)
{
- _extract_entropy(&crng->state[4], sizeof(u32) * 12);
- if (crng_init_try_arch_early(crng) && trust_cpu && crng_init < 2) {
+ _extract_entropy(&primary_crng.state[4], sizeof(u32) * 12);
+ if (crng_init_try_arch_early() && trust_cpu && crng_init < 2) {
invalidate_batched_entropy();
numa_crng_init();
crng_init = 2;
pr_notice("crng init done (trusting CPU's manufacturer)\n");
}
- crng->init_time = jiffies - CRNG_RESEED_INTERVAL - 1;
+ primary_crng.init_time = jiffies - CRNG_RESEED_INTERVAL - 1;
}
static void crng_finalize_init(struct crng_state *crng)
@@ -1697,7 +1697,7 @@ int __init rand_initialize(void)
init_std_data();
if (crng_need_final_init)
crng_finalize_init(&primary_crng);
- crng_initialize_primary(&primary_crng);
+ crng_initialize_primary();
crng_global_init_time = jiffies;
if (ratelimit_disable) {
urandom_warning.interval = 0;
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