Received-SPF: pass (google.com: domain of linux-crypto-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
From:   Nicolai Stange <nstange@suse.de>
To:     "Theodore Y. Ts'o" <tytso@mit.edu>
Cc:     linux-crypto@vger.kernel.org, LKML <linux-kernel@vger.kernel.org>,
        Arnd Bergmann <arnd@arndb.de>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        "Eric W. Biederman" <ebiederm@xmission.com>,
        "Alexander E. Patrakov" <patrakov@gmail.com>,
        "Ahmed S. Darwish" <darwish.07@gmail.com>,
        Willy Tarreau <w@1wt.eu>,
        Matthew Garrett <mjg59@srcf.ucam.org>,
        Vito Caputo <vcaputo@pengaru.com>,
        Andreas Dilger <adilger.kernel@dilger.ca>,
        Jan Kara <jack@suse.cz>, Ray Strode <rstrode@redhat.com>,
        William Jon McCann <mccann@jhu.edu>,
        zhangjs <zachary@baishancloud.com>,
        Andy Lutomirski <luto@kernel.org>,
        Florian Weimer <fweimer@redhat.com>,
        Lennart Poettering <mzxreary@0pointer.de>,
        Peter Matthias <matthias.peter@bsi.bund.de>,
        Marcelo Henrique Cerri <marcelo.cerri@canonical.com>,
        Roman Drahtmueller <draht@schaltsekun.de>,
        Neil Horman <nhorman@redhat.com>,
        Randy Dunlap <rdunlap@infradead.org>,
        Julia Lawall <julia.lawall@inria.fr>,
        Dan Carpenter <dan.carpenter@oracle.com>,
        Andy Lavr <andy.lavr@gmail.com>,
        Eric Biggers <ebiggers@kernel.org>,
        "Jason A. Donenfeld" <Jason@zx2c4.com>,
        =?UTF-8?q?Stephan=20M=C3=BCller?= <smueller@chronox.de>,
        Torsten Duwe <duwe@suse.de>, Petr Tesarik <ptesarik@suse.cz>,
        Nicolai Stange <nstange@suse.de>
Subject: [RFC PATCH 01/41] random: remove dead code in credit_entropy_bits()
Date:   Mon, 21 Sep 2020 09:58:17 +0200
Message-Id: <20200921075857.4424-2-nstange@suse.de>
In-Reply-To: <20200921075857.4424-1-nstange@suse.de>
References: <20200921075857.4424-1-nstange@suse.de>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

Since commit 90ea1c6436d2 ("random: remove the blocking pool") the local
has_initialized in credit_entropy_bits() won't get set anymore and
the corresponding if-clause became dead code. Remove it as well as the
has_initialized variable itself from credit_entropy_bits().

Signed-off-by: Nicolai Stange <nstange@suse.de>
---
 drivers/char/random.c | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/drivers/char/random.c b/drivers/char/random.c
index d20ba1b104ca..0580968fd28c 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -660,7 +660,7 @@ static void process_random_ready_list(void)
  */
 static void credit_entropy_bits(struct entropy_store *r, int nbits)
 {
-	int entropy_count, orig, has_initialized = 0;
+	int entropy_count, orig;
 	const int pool_size = r->poolinfo->poolfracbits;
 	int nfrac = nbits << ENTROPY_SHIFT;
 
@@ -717,11 +717,6 @@ static void credit_entropy_bits(struct entropy_store *r, int nbits)
 	if (cmpxchg(&r->entropy_count, orig, entropy_count) != orig)
 		goto retry;
 
-	if (has_initialized) {
-		r->initialized = 1;
-		kill_fasync(&fasync, SIGIO, POLL_IN);
-	}
-
 	trace_credit_entropy_bits(r->name, nbits,
 				  entropy_count >> ENTROPY_SHIFT, _RET_IP_);
 
-- 
2.26.2