From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755606AbaIRMiZ (ORCPT ); Thu, 18 Sep 2014 08:38:25 -0400 Received: from mx1.redhat.com ([209.132.183.28]:31859 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751080AbaIRMiW (ORCPT ); Thu, 18 Sep 2014 08:38:22 -0400 From: Amos Kong To: virtualization@lists.linux-foundation.org Cc: kvm@vger.kernel.org, herbert@gondor.apana.org.au, m@bues.ch, mpm@selenic.com, amit.shah@redhat.com, rusty@rustcorp.com.au, linux-kernel@vger.kernel.org Subject: [PATCH v2 5/6] hw_random: don't double-check old_rng. Date: Thu, 18 Sep 2014 20:37:46 +0800 Message-Id: <1411043867-21109-6-git-send-email-akong@redhat.com> In-Reply-To: <1411043867-21109-1-git-send-email-akong@redhat.com> References: <1411043867-21109-1-git-send-email-akong@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Rusty Russell Interesting anti-pattern. Signed-off-by: Rusty Russell --- drivers/char/hw_random/core.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/char/hw_random/core.c b/drivers/char/hw_random/core.c index 9f6f5bb..6420409 100644 --- a/drivers/char/hw_random/core.c +++ b/drivers/char/hw_random/core.c @@ -473,14 +473,13 @@ int hwrng_register(struct hwrng *rng) } old_rng = current_rng; + err = 0; if (!old_rng) { err = hwrng_init(rng); if (err) goto out_unlock; set_current_rng(rng); - } - err = 0; - if (!old_rng) { + err = register_miscdev(); if (err) { drop_current_rng(); -- 1.9.3