From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755218Ab3AHVha (ORCPT ); Tue, 8 Jan 2013 16:37:30 -0500 Received: from www84.your-server.de ([213.133.104.84]:50556 "EHLO www84.your-server.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755156Ab3AHVh1 (ORCPT ); Tue, 8 Jan 2013 16:37:27 -0500 From: stefani@seibold.net To: linux-kernel@vger.kernel.org, akpm@linux-foundation.org Cc: stefani@seibold.net Subject: [PATCH 2/2] fix kfifo_alloc() and kfifo_init() Date: Tue, 8 Jan 2013 22:36:24 +0100 Message-Id: <1357680984-23007-6-git-send-email-stefani@seibold.net> X-Mailer: git-send-email 1.8.0.2 In-Reply-To: <1357680984-23007-1-git-send-email-stefani@seibold.net> References: <1357680984-23007-1-git-send-email-stefani@seibold.net> X-Authenticated-Sender: stefani@seibold.net Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Stefani Seibold This patch fix the kfifo_alloc() and kfifo_init() to alloc at least the requested number of elements. Since the kfifo operates on power of 2 the request size will be rounded up to the next power of two. Signed-off-by: Stefani Seibold --- lib/kfifo.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/lib/kfifo.c b/lib/kfifo.c index 59dcf5b..7b7f830 100644 --- a/lib/kfifo.c +++ b/lib/kfifo.c @@ -42,8 +42,7 @@ int __kfifo_alloc(struct __kfifo *fifo, unsigned int size, * round down to the next power of 2, since our 'let the indices * wrap' technique works only in this case. */ - if (!is_power_of_2(size)) - size = rounddown_pow_of_two(size); + size = roundup_pow_of_two(size); fifo->in = 0; fifo->out = 0; @@ -83,8 +82,7 @@ int __kfifo_init(struct __kfifo *fifo, void *buffer, { size /= esize; - if (!is_power_of_2(size)) - size = rounddown_pow_of_two(size); + size = roundup_pow_of_two(size); fifo->in = 0; fifo->out = 0; -- 1.8.0.2