From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753451AbbAYOWZ (ORCPT ); Sun, 25 Jan 2015 09:22:25 -0500 Received: from mx02.posteo.de ([89.146.194.165]:48947 "EHLO mx02.posteo.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751719AbbAYOWW (ORCPT ); Sun, 25 Jan 2015 09:22:22 -0500 From: Martin Kepplinger To: mchehab@osg.samsung.com Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, Martin Kepplinger Subject: [PATCH] media: (stb0899) use sign_extend32() for sign extension Date: Sun, 25 Jan 2015 15:22:05 +0100 Message-Id: <1422195725-23577-1-git-send-email-martink@posteo.de> X-Mailer: git-send-email 2.1.4 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Signed-off-by: Martin Kepplinger --- drivers/media/dvb-frontends/stb0899_algo.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/media/dvb-frontends/stb0899_algo.c b/drivers/media/dvb-frontends/stb0899_algo.c index 93596e0..7bbcfde 100644 --- a/drivers/media/dvb-frontends/stb0899_algo.c +++ b/drivers/media/dvb-frontends/stb0899_algo.c @@ -19,6 +19,7 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ +#include #include "stb0899_drv.h" #include "stb0899_priv.h" #include "stb0899_reg.h" @@ -1490,9 +1491,7 @@ enum stb0899_status stb0899_dvbs2_algo(struct stb0899_state *state) /* Store signal parameters */ offsetfreq = STB0899_READ_S2REG(STB0899_S2DEMOD, CRL_FREQ); - /* sign extend 30 bit value before using it in calculations */ - if (offsetfreq & (1 << 29)) - offsetfreq |= -1 << 30; + offsetfreq = sign_extend32(offset_freq, 29); offsetfreq = offsetfreq / ((1 << 30) / 1000); offsetfreq *= (internal->master_clk / 1000000); -- 2.1.4