From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754462AbbKYIAe (ORCPT ); Wed, 25 Nov 2015 03:00:34 -0500 Received: from mail-pa0-f65.google.com ([209.85.220.65]:32969 "EHLO mail-pa0-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754278AbbKYIAb (ORCPT ); Wed, 25 Nov 2015 03:00:31 -0500 From: Caesar Wang To: Eduardo Valentin Cc: linux-rockchip@lists.infradead.org, Heiko Stuebner , Dan Carpenter , Caesar Wang , linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, Zhang Rui , linux-arm-kernel@lists.infradead.org Subject: [PATCH 2/5] thermal: rockchip: fix a impossible condition caused by the warning Date: Wed, 25 Nov 2015 15:59:34 +0800 Message-Id: <1448438377-29203-3-git-send-email-wxt@rock-chips.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1448438377-29203-1-git-send-email-wxt@rock-chips.com> References: <1448438377-29203-1-git-send-email-wxt@rock-chips.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org As the Dan report the smatch check the thermal driver warning: drivers/thermal/rockchip_thermal.c:551 rockchip_configure_from_dt() warn: impossible condition '(thermal->tshut_temp > ((~0 >> 1))) => (s32min-s32max > s32max)' Since the Temperature is currently represented as int not long in the thermal driver. Fixes: commit 437df2172e8d ("thermal: rockchip: consistently use int for temperatures") Reported-by: Dan Carpenter Signed-off-by: Caesar Wang --- drivers/thermal/rockchip_thermal.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/thermal/rockchip_thermal.c b/drivers/thermal/rockchip_thermal.c index 85a7930..ab236a1 100644 --- a/drivers/thermal/rockchip_thermal.c +++ b/drivers/thermal/rockchip_thermal.c @@ -548,7 +548,7 @@ static int rockchip_configure_from_dt(struct device *dev, thermal->tshut_temp = shut_temp; } - if (thermal->tshut_temp > INT_MAX) { + if (!(thermal->tshut_temp < INT_MAX)) { dev_err(dev, "Invalid tshut temperature specified: %d\n", thermal->tshut_temp); return -ERANGE; -- 1.9.1