From mboxrd@z Thu Jan 1 00:00:00 1970 From: Liu Ying Subject: [PATCH 1/3] pwm: i.MX: Fix the macro MX3_PWMCR_PRESCALER(x) definition Date: Wed, 28 May 2014 18:50:11 +0800 Message-ID: <1401274213-8954-1-git-send-email-Ying.Liu@freescale.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from mail-bl2lp0211.outbound.protection.outlook.com ([207.46.163.211]:7808 "EHLO na01-bl2-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752510AbaE1Krx (ORCPT ); Wed, 28 May 2014 06:47:53 -0400 Sender: linux-pwm-owner@vger.kernel.org List-Id: linux-pwm@vger.kernel.org To: linux-pwm@vger.kernel.org Cc: thierry.reding@gmail.com, s.hauer@pengutronix.de, shawn.guo@freescale.com, LW@KARO-electronics.de, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org This patch adds missing parentheses around the argument of the macro MX3_PWMCR_PRESCALER(x) to avoid any potential macro expansion issue. Reported-by: Lothar Wa=C3=9Fmann Cc: Thierry Reding Cc: Sascha Hauer Cc: Shawn Guo Cc: Lothar Wa=C3=9Fmann Cc: linux-pwm@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Signed-off-by: Liu Ying --- drivers/pwm/pwm-imx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/pwm/pwm-imx.c b/drivers/pwm/pwm-imx.c index cc47733..9835e0b 100644 --- a/drivers/pwm/pwm-imx.c +++ b/drivers/pwm/pwm-imx.c @@ -32,7 +32,7 @@ #define MX3_PWMCR 0x00 /* PWM Control Register */ #define MX3_PWMSAR 0x0C /* PWM Sample Register */ #define MX3_PWMPR 0x10 /* PWM Period Register */ -#define MX3_PWMCR_PRESCALER(x) (((x - 1) & 0xFFF) << 4) +#define MX3_PWMCR_PRESCALER(x) ((((x) - 1) & 0xFFF) << 4) #define MX3_PWMCR_DOZEEN (1 << 24) #define MX3_PWMCR_WAITEN (1 << 23) #define MX3_PWMCR_DBGEN (1 << 22) --=20 1.7.9.5