From bd59bdc898623e6c948a9f900250ce7343cf9012 Mon Sep 17 00:00:00 2001 From: Liu Ying Date: Wed, 28 May 2014 18:50:11 +0800 Subject: [PATCH] pwm: imx: Fix the macro MX3_PWMCR_PRESCALER(x) definition MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 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 Waßmann Cc: Thierry Reding Cc: Sascha Hauer Cc: Shawn Guo Cc: Lothar Waßmann Cc: linux-pwm@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Signed-off-by: Liu Ying Acked-by: Shawn Guo Signed-off-by: Thierry Reding --- 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 5449d9150d40..183225e41d60 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) -- 2.39.2