diff options
| author |   Liu Ying <Ying.Liu@freescale.com> | 2014-05-28 18:50:11 +0800 |
|---|---|---|
| committer |   Thierry Reding <thierry.reding@gmail.com> | 2014-08-25 15:46:28 +0200 |
| commit | bd59bdc898623e6c948a9f900250ce7343cf9012 (patch) | |
| tree | bbdb9e00203a1b4e246b42d75ff7c188d38ceb99 /drivers/pwm/pwm-imx.c | |
| parent | pwm: Fix possible ZERO_SIZE_PTR pointer dereferencing error. (diff) | |
| download | linux-dev-bd59bdc898623e6c948a9f900250ce7343cf9012.tar.xz linux-dev-bd59bdc898623e6c948a9f900250ce7343cf9012.zip | |
pwm: imx: Fix the macro MX3_PWMCR_PRESCALER(x) definition
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 <LW@KARO-electronics.de>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Shawn Guo <shawn.guo@freescale.com>
Cc: Lothar Waßmann <LW@KARO-electronics.de>
Cc: linux-pwm@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Liu Ying <Ying.Liu@freescale.com>
Acked-by: Shawn Guo <shawn.guo@freescale.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Diffstat (limited to 'drivers/pwm/pwm-imx.c')
| -rw-r--r-- | drivers/pwm/pwm-imx.c | 2 |
1 files changed, 1 insertions, 1 deletions
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) |