diff mbox series

[04/15] ARM: exynos: cleanup cppcheck shifting error

Message ID 20190623151313.970-5-tranmanphong@gmail.com (mailing list archive)
State New, archived
Headers show
Series cleanup cppcheck signed shifting errors | expand

Commit Message

Phong Tran June 23, 2019, 3:13 p.m. UTC
[arch/arm/mach-exynos/suspend.c:288]: (error) Shifting signed 32-bit
value by 31 bits is undefined behaviour

Signed-off-by: Phong Tran <tranmanphong@gmail.com>
---
 arch/arm/mach-exynos/suspend.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Krzysztof Kozlowski June 23, 2019, 7:12 p.m. UTC | #1
On Sun, 23 Jun 2019 at 17:14, Phong Tran <tranmanphong@gmail.com> wrote:
>
> [arch/arm/mach-exynos/suspend.c:288]: (error) Shifting signed 32-bit
> value by 31 bits is undefined behaviour
>
> Signed-off-by: Phong Tran <tranmanphong@gmail.com>
> ---
>  arch/arm/mach-exynos/suspend.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Let's switch to BIT macro. It will solve the problem and is preferred
way of coding.

Best regards,
Krzysztof
diff mbox series

Patch

diff --git a/arch/arm/mach-exynos/suspend.c b/arch/arm/mach-exynos/suspend.c
index be122af0de8f..8b93d130f79c 100644
--- a/arch/arm/mach-exynos/suspend.c
+++ b/arch/arm/mach-exynos/suspend.c
@@ -285,7 +285,7 @@  static void exynos_pm_set_wakeup_mask(void)
 	 * Set wake-up mask registers
 	 * EXYNOS_EINT_WAKEUP_MASK is set by pinctrl driver in late suspend.
 	 */
-	pmu_raw_writel(exynos_irqwake_intmask & ~(1 << 31), S5P_WAKEUP_MASK);
+	pmu_raw_writel(exynos_irqwake_intmask & ~(1U << 31), S5P_WAKEUP_MASK);
 }
 
 static void exynos_pm_enter_sleep_mode(void)