[arch/arm/mach-vexpress/spc.c:366]: (error) Shifting signed 32-bit value by 31 bits is undefined behaviour Signed-off-by: Phong Tran <tranmanphong@xxxxxxxxx> --- arch/arm/mach-vexpress/spc.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/arch/arm/mach-vexpress/spc.c b/arch/arm/mach-vexpress/spc.c index 0f5381d13494..f8911dae776c 100644 --- a/arch/arm/mach-vexpress/spc.c +++ b/arch/arm/mach-vexpress/spc.c @@ -57,8 +57,8 @@ /* SPC CPU/cluster reset statue */ #define STANDBYWFI_STAT 0x3c -#define STANDBYWFI_STAT_A15_CPU_MASK(cpu) (1 << (cpu)) -#define STANDBYWFI_STAT_A7_CPU_MASK(cpu) (1 << (3 + (cpu))) +#define STANDBYWFI_STAT_A15_CPU_MASK(cpu) (1U << (cpu)) +#define STANDBYWFI_STAT_A7_CPU_MASK(cpu) (1U << (3 + (cpu))) /* SPC system config interface registers */ #define SYSCFG_WDATA 0x70 @@ -69,7 +69,7 @@ #define A7_PERFVAL_BASE 0xC30 /* Config interface control bits */ -#define SYSCFG_START (1 << 31) +#define SYSCFG_START (1U << 31) #define SYSCFG_SCC (6 << 20) #define SYSCFG_STAT (14 << 20) @@ -90,8 +90,8 @@ #define CA15_DVFS 0 #define CA7_DVFS 1 #define SPC_SYS_CFG 2 -#define STAT_COMPLETE(type) ((1 << 0) << (type << 2)) -#define STAT_ERR(type) ((1 << 1) << (type << 2)) +#define STAT_COMPLETE(type) ((1U << 0) << (type << 2)) +#define STAT_ERR(type) ((1U << 1) << (type << 2)) #define RESPONSE_MASK(type) (STAT_COMPLETE(type) | STAT_ERR(type)) struct ve_spc_opp { @@ -162,7 +162,7 @@ void ve_spc_cpu_wakeup_irq(u32 cluster, u32 cpu, bool set) if (cluster >= MAX_CLUSTERS) return; - mask = 1 << cpu; + mask = 1U << cpu; if (!cluster_is_a15(cluster)) mask <<= 4; -- 2.11.0