Fixes the following W=1 kernel build warning(s):
arch/x86/hyperv/hv_apic.c:58:15: warning: variable ‘hi’ set but not used [-Wunused-but-set-variable]
Compiled with CONFIG_HYPERV enabled:
make allmodconfig ARCH=x86_64 CROSS_COMPILE=x86_64-linux-gnu-
make W=1 arch/x86/hyperv/hv_apic.o ARCH=x86_64 CROSS_COMPILE=x86_64-linux-gnu-
HV_X64_MSR_EOI stores on bit 31:0 and HV_X64_MSR_TPR stores in bit 7:0, which means higher
32 bits are not really used, therefore potentially cast to void in order to silent this warning.
Reported-by: Hulk Robot <hulkci@xxxxxxxxxx>
Signed-off-by: Xu Yihang <xuyihang@xxxxxxxxxx>
---
arch/x86/hyperv/hv_apic.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/x86/hyperv/hv_apic.c b/arch/x86/hyperv/hv_apic.c
index 284e73661a18..a8b639498033 100644
--- a/arch/x86/hyperv/hv_apic.c
+++ b/arch/x86/hyperv/hv_apic.c
@@ -60,9 +60,11 @@ static u32 hv_apic_read(u32 reg)
switch (reg) {
case APIC_EOI:
rdmsr(HV_X64_MSR_EOI, reg_val, hi);
+ (void) hi;
return reg_val;
case APIC_TASKPRI:
rdmsr(HV_X64_MSR_TPR, reg_val, hi);
+ (void) hi;
return reg_val;
default:
--
2.17.1
