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 __maybe_unused added.
Reported-by: Hulk Robot <hul...@huawei.com>
Signed-off-by: Xu Yihang <xuyih...@huawei.com>
---
arch/x86/hyperv/hv_apic.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/x86/hyperv/hv_apic.c b/arch/x86/hyperv/hv_apic.c
index 284e73661a18..c0b0a5774f31 100644
--- a/arch/x86/hyperv/hv_apic.c
+++ b/arch/x86/hyperv/hv_apic.c
@@ -55,7 +55,8 @@ static void hv_apic_icr_write(u32 low, u32 id)
static u32 hv_apic_read(u32 reg)
{
- u32 reg_val, hi;
+ u32 hi __maybe_unused;
+ u32 reg_val;
switch (reg) {
case APIC_EOI:
--
2.17.1
