From 1b60280834683dddf4975bbf9662a74f123ba770 Mon Sep 17 00:00:00 2001 From: Xu Yihang Date: Tue, 23 Mar 2021 10:50:13 +0800 Subject: x86/hyperv: Fix unused variable 'hi' warning in hv_apic_read MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 occupies bit 31:0 and HV_X64_MSR_TPR occupies bit 7:0, which means the higher 32 bits are not really used. Cast the variable hi to void to silence this warning. Reported-by: Hulk Robot Signed-off-by: Xu Yihang Link: https://lore.kernel.org/r/20210323025013.191533-1-xuyihang@huawei.com Signed-off-by: Wei Liu --- arch/x86/hyperv/hv_apic.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'arch/x86/hyperv') diff --git a/arch/x86/hyperv/hv_apic.c b/arch/x86/hyperv/hv_apic.c index 284e73661a18..082a04279f91 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: -- cgit v1.2.3