[PATCH 1/1] x86/hyper-v: Fix 'set but not used' warnings

* [PATCH 1/1] x86/hyper-v: Fix 'set but not used' warnings
@ 2018-12-22  0:06 Michael Kelley
  2018-12-24  3:14 ` Sasha Levin
  0 siblings, 1 reply; 2+ messages in thread
From: Michael Kelley @ 2018-12-22  0:06 UTC (permalink / raw)
  To: sashal, gregkh, linux-kernel, devel, olaf, apw, vkuznets,
	jasowang, marcelo.cerri, Stephen Hemminger, KY Srinivasan
  Cc: Michael Kelley

In these two cases, a value returned by rdmsr() or rdmsrl()
is ignored. Indicate that ignoring the value is intentional, so
that with the W=1 compilation option no warning is generated.

Signed-off-by: Michael Kelley <mikelley@microsoft.com>
---
 arch/x86/hyperv/hv_apic.c     | 2 +-
 arch/x86/hyperv/hv_spinlock.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/hyperv/hv_apic.c b/arch/x86/hyperv/hv_apic.c
index 8eb6fbee..66a0f53 100644
--- a/arch/x86/hyperv/hv_apic.c
+++ b/arch/x86/hyperv/hv_apic.c
@@ -55,7 +55,7 @@ static void hv_apic_icr_write(u32 low, u32 id)
 
 static u32 hv_apic_read(u32 reg)
 {
-	u32 reg_val, hi;
+	u32 reg_val, __maybe_unused hi;
 
 	switch (reg) {
 	case APIC_EOI:
diff --git a/arch/x86/hyperv/hv_spinlock.c b/arch/x86/hyperv/hv_spinlock.c
index a861b04..e18c63d5 100644
--- a/arch/x86/hyperv/hv_spinlock.c
+++ b/arch/x86/hyperv/hv_spinlock.c
@@ -25,7 +25,7 @@ static void hv_qlock_kick(int cpu)
 
 static void hv_qlock_wait(u8 *byte, u8 val)
 {
-	unsigned long msr_val;
+	unsigned long __maybe_unused msr_val;
 	unsigned long flags;
 
 	if (in_nmi())
-- 
1.8.3.1


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