linux-kernel - [PATCH 4.4 110/193] Drivers: hv: vmbus: fix build warning

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Date:   Fri, 23 Feb 2018 19:25:43 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Sudip Mukherjee <sudip@...torindia.org>
Subject: [PATCH 4.4 110/193] Drivers: hv: vmbus: fix build warning

4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Sudip Mukherjee <sudipm.mukherjee@...il.com>

commit 9220e39b5c900c67ddcb517d52fe52d90fb5e3c8 upstream.

We were getting build warning about unused variable "tsc_msr" and
"va_tsc" while building for i386 allmodconfig.

Signed-off-by: Sudip Mukherjee <sudip@...torindia.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/hv/hv.c |    5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

--- a/drivers/hv/hv.c
+++ b/drivers/hv/hv.c
@@ -195,9 +195,7 @@ int hv_init(void)
 {
 	int max_leaf;
 	union hv_x64_msr_hypercall_contents hypercall_msr;
-	union hv_x64_msr_hypercall_contents tsc_msr;
 	void *virtaddr = NULL;
-	void *va_tsc = NULL;
 
 	memset(hv_context.synic_event_page, 0, sizeof(void *) * NR_CPUS);
 	memset(hv_context.synic_message_page, 0,
@@ -243,6 +241,9 @@ int hv_init(void)
 
 #ifdef CONFIG_X86_64
 	if (ms_hyperv.features & HV_X64_MSR_REFERENCE_TSC_AVAILABLE) {
+		union hv_x64_msr_hypercall_contents tsc_msr;
+		void *va_tsc;
+
 		va_tsc = __vmalloc(PAGE_SIZE, GFP_KERNEL, PAGE_KERNEL);
 		if (!va_tsc)
 			goto cleanup;