[PATCH 2/6] x86/hyperv: Fix warnings for missing export.h header inclusion

[Naman Jain <namjain@linux.microsoft.com>]

Fix below warning in Hyper-V drivers that comes when kernel is compiled
with W=1 option. Include export.h in driver files to fix it.
* warning: EXPORT_SYMBOL() is used, but #include <linux/export.h>
is missing

Signed-off-by: Naman Jain <namjain@linux.microsoft.com>
---
 arch/x86/hyperv/hv_init.c   | 1 +
 arch/x86/hyperv/irqdomain.c | 1 +
 arch/x86/hyperv/ivm.c       | 1 +
 arch/x86/hyperv/nested.c    | 1 +
 4 files changed, 4 insertions(+)

diff --git a/arch/x86/hyperv/hv_init.c b/arch/x86/hyperv/hv_init.c
index 3d1d3547095a..afdbda2dd7b7 100644
--- a/arch/x86/hyperv/hv_init.c
+++ b/arch/x86/hyperv/hv_init.c
@@ -34,6 +34,7 @@
 #include <linux/syscore_ops.h>
 #include <clocksource/hyperv_timer.h>
 #include <linux/highmem.h>
+#include <linux/export.h>
 
 void *hv_hypercall_pg;
 EXPORT_SYMBOL_GPL(hv_hypercall_pg);
diff --git a/arch/x86/hyperv/irqdomain.c b/arch/x86/hyperv/irqdomain.c
index 31f0d29cbc5e..f7627bc8fe49 100644
--- a/arch/x86/hyperv/irqdomain.c
+++ b/arch/x86/hyperv/irqdomain.c
@@ -10,6 +10,7 @@
 
 #include <linux/pci.h>
 #include <linux/irq.h>
+#include <linux/export.h>
 #include <asm/mshyperv.h>
 
 static int hv_map_interrupt(union hv_device_id device_id, bool level,
diff --git a/arch/x86/hyperv/ivm.c b/arch/x86/hyperv/ivm.c
index e93a2f488ff7..ade6c665c97e 100644
--- a/arch/x86/hyperv/ivm.c
+++ b/arch/x86/hyperv/ivm.c
@@ -10,6 +10,7 @@
 #include <linux/types.h>
 #include <linux/slab.h>
 #include <linux/cpu.h>
+#include <linux/export.h>
 #include <asm/svm.h>
 #include <asm/sev.h>
 #include <asm/io.h>
diff --git a/arch/x86/hyperv/nested.c b/arch/x86/hyperv/nested.c
index 1083dc8646f9..8ccbb7c4fc27 100644
--- a/arch/x86/hyperv/nested.c
+++ b/arch/x86/hyperv/nested.c
@@ -11,6 +11,7 @@
 
 
 #include <linux/types.h>
+#include <linux/export.h>
 #include <hyperv/hvhdk.h>
 #include <asm/mshyperv.h>
 #include <asm/tlbflush.h>
-- 
2.34.1