[PATCH 1/1] xen: asm/io.h should not include xen.h if XEN is disabled

[Dmitry Kasatkin]

kernel-devel package with kernel headers have no <include/xen> directory
if XEN is disabled. Modules which inclide asm/io.h won't compile.

XEN related content is behind the CONFIG_XEN flag in the io.h.
And <xen/xen.h> should be also behind CONFIG_XEN flag.

Signed-off-by: Dmitry Kasatkin <dmitry.kasatkin@xxxxxxxxx>
---
 arch/x86/include/asm/io.h |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/arch/x86/include/asm/io.h b/arch/x86/include/asm/io.h
index 0722730..ef26712 100644
--- a/arch/x86/include/asm/io.h
+++ b/arch/x86/include/asm/io.h
@@ -41,7 +41,9 @@
 #include <asm-generic/int-ll64.h>
 #include <asm/page.h>
 
+#ifdef CONFIG_XEN
 #include <xen/xen.h>
+#endif
 
 #define build_mmio_read(name, size, type, reg, barrier) \
 static inline type name(const volatile void __iomem *addr) \
-- 
1.7.4.1

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