[PATCH 4/5] xen, x86/headers: Add <linux/device.h> dependency to <asm/xen/page.h>

[Ingo Molnar]

The following patch (not upstream yet):

  "x86/boot/e820: Remove spurious asm/e820/api.h inclusions"

Removed the (spurious) <asm/e820.h> include line from <asm/pgtable.h> to
reduce header file dependencies - but a Xen header has (unintentionally)
learned to rely on the indirect inclusion of <linux/device.h>.

This resulted in the following (harmless) build warning:

   arch/x86/include/asm/xen/page.h:302:7: warning: 'struct device' declared inside parameter list

Include <linux/device.h> explicitly.

No change in functionality.

Reported-by: kbuild test robot <fengguang.wu@xxxxxxxxx>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
Cc: <stefano.stabellini@xxxxxxxxxxxxx>
Cc: Juergen Gross <jgross@xxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: linux-kernel@xxxxxxxxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
 arch/x86/include/asm/xen/page.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/x86/include/asm/xen/page.h b/arch/x86/include/asm/xen/page.h
index 33cbd3db97b9..64c5e745ebad 100644
--- a/arch/x86/include/asm/xen/page.h
+++ b/arch/x86/include/asm/xen/page.h
@@ -6,6 +6,7 @@
 #include <linux/spinlock.h>
 #include <linux/pfn.h>
 #include <linux/mm.h>
+#include <linux/device.h>
 
 #include <linux/uaccess.h>
 #include <asm/page.h>
-- 
2.7.4