[PATCH] zcache/debug: compiler failure on PPC64.

[Konrad Rzeszutek Wilk]

On PPC64 we get this:
In file included from drivers/staging/zcache/debug.c:2:
drivers/staging/zcache/debug.h: In function 'dec_zcache_obj_count':
drivers/staging/zcache/debug.h:16: error: implicit declaration of function 'BUG_ON'

This simple patch adds the appropiate header file to finish
the compile.

Reported-by: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
---
 drivers/staging/zcache/debug.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/staging/zcache/debug.h b/drivers/staging/zcache/debug.h
index eef67db..0d9c6b4 100644
--- a/drivers/staging/zcache/debug.h
+++ b/drivers/staging/zcache/debug.h
@@ -1,5 +1,6 @@
 #ifdef CONFIG_ZCACHE_DEBUG
 
+#include <linux/bug.h>
 /* we try to keep these statistics SMP-consistent */
 static ssize_t zcache_obj_count;
 static atomic_t zcache_obj_atomic = ATOMIC_INIT(0);
-- 
1.8.0.2

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